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Running head: GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 1
Graphic Development of Children with Learning Disabilities: A Systematic Literature Review
Heather Glenn Hayes, BA
Professional Contribution Submitted in Partial
Fulfillment of the Requirement
for the Master of Arts Degree
Department of Art Therapy
in the Graduate School
Saint Mary-of-the-Woods College
Saint Mary-of-the-Woods, Indiana
February 2015
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 2
Abstract
Art therapists and related mental health fields have long been operating under the assumption
that graphic development and the mental development of children are linked (Malchiodi, 1998).
To date, most of the research done in art therapy, psychology, and related fields was not
specifically designed to establish a correlation between the graphic development and learning
disabilities, but focuses on related ideas such as intelligence. This systematic literature review
analyzes the existing research in order to synthesize related findings to create a comprehensive
picture of the current state of knowledge in the area of graphic development and learning
disabilities. Recommendations for further study are given.
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Table of Contents
ABSTRACT .............................................................................................................................. 2
LIST OF FIGURES .................................................................................................................. 5
LIST OF TABLES .................................................................................................................... 6
I. INTRODUCTION ................................................................................................................. 7 Explanation and Purpose of Comprehensive Literature Review .................................. 8 Basic Assumptions ........................................................................................................ 8
Hypothesis..................................................................................................................... 8 Definitions..................................................................................................................... 9
Limitations .................................................................................................................. 10 Merits of the Systematic Review ................................................................................ 10
II. LITERATURE REVIEW ................................................................................................... 12 Intelligence and Specific Learning Disability ............................................................. 12 Graphic Development ................................................................................................. 17
Models of graphic development...................................................................... 17 Influences on graphic development. ............................................................... 20
Cognitive processes used in graphic development. ........................................ 21 Assessments of Graphic Development ....................................................................... 22
Human figure drawings................................................................................... 22
Goodenough Draw-A-Man. ............................................................................ 23
Goodenough-Harris Drawing Test. ................................................................. 24 House-Tree-Person (HTP). ............................................................................. 25 Koppitz Developmental Items. ....................................................................... 25
Naglieri Draw a Person. .................................................................................. 26 Draw-A-Person Intellectual Ability Test for Children, Adolescents, and Adults.
......................................................................................................................... 27 Problems with human figure drawing assessments. ....................................... 28
Other Art-based Cognition Tests ................................................................................ 30 Bender-Gestalt Test. ....................................................................................... 30 Silver Drawing Test of Cognition and Emotion. ............................................ 31 Clock Drawing Test. ....................................................................................... 32 Controlled Drawing Observation. ................................................................... 33
III. METHODOLOGY/PROCEDURES ................................................................................ 35 Search ......................................................................................................................... 35
Screening..................................................................................................................... 36 Data Analysis .............................................................................................................. 36
IV. RESULTS ......................................................................................................................... 39
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 4
V. CONCLUSIONS, DISCUSSION, AND RECOMMENDATIONS .................................. 41
Conclusions and Discussion ....................................................................................... 41 Recommendations ....................................................................................................... 41
REFERENCES ....................................................................................................................... 43
BIBLIOGRAPHY ................................................................................................................... 55
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 5
List of Figures
Figure 1. Organization of Cattell–Horn–Carroll model, with examples ..................................... 14
Figure 2. Lowenfeld’s model of graphic development ................................................................ 18
Figure 3. Publication Dates .......................................................................................................... 37
Figure 4. Types of Resources....................................................................................................... 38
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List of Tables
Table 1. Databases searched ........................................................................................................ 35
Table 2. Search Terms ................................................................................................................. 36
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 7
CHAPTER I
Introduction
Drawings created by children have been the subject of much study and research. Since
the late 1800’s, drawings made by children have been examined and analyzed for various
reasons (Malchiodi, 1998). Based on these studies of children’s drawings, researchers have
created models and theories of stages of graphic development of children. These theories state
that children generally follow a predictable pattern of graphic development, with stages in
drawing roughly coinciding with stages of development in social and cognitive skills.
Lowenfeld (1947) noted that graphic development and cognitive development are linked, and
children with delayed graphic development may have corresponding impairment of intellectual
development. Some researchers have tried to develop ways to use the children’s drawings as a
way to assess their level of intelligence, notably Goodenough (1931), Koppitz (1967), and Silver
(2007).
In psychology and art therapy, there is a general assumption that graphic development of
a child corresponds to cognitive development and intelligence (Kaplan, 2003; Lowenfeld, 1947;
Malchiodi, 1998). If a client has significant delays in development compared to peers, it is seen
as a sign that a specific learning disorder (SLD) and/or lower cognitive functioning may be an
issue. The alternate is assumed to be true as well, i.e. that advanced graphic development is a
sign of intelligence. While many researchers have studied the drawings of children with learning
disorders for various reasons, to date very little research has been conducted that specifically
establishes the relationship between graphic development and SLD.
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Explanation and Purpose of Comprehensive Literature Review
This comprehensive literature review analyzes the existing research in related areas in
order to synthesize findings and create a comprehensive view of the current state of knowledge
in the areas of graphic development and specific learning disorders. Articles from the fields of
art therapy, psychology, art education, and other related fields were reviewed for the information
about to graphic development and its correlation with SLD. Gaps in knowledge and suggestions
for future research are identified and explained.
Basic Assumptions
Graphic development of children follows a relatively predictable pattern, and children of
similar age and cognitive ability have similar graphic development (Lowenfeld, 1947;
Malchiodi, 1998; Rubin, 1984). Despite the lack of research studies specifically designed to
examine the correlation between SLD and graphic development, researchers of children’s
drawings have noted a connection between cognitive development and the rate of graphic
development (Lowenfeld, 1947).
Research in areas related to art therapy, such as psychology and art education, can inform
the scope of knowledge and practice of art therapy. Discoveries in one field may be applicable
to other disciplines.
Hypothesis
This comprehensive literature review examined related information across professional
disciplines in order to discover if there is a reported relationship between graphic development
and learning disorders.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 9
Definitions
Art-Based Psychological instruments are “tests that involve the use of imagery” in
order to assess a person’s level of functioning (Hagood, 2002, p. 63).
Bender-Gestalt Test is a drawing-based test developed by Bender in 1938 to assess
visual-motor acuity, which is associated with intelligence (Brannigan & Decker, 2006). The test
consists of a series of drawings of geometric figures that the examinee is directed to copy.
Clock Drawing Test is a test that has traditionally been used with adults to assess
cognitive deficits (Eden, Wood, & Stein, 2003). Examinees are directed to draw the face of a
traditional analog clock.
Graphic development refers to the process by which a child learns to draw, consisting of
several stages that correspond to age and general development.
House-Tree-Person is a drawing assessment developed by Buck (1948) where the
examinee is directed to draw a person, house, and then a tree on separate papers. Clinicians use
it to assess “personality integration, cognitive maturity, and interpersonal connectedness” (Oster
& Crone, 2004, p. 92).
Human Figure Drawings (HFD) refer to any of several drawing tests that use drawings
of a person to assess the psychological function of a client. Well-known HFD scoring tests
include the Goodenough-Harris Drawing Test (GHDT) (Harris, 1963), the Naglieri (1988)
Draw-A-Person: Quantitative Scoring System (DAP: QSS), and the Koppitz Developmental
Items (Koppitz, 1968).
Intelligence quotient (IQ) tests are standardized tests that measure a person’s
intellectual ability as compared to the established norms. Examples of these tests include the
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 10
Stanford-Binet Intelligence Scale (SB), the Wechsler Adult Intelligence Scale (WAIS), and
the Wechsler Intelligence Scale for Children (WISC). These tests include measurements of
ability in many areas including knowledge, memory, visual-spatial processing, and reasoning
(Baron, 2005; Mleko & Burns, 2005).
Specific learning disorder (SLD), formerly known as a learning disability, is diagnosed
when:
current academic skills [of a child are] well below the average range of scores in
culturally and linguistically appropriate tests of reading, writing, or mathematics. The
individual’s difficulties must not be better explained by developmental, neurological,
sensory (vision or hearing), or motor disorders and must significantly interfere with
academic achievement, occupational performance, or activities of daily living. (American
Psychiatric Association, 2013, p. 1)
Limitations
Because there are not many studies, to date, that are specifically designed to assess the
correlation of SLD and graphic development, the literature reviewed in this analysis will be
selected from studies designed to explore a related research question. The information,
therefore, may not be fully applicable to the relationship between SLD and graphic development.
Only findings that are applicable to the topic of graphic development and SLD are discussed.
Merits of the Systematic Review
The National Center for Learning Disabilities (2014) recommends intervention as early
as possible in a child’s life in order to maximize the benefits. It is often difficult to assess
whether a child is learning disabled until they have been in school and are not meeting academic
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goals. If a correlation exists between graphic development and learning disabilities, analysis of
drawings could be used as an additional tool in the early identification of children with learning
disabilities. Understanding the current state of knowledge about this topic will help inform
future research and aid in early detection and intervention.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 12
CHAPTER II
Literature Review
This literature review covers a series of topics that must be discussed individually before
they can be woven into a cohesive fabric. These topics include current theories of intelligence,
models of graphic development, and art assessments. Once these areas were examined
separately, the connections between them can be established.
Intelligence and Specific Learning Disability
Theories about the nature of intelligence have been debated for thousands of years, and a
full review or comparison of these theories is beyond the scope of this paper. One of the issues
with theories of intelligence is the difficulty both in defining and in measuring it. Attempts to
measure intelligence objectively and quantifiably did not begin until the late 1800’s (Kaufman,
Kaufman, & Plucker, 2013). Several assessments, commonly referred to as IQ tests, have been
developed and standardized. Two of the most commonly used are the Stanford-Binet (SB) and
the Wechsler Adult Intelligence Scales (WAIS) tests. These tests correlate significantly to each
other, and substantially predict both academic achievement and job performance. IQ tests cover
a specific set of abilities and skills, and are not comprehensive for every aspect of intelligence.
The main skills assessed by IQ tests are comprehension-knowledge, fluid reasoning, visual
processing, auditory processing, long-term memory retrieval, short-term memory, and processing
speed (Niileksela & Reynolds, 2014).
This new ability to objectively measure aspects of intelligence and predict academic
achievement eventually led to the conceptualization of learning disabilities. Educators and
clinicians began to take note of many instances where the measured IQ of a person did not
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correspond to that person’s academic achievements, and nothing else could account for the
discrepancy, such as a psychopathology or medical issues (Courtad & Bakken, 2011). These
cases lead researchers to try to find an explanation.
The concept of learning disabilities as the explanation of the discrepancy is rather recent.
The term itself was not in use before 1963; before then it went by a variety of different names,
such as organic brain damage, minimal brain dysfunction, slow learner, educational handicap,
and primary reading retardation (Courtad & Bakken, 2011). Before the 1960’s and 70’s,
educators and clinicians often categorized these children as “mentally retarded” and approached
their education in the same way as children with global developmental delays or low
intelligence. Advances in research led to the theory that specific cognitive processes could be
deficient while the person’s overall general intelligence (known as g) remains intact. It has been
difficult, however, “to investigate the role of general versus specific abilities in both basic
research and practice” (Niileksela & Reynolds, 2014, p. 224). This is changing as both brain-
based research and theoretical understanding of the issue evolves.
A new conceptualization of intelligence, known as the Cattell–Horn–Carroll (CHC)
theory, is the model that best explains current understanding of learning disabilities.
CHC theory serves as a taxonomy of human cognitive abilities. CHC theory is a
multifactor, hierarchical model of intelligence, in which over 60 narrow abilities are
subsumed under approximately 10 broad abilities, and the broad abilities are subsumed
under g (Niileksela & Reynolds, 2014, p. 225).
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 14
General Intelligence/
Ability (g)
comprehension - knowledge
(gc)
word definitions
verbal similarities
fluid reasoning (gf)
matrices
sequential & quantitative reasoning
visual processing
(gv)
pattern construction
recall of designs
auditory processing
(ga)
Speech sound discrimination
memory for sound patterns
long-term retrieval (glr)
naming of objects
associative memory
Short-term memory (gsm)
recall of digits
recall of sequential
order
processing speed (gs)
rapid naming
speed of information processing
Figure 1. Organization of Cattell–Horn–Carroll model, with examples of abilities (Niileksela &
Reynolds, 2014)
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 15
CHC theory has influenced major IQ test designs, such as the SB and the WAIS, and
newer versions have a similar structure in the subtests, with specific abilities assessed and then
organized under broader categories (Baron, 2005; Mleko & Burns, 2005). McGrew (2009)
recommended using this model as a common nomenclature for future investigations into exactly
which broad and narrow ability deficiencies account for SLD. If specific cognitive deficits
correlate to deficits in specific achievement areas, this would be a way to distinguish between
SLD and general underachievement. Niileksela & Reynolds (2014) took up this challenge and
found that deficiencies in certain narrow abilities are correlated with the academic
underachievement in students diagnosed with SLD.
The CHC model of intelligence is useful in the study of how the drawing process relates
to general intelligence and academic achievement. Several researchers, while not using the
specific model and nomenclature of the CHC model of intelligence, describe how the activities
of reading, writing, and drawing use the many of the same narrow abilities/processes (Bottrell,
2011; Del Giudice, et al., 2000; Mati-Zissi & Zafiropoulou, 2001). This research is a more
finely detailed branch of the general theory that graphic development mirrors cognitive
development in children.
Gardner (1983) argued that the approach to defining and measuring intelligence as a
singular item was too limited, and focused on a narrow aspect of human cognition. He argued
that people have abilities and intelligence in areas not included or measured by standard IQ tests.
This theory, known as multiple intelligences (MI), proposed seven different areas of intelligence
that each person possesses to some degree.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 16
Linguistic intelligence (LI) is the capacity to use words effectively, either orally or in
writing. Logical-mathematical intelligence (LMI) is the capacity to use numbers
effectively and to reason well. Spatial intelligence (SI) is the ability to perceive the
visual-spatial world accurately and to interpret these perceptions. Bodily-kinesthetic
intelligence (KI) involves expertise in using one’s body to express ideas and feelings.
Musical intelligence (MI) is the capacity to perceive, discriminate, and express musical
forms. Interpersonal intelligence (INPI) is the ability to perceive, and make distinctions
in, the moods, intentions, motivations, and feelings of other people. Intrapersonal
intelligence (INTI) is self-knowledge and the ability to act adaptively on the basis of that
knowledge. Naturalist intelligence (NI) is expertise in the recognition and classification
of the numerous species – the flora and fauna – of a person’s environment. (Ekinci, 2014,
p. 626)
Traditional IQ tests focus narrowly on two of these intelligences, LI and LMI, to predict a
child’s intelligence and ability in school. Gardner (1983) felt that these two intelligences were
only part of the picture, and that even if children had difficulties in those two areas, it did not
mean they were without abilities and gifts. He proposed that these children had different
learning styles, and the instruction and tasks in the school setting did not provide them with
opportunities to use their strengths.
Recent research has validated this strengths-based conceptualization of intelligence. A
different perspective of SLD has emerged – one that changes the focus from cognitive or
neurological deficit focus to a different learning style approach (Tafti, Heidarzadeh, & Khademi,
2014). Children with SLD have differences in MI profiles than children without SLD, and often
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 17
have strengths in other areas of MI (Hearne & Stone, 1995). In research with a small population
of students, Tafti et al. (2014) found that children with SLD were more likely to have
weaknesses in LI and LMI, but be much stronger in SI than their peers without SLD. Tafti
(2014) argued that since weaknesses in LI are often associated with strengths in SI, traditional
intelligence testing and instructional methods are problematic for children with this MI profile.
Traditional approaches and measurements do not give an accurate representation of these
children’s abilities.
In some situations, it is not always feasible or appropriate to administer a standard IQ
assessment, such as when the subject is autistic, non-verbal, bilingual or non-English speaking,
developmentally delayed, non-reading, or too hyperactive for the lengthy test (Abell, Von
Briesen, & Watz, 1996). Other circumstances include when a large number of people need to be
assessed (Berdie, 1945). In these cases, art-based assessments can be used for evaluation. In
addition, standard IQ tests measure a rather narrow portion of general intelligence, and an art-
based assessment can assist in providing a more complete understanding of cognitive functioning
(Naglieri, 1993). Art-based assessment may also give a better picture of the cognitive
functioning of children with weakness in LI/LMI, but strengths in other intelligences.
Graphic Development
Models of graphic development. Drawings created by children have been the subject of
much study and research. Since the late 1800’s, drawings made by children have been examined
and analyzed for various reasons (Goodenough, 1931; Malchiodi, 1998; Uhlin, 1979). These
researchers have created similar models and theories of stages of graphic development of
children, linking them to theories of child psychosocial development (Uhlin, 1979). Most of the
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 18
models of graphic development have proposed a sequential series of predictable stages that are
driven by a set of “innate factors or rules” (Wilson & Wilson, 1982, p. 2). Lowenfeld and
Brittain’s (1947) model of graphic development is probably the most well known and accepted in
the United States.
Figure 2. Lowenfeld’s model of graphic development (Lowenfeld, 1947)
In the this model, children begin in the Scribble stage in which they draw scribbles that
become increasingly complex as the child masters the fine motor skills associated with using a
drawing instrument (Lowenfeld, 1947). Once the child has some basic mastery of motor skills,
they gradually begin differentiating figures in the Preschematic stage. Eventually, the child
develops a pattern, or schema, for drawing and transitions into the Schematic stage. Drawings in
this stage are stylistic, with the same pattern employed repeatedly to draw the same object. The
drawings in this stage represent the child’s concept more than visual perception. After the
Schematic stage is the Realistic stage, where the child begins to include more detail and
differentiation in attempts to make the drawing more realistic. In the Naturalistic stage, the child
is beginning to develop the capacity for abstract thinking. Drawings become both more realistic,
Scribble stage (2-4 years)
Pre-schematic stage (4-7 years)
Schematic stage (7-9 years)
Realistic stage (9-11 years)
Naturalistic stage (12-14 years)
Adolescent stage (14-17 years)
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 19
and more expressive of mood. At the Adolescent stage, art becomes a means of emotional
expression and symbolic thought. Many art-based assessments use this sequential model of
graphic development as the basis for the scoring and evaluation of the drawings (Hinz, 2011)
Some of the assumptions behind the sequential models of graphic development have been
called into question by other researchers. Wolf and Perry (1988) questioned whether the
scribbles made by young children are as random as they appear to adults, since observation of
children’s play proves that they are capable of symbolic thought. Other researchers have
criticized sequential models of graphic development as being too idealistic, or too restrictive in
their view of aesthetics (Bradley, 1986; Duncum, 1999; Wilson & Wilson, 1982; Wolf & Perry,
1988).
One alternative to the sequential models of graphic development is the Multiple
Pathway/Multiple Endpoint (MPME) model proposed by Duncum (1999). The basic premise of
this model of graphic development is that there is no singular path that all children follow in their
artistic development. The MPME model attempts to address assumptions made by the sequential
models that fail to live up to the reality of many children’s development. For example, Duncum
explained that the intent and interest of the child plays a part in the development of that child’s
drawing abilities. Children who are more interested in the storytelling aspect of drawing will
focus on different elements than a child who is interested in realism. Wolf and Perry (1988) also
argued that a child’s purpose would affect the drawing style and schema used. The MPME
model also accounts for children who, for various reasons, develop interest in art later than their
peers. The MPME model contextualizes the child’s graphic development to his or her personal
circumstances.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 20
Influences on graphic development. Wilson and Wilson (1982) proposed a
conceptualization of graphic development as an interplay of innate factors and influence factors.
Innate factors are the general guidelines or “rules” that drawings must follow, for example,
figures need to be perpendicular to the baseline. Influence factors are things that result in the
child adjusting or overriding this rule in a given drawing. Examples of influence factors can be
direct observation, other graphic representations, personal interests, cultural norms, or ability.
Cultural influences are especially important, as the schema children use are influenced greatly by
drawings they have seen from other children (Wilson, 2003). Culture may also affect the rate of
a child’s graphic development (Brown I., 1992). “The interaction between [innate and influence
factors] occurs as a cognitive operation. In other words, graphic configurations are behavioral
manifestations of cognitive operations” (Wilson & Wilson, 1982, p. 13). This different
conceptualization of graphic development helps explain some of the more troublesome aspects of
more sequential models, such as why a drawing could contain examples from multiple stages of
graphic development. Viewing drawings as a manifestation of cognitive operations also helps
explain the differences in drawings of children similar age, but different cognitive ability.
“If we are to understand graphic development it seems necessary to take a more rigorous
and careful look at the full range of factors that affect this development” (Wilson & Wilson,
1982, p. 1). Numerous other factors that can affect a child’s drawing ability in addition to
culture and personal preference. In 1907, Meumann identified several factors that could impair a
child’s graphic development: poor graphomotor coordination, cognitive ability, visual acuity,
and visual memory deficits (as cited by Goodenough, 1931). These factors easily fit into the
CHC model of intelligence as an explanation of the deficit in graphic development.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 21
Cognitive processes used in graphic development. Del Giudice, et al. (2000) studied
the development of narrow visuospatial skills closely related to drawing, and found that they
develop in a predictable pattern. By the age of three, a child has mastered the skill of visual
scanning, or tracking objects. Next to develop are visual motor skills such as tracing a line with
a finger. This is followed by visual perception, i.e. the ability to recognize length, angles, and
other characteristics. Abilities that develop more slowly, and continue to develop throughout
childhood are representation (recognizing shapes) and graphic ability (creating shapes). The
study also found that these abilities correlated very strongly with the child’s IQ.
In similar research, Bottrell (2011) explained the overlapping of the narrow cognitive
processes that are necessary for reading, writing, and drawing.
The making of graphic marks, such as line, shape and pattern discrimination, is
fundamental to drawing images and to learning the structure of graphic language. In one
context, this activity is called drawing and another context this activity is called writing,
but, the psychomotor skills for both contexts essentially remain the same. Learning to
draw develops a range a visual skills, such as figure/ground perceptions, as well as
discrimination of line, shape, direction and proportion (p. 309).
Perception of shapes and forms is a critical component of the ability to read and write. Shape
constancy is crucial for letter recognition in reading and writing, in that, “an A is an A is an A;
the letter A is perceived as an A despite differences in color, size, and texture of surface”
(Bottrell, 2011, p. 309).
With newer developments in brain imaging, researchers are beginning to be able to map
specific parts of the brain that are involved in various cognitive activities, and compare children
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 22
with SLD to those without (Shaywitz & Shaywitz, 2005; Stanescu-Cosson, et al., 2000). James
and Atwood (2009) used MRI to map the areas of the brain used in learning letters, and
discovered that the most efficient way to learn to visually process the letters was through the
sensorimotor activity of writing them. This finding validates the theorized connection of the
graphic activity to reading and visual processing. While valuable, these studies are expensive,
time consuming, and sometimes invasive, so most clinicians and educators would not frequently
use them in diagnosis of SLD (Eden et al., 2003).
Assessments of Graphic Development
In the 1920’s, researchers began studying the connection between graphic and cognitive
development of children (Di Leo, 1973). Researchers have used a variety of different means to
evaluate children’s drawings in order to assess cognitive development. Most of these art-based
tests of cognition use a linear graphic developmental model similar to Lowenfeld’s as the basis
of the assessment.
Human figure drawings. One of the most prevalent methods of art-based assessment is
an HFD. Drawing a man was chosen because of its universal quality, and because it has been
found to be a natural favorite subject among children until about age eight or ten (Goodenough,
1931). Rouma described a model of human figure drawing development in 1913 that began with
unrecognizable scribbles and gradually became more detailed and realistic (as cited by Di Leo,
1973). Partridge (1902) first tried to quantify this proposed developmental sequence by studying
the drawings of over two thousand children, and noting what age children began including
certain features. More recently, E. V. Brown (1990) compiled a list of developmental
characteristics of children’s human figure drawings, and found similar results.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 23
Interestingly, twin studies show that scores on HFD drawings have a genetic factor, and
high performance is equally as inheritable as IQ (Arden, Trzaskowski, Garfield, & Plomin,
2014). This speaks to the ability of HFD drawings to assess cognitive development in a unique
way. Environmental factors, which had some influence, did not affect HFD scores as strongly as
the genetic factor.
Goodenough Draw-A-Man. Goodenough (1926) developed the Draw-A-Man (DAM)
test as a measure of intelligence. The theory behind the DAM test was that children progressed
in their ability to draw a person in a predictable pattern similar to that of general graphic
development. Goodenough (1926) built on Partridge’s (1902) work, and devised a scale built on
age-appropriate graphic features that assigns a number score correlated to the mental age of the
child. The scale was based upon her study of approximately 5,000 children’s drawings
(Goodenough, 1931). This score is also purported to measure the intelligence of the child.
Children who produced drawings without the graphic development characteristics considered
normal for a child their age were considered to have lower intelligence than their peers. When
comparing the drawings from children in regular classes to those in special education classes,
Goodenough noted that the children in the special education classes did not perform as well.
Because the terminology for SLD was not in use at the time (Courtad & Bakken, 2011), it is
unclear whether the students Goodenough studied were learning disabled, or more likely,
developmentally delayed. Subsequent studies with the DAM test found that while a poor score
on the test did not necessarily mean the subject had a low IQ; high scores on the test were not
possible without at least average intelligence (Berdie, 1945).
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 24
Goodenough-Harris Drawing Test. Harris revised and updated the Goodenough DAM
test in 1963 (Harris, 1963). The new revisions included changing the instructions to ask the child
to draw a person, and the scoring scale was adapted to be specific to the gender drawn by the
child. The score results of this test were found to correlate with other standard IQ testing
measures, specifically the edition of the Stanford-Binet in use at the time (Di Leo, 1973). The
DAM test, now known as the Goodenough-Harris Drawing Test (GHDT) became well known
and widely used as an intelligence assessment for children (Di Leo, 1973). The GHDT has been
used internationally (Abell, Von Briesen, & Watz, 1996), although Harris (1963) stated that the
scoring scale needs to be re-normed for different cultures, especially if they have a different
lifestyle and mode of dress. Weiss’ (1981) study of children from two subcultures in Peru
support the need for re-norming the scales for different cultures, as the clothing items affected
the scores of the children.
In a review of approximately 100 studies of GHDT, Scott (1981) found the ability of the
GHDT to predict academic achievement or screen for learning disabilities is unclear, as the
research has conflicting results. The studies of the GHDT and children with SLD often have
serious weaknesses, such as the lack of a control group of children without SLD. According to
Scott, another problem with generalizing the findings of these studies is that many do not set
forth clear definitions or characteristics of the populations studied. Vague terms such as
“learning problems” or “behavior problems” make the studies difficult to recreate and validate.
Additionally, in some studies that compare GHDT to IQ tests, large age ranges are treated as a
homogenous group. This age range can be as large as ten years.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 25
House-Tree-Person (HTP). Buck (1948) took the idea of an HFD and expanded it,
adding a drawing of a house and a tree. The drawings are assessed according to details,
proportion, perspective, and concept formation (Brooke, 2004). The drawing is followed by an
interview where the subject is given the opportunity to describe their work, as well as any
associations that arise from it. Buck (1948) developed a scoring system for the assessment that
roughly approximated IQ scores. He did not publish any reliability or validity studies to support
the HTP assessment.
Relatively few studies have examined the HTP as a means of assessing IQ or academic
achievement. It was used in a study with young adults (Abell, Heiberger, & Johnson, 1994), and
with adolescents (Abell, Horkheimer, & Nguyen, 1998). In both studies, the HTP assessment
was compared to the GHDT, and the results were similar. The HTP underestimates IQ scores,
but not as significantly as the GHDT. The score of the HFD portion of the HTP assessment was
compared to the composite score, and the researchers found that the addition of the house and
tree did not increase the validity of the score.
Koppitz Developmental Items. Koppitz (1967) offered a different view on assessing
intelligence and cognitive functioning with an HFD. Koppitz, like Goodenough and Harris,
considered graphic development when developing her scoring guide (Chappell, 1994). As a
result, Koppitz dropped many of the scored items in the GHDT because of the infrequency of
their inclusion in younger children’s drawings (Abell et al., 1996). The scale has 30 items that
range from expected to exceptional for a given age and stage of graphic development (Koppitz,
1967). Koppitz’s scoring guide did not try to classify children as finely as the Goodenough-
Harris test did. In fact, this has been a criticism of the scale, since the IQ range associated with a
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 26
Koppitz score can be as much as 35 points, it make the test hard to use as anything other than a
basic screener (Abell, Von Briesen, & Watz, 1996). In a previous work, (Koppitz, Sullivan,
Blyth, & Shelton, 1959) used the HFD and the Bender Gestalt Test to assess first graders, and
predict academic achievement. The two tools, when used in conjunction, had statistically
significant accuracy in predicting achievement.
Koppitz also used HFD drawings to assess for emotional disturbance (Koppitz, 1968).
She examined the relationship between the presence of these indicators of disturbance and
academic achievement (Koppitz, 1966). Drawing features Koppitz was able to link to academic
difficulty are poor integration of parts, slanting more than fifteen degrees, omission of body,
omission of arms, and more than three figures drawn. A valid criticism of Koppitz’ scoring of
emotional indicators was that she did not publish the normative data of the emotional indicators
(Hagood, 2003). Additional studies have linked these emotional disturbances to academic
achievement and learning disabilities (Bachara, Zaba, & Raskin, 1975; Holtzman, 1993). Cox &
Catte (2000), however, cast some doubt as to whether these indicators are actually the result of
emotional disturbance. They posit that the so-called emotional indicators are, in fact, skill
deficits. Koppitz (1966) had also allowed for the fact that these indicators could be due to
cognitive factors such as mental retardation or cerebral malfunction, as they would also affect
academic achievement.
Naglieri Draw a Person. Naglieri (1988) built upon the work of Goodenough, Harris,
and Koppitz to develop an updated scoring system for HFD. This assessment, known as the
Naglieri Draw-a-Person (DAP) instructs the examinee to draw a picture of a man, woman, and a
drawing of self. The three drawings were scored separately, and then added for a composite
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 27
score. Naglieri argued that the additional drawings increased the validity of the assessment. The
scoring system is still based on a graphic development, but it is simpler, with only fourteen items
instead of the GHDT’s 71. In a comparative study, the additional items in the GHDT did not
make it more reliable than the DAP (Abell, Wood, & Liebman, 2001). Scores for the DAP have
been normed into half and quarter year intervals in order to increase its precision (Naglieri,
1988).
The DAP correlates significantly with reading and math achievement scores as measured
by the Iowa Test of Basic Skills Composite (Haddad & Juliano, 1991). It has also been
correlated to the WISC-R total scores (Wisniewski & Naglieri, 1989). Hagood (2002) compared
the DAP to other art-based psychological assessments, specifically Raven’s Coloured
Progressive Matrices and the Picture Vocabulary Tests, both of which have been correlated with
academic achievement and IQ.
Draw-A-Person Intellectual Ability Test for Children, Adolescents, and Adults. The
newest version of the draw a person test is the Draw-a-person: Test of intelligence (DAP:IQ)
developed by Reynolds and Hickman in 2004 (as cited by Williams, Fall, Eaves, & Woods-
Groves, 2006). Unlike any of the previous HFD scoring systems, this version was developed for
use with adolescents and adults. Reynolds and Hickman reported it to be a reliable and
consistent assessment, but far fewer studies have been conducted with this scoring method.
Williams et al. (2006) examined the inter and intra rater reliability of the DAS:IQ and found they
were highly correlated. Imuta, Scarf, Pharo, and Hayne (2013) analyzed scores from the
DAS:IQ and Wechsler IQ of children and adults. They found that they did correlate, but yielded
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 28
a significant number of false positive and negatives, i.e. falsely identifying children as having
high or low IQ.
Problems with human figure drawing assessments. With widespread use, clinicians
noted many instances of discrepancies between the child’s IQ as measured by other methods and
the mental age as scored by the HFD. Aikman, Belter, and Finch (1992) found that he GHDT
often underestimates IQ scores, an issue that has been found in many other studies (Abell et al.,
1994; Abell et al., 1996; Berdie, 1945). The GHDT may be most effective when used with
younger children or individuals with lower IQ scores (Abell et al., 1996). Some theorized that an
IQ score significantly higher than the score on the GHDT was a sign that the child must have
some sort of emotional disorder preventing him from creating a drawing at the expected level (Di
Leo, 1973). Others questioned the usefulness of the test, given its uneven results when compared
to other methods of measuring IQ (Motta, Little, & Tobin, 1993). Many of the studies of the
human figure drawing assessments were poorly designed, and the results may not be
generalizable to other populations (Knoff, 1993). One important way that some of these studies
were poorly designed is that they categorized children of different ages as a single homogenous
group, even when that age difference was as great as ten years (Scott, 1981).
The GHDT’s use is most appropriate when used as a part of a battery of assessments, or
when used as a gross screening with large groups to identify individuals that may need more
testing (Berdie, 1945; Koslowsky, Deren, & Sofer, 1976). Despite the criticisms, clinicians still
use human figure drawing tests because they are universal, and can help assess people that are
generally difficult to assess by other means because of issues such as nonverbal status, limited
English proficiency, etc. (Holtzman, 1993).
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 29
Kellogg (1970) rejected the Goodenough-Harris test outright, because in her view, the
basic premise of the test is flawed. Kellogg argued that the Goodenough-Harris test was based
upon a fundamental misunderstanding of the graphic development of children. Young children
do not draw from observation, and frequently omit or exaggerate items in their drawings based
for a variety of reasons, many of which are not due to a lack of intelligence. According to
Kellogg, the scoring scales used in the Goodenough-Harris test were based on what an adult’s
notion of how a child’s human figure drawing should look. This adult notion is based largely on
using external observation as the inspiration and measure of the drawing’s skill, not the inner
thought processes of the child. Goodenough and Harris did not take into consideration the
aesthetics or developmental norms of children’s drawings. This argument could also be applied
to any of the other HFD drawing tests. Kellogg also questioned the appropriateness of basing the
assessment on a single drawing, as young children are notoriously unpredictable and may not
perform their best that day simply because they did not feel like doing so.
Another reason both the Goodenough-Harris and HFD tests may not be good assessments
for the evaluation of intelligence is that they do not take cultural influence into consideration.
Harris stressed the importance of norming the scoring system for cultures that have a “distinctly
different pattern of dress, mode of living, and quality or level of academic education” (Harris,
1963, p. 133). When using the GHDT with two distinct cultures, Weiss (1981) found that
removing the scored items related to dress made the scores more reliable, but did not fully
account for cultural differences. Wilson (2003) described numerous differences that can be
found in the drawings of children from different cultures. These cultural differences resulted in
several distinct styles of drawing humans. The child’s culture also influences the richness of
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 30
graphic symbols available to the child as well as the themes they chose to depict. These cultural
influences could affect HFD and result in an inaccurate score.
Other Art-based Cognition Tests
Researchers have studied many other means of assessing cognitive functioning through
graphic production in addition to HFD assessments. These assessments differ in what they ask
the examinee to draw, but they all have some variation of a graphic development-based scoring.
Bender-Gestalt Test. Bender (1970) developed the Visual Motor Gestalt Test (VMGT),
commonly referred to as the Bender-Gestalt Test, in 1938. In this test, children copy
increasingly complex figures in order to evaluate their visual gestalt functioning. “Visual Gestalt
function is a fundamental function associated with language ability and closely associated with
various functions of intelligence such as visual perception, mental motor ability, memory,
temporal and spatial concepts and organization” (Brannigan & Decker, 2006, p. 10). Children
who had deficits in maturation, learning difficulties, or other cognitive impairments make less
sophisticated replications of the pictures (Bender, 1970). Bender found that the skills necessary
to accurately reproduce the images developed in generally the same way as the child developed
cognitively and graphically. The order of skill development:
(1) Control of circular movement… (2) Foreground-background differentiation and
organization of all figures into a pattern. (3) Horizontal orientation and
direction. (4) Verticalization. (5) Diagonal orientation. (6) Differentiation and
separation of figures and their parts. Recognition of uniqueness of each figure and
each part of a figure. Where there are learning disabilities or other evidences of
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 31
maturational lags in a child, all of these processes will show some primitiveness,
but those that mature latest will be most affected (Bender, 1970, p. 33).
Hundreds of articles have been written about the VMGT, and the test has been used in
research areas not originally conceived of by its author (Bender, 1970). Many different scoring
scales of the test have been proposed, among which is Koppitz’ scoring system. Koppitz used
the test as a means to predict academic achievement (Koppitz, 1958). Shape distortion, rotation,
substituting circles for dots, perseveration, poor integration of parts, curves substituted for
angles, and incorrect angles correlated most strongly with learning disabilities or academic
difficulty (Bender, 1970). In addition, the manner in which a child places the figures on the page
is associated with academic achievement (Ackerman, Peters, & Dykman, 1971). Haphazard
placement of objects on the page is more common in children with SLD.
The VMGT has been used in conjunction with HFD assessments in an attempt to predict
academic achievement. The results of these studies are mixed. Some, such as Koppitz et al.
(1959), Ackerman et al. (1971), Fisher (as cited by French, 2003), and Özer (2009), found that
the VMGT was able to distinguish between children with academic struggles and those without.
Others, such as French (2003) and Buckley (1978) did not find as strong of a correlation.
Silver Drawing Test of Cognition and Emotion. Silver (1983) developed a drawing
test comprised of three parts, a predictive drawing task, a drawing from observation task, and a
drawing from imagination task. This series of tasks was normed with a wide range of
populations. The scoring scales, while not specifically designed to categorize the level of
graphic development, tend to follow the sequential model of graphic development and award
higher scores to features typically found in the later stages of development. The Silver Drawing
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 32
Test (SDT) was found to correlate to several different measures of academic achievement, such
as the Gates-MacGinitie Reading Comprehension Test and the Science Research Associates
Survey of Basic Skills Ability. The SDT has been normed in several countries, with minor
differences in cross-cultural comparisons (Silver, 2003).
Moser (as cited by Silver, 2007) used the SDT as part of a research study that compared
the scores of adolescents with SLD to those without on several different ability assessments. The
Goodenough-Harris test was one of the assessments, as was the WAIS Performance IQ test. The
SDT was found to have significant correlations with both tests. In 1990, Hiscox compared
scores on the SDT and the California Achievement Test Verbal, Quantitative and Nonverbal
Batteries (CAT), and found that the SDT scores were higher than the CAT scores for children
with diagnosed learning disabilities (as cited by Silver & Carrion, 1991). Hiscox attributed this
to the nonverbal nature of the SDT.
Clock Drawing Test. Clock drawing tests (CDT) are frequently used with adults to
screen for neural dysfunction, such as Alzheimer’s or brain damage (Cohen, Ricci, Kibby, &
Edmonds, 2000). Drawing a clock is a simple task, but requires several cognitive and
graphomotor skills to be intact in order to complete it successfully. Errors that indicate cognitive
dysfunction in adults include omission, substitution or repetition of numbers, neglect, and
number rotation or reversal. Cohen et al. (2000) explored the CDT with children, in order to find
the graphic and cognitive development norms for each age. They discovered that even though
children can draw circles and write numbers at relatively young ages, the ability to draw a clock
accurately is something that develops throughout childhood as the frontal lobe develops. At six,
children have a basic concept of a clock, but make significant errors, with left side neglect and
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 33
number reversals appearign frequently. At seven, these errors have improved, but are not gone.
By age eight, most children stopped showing neglect of the left side. Children as old as twelve,
however, were still making minor spacing errors in their drawings.
Children with Attention Deficit Hyperactivity Disorder (ADHD) lagged behind their
peers in developing clock drawing ability (Cohen et al., 2000). They continued to show
significant upper left quadrant neglect long after others the same age had resolved the issue.
Similarly, Eden et al. (2003) found similar differences in CDT results of children with dyslexia.
These children showed significant left side neglect, but noticed their mistakes immediately,
unlike some subjects with brain damage or dementia. The differences in the drawings were
independent of gender, handedness, or IQ. More research is needed to esablish whether CDT
could help identify children with SLD.
Controlled Drawing Observation. Controlled Drawing Observation (CDO) was
developed by Krogh in 1977 (as cited by Häidkind, Kikas, Hunno, & Peets, 2011) as a means to
assess a child’s school readiness and academic achievement. The CDO has been used in
Denmark, Finland, and the Baltic countries as a screening assessment for kindergarten. It is an
unusual assessment, because it requires administration in a group setting. The reason for this is
because observing how the child reacts to a typical classroom structure, with social interaction
and possible distractions, is one of the means of assessment. The test instructions are given
orally, and the child is required to divide up the paper, and draw a series of common shapes.
Scoring is based upon how well the child attended to the task, their drawing ability, and their
ability to follow the verbal instructions. Häidkind et al. (2011) administered the CDO
assessment at the beginning of kindergarten along with more traditional individual assessments.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 34
The results were compared to teacher assessments and academic achievement tests taken at the
end of first grade. The CDO results predicted the academic achievement tests more successfully
than the other means of assessment.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 35
CHAPTER III
Methodology and Procedure
Search
This systematic literature review was conducted by searching the available databases
multiple times throughout the year. The resources of the libraries at Saint Mary-of-the-Woods,
the University of Texas, and the Austin Public library were utilized. Resources were also
obtained through interlibrary loans. Table 1 contains a list of databases that were searched.
Table 1
Alphabetical Listing of Databases Searched
Academic Search Elite
Academic Search Premier
Dissertation Abstracts International
Education Resources Information Center (ERIC)
JSTOR
LexisNexis Academic
ProQuest Digital Dissertations
ProQuest Education Journals
PsycARTICLES
PsycINFO
Research Library
SAGE Journals Online
ScienceDirect
Search terms that were used include graphic development, specific learning disorder,
drawing assessments, intelligence, and combinations and variations of those. A complete list of
keyword search terms is listed in Table 2. Searches terms for materials referenced in other
works included specific authors, titles, and journal names.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 36
Screening
The sources found through the search methods described were assessed for relevancy and
applicability to the research topic. Since so few resources specifically addressing the connection
between graphic development and learning disabilities exist, the search was broadened. Sources
about influences on the process of graphic development, art-based assessments of cognitive
functioning and/or academic achievement, and the relationship between learning disabilities and
graphic or visuomotor skills were included in the literature review. The year and type of
publication was taken into consideration, with emphasis was on gathering the most current and
relevant research.
Data Analysis
In total, 139 sources were used in the writing of this thesis. The publication dates of
those 139 resources range from 1902 to 2014. Ten resources (7.2%) were published prior to
Table 2
Table of search terms
Academic achievement
Academic assessment
Academic performance
Art
Art assessments
Art ability
Art education
Art Therapy
Bender Gestalt
Clock Drawing Test
Cognitive ability
Cognitive development
Draw a Man
Draw a Person
Drawing
Drawing ability
Drawing development
Drawing tests
Dyscalculia
Dyslexia
Dyspraxia
Executive function
Goodenough-Harris Drawing
test
Graphic development
House Tree Person
Human Figure drawings
Intelligence
IQ
Koppitz Developmental
Inventory
Learning disability
Learning disorder
Learning problems
Naglieri
Psychology
School achievement
School readiness
Screening
Silver Drawing Test
Specific learning disorder
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 37
1960. Twenty-four (17.3%) were published between 1961 and 1980. Forty-six (33.1%) were
published between 1981 and 2000, and fifty-nine (42.4%) were published from 2001 to 2014.
The breakdown of these dates is shown in Figure 3. As previously stated, emphasis was on
gathering the most current information available. The older sources that are included are mostly
seminal works, such as Goodenough’s (1926) original publication of her drawing test. A few of
the older works, such as Berdie’s (1945) study using the DAM test prior to its revision by Harris,
are included because of their evaluation and historical perspective of older versions of drawing
tests discussed.
Figure 3. Publication Dates
The types of resources used in the analysis varied. The breakdown of the types is in
Figure 4. Twenty-one (15.1%) were books, three (2.2%) were doctoral dissertations, One
hundred twelve (80.6%) were from peer-reviewed journals, and three (2.2%) were from other
sources. The other sources included a masters thesis, and two online resources.
Publication Dates
1902-1960 1961-1980 1981-2000 2001-2014
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 38
Figure 4. Types of Resources
Types of Resources
Book Docteral Dissertation Journal Article Other
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 39
CHAPTER IV
Results
According to the CHC theory of intelligence (Niileksela & Reynolds, 2014), successful
cognitive performance is achieved by all the smaller specific skills working together in harmony
to complete a task. The current conceptualization of SLD is that the person’s overall
intelligence, g, is intact, but they struggle to achieve to their potential academically because of
dysfunction in one or more of the narrow subsets of cognitive functioning. Researchers have
theorized that development of graphic ability uses many of the same skills as development of
academic ability (Mati-Zissi & Zafiropoulou, 2001). Visuospatial processing and graphomotor
functioning is the result of cognitive processes. Assessment of drawings is one way to evaluate
these skills, and its tangible nature is an easy, non-invasive means to evaluate intangible
cognition.
These attempts at assessing cognition via graphic development have met with mixed
results and have limited general applicability for several reasons. One reason is due to weak
methodology (Scott, 1981). Many of the studies, especially older ones, have unclear definitions
of the population studied in the test. Before the current concept and terminology of SLD arose in
the in the 1960’s, many students with SLD were categorized as “mentally retarded” and grouped
homogenously in the same category as children with very different characteristics (Courtad &
Bakken, 2011). Therefore, the results of these studies may not be generalizable. In addition to
treating different diagnostic populations as homogenous, another way in which children were
incorrectly homogenized was with wide age and/or IQ ranges treated as a single group (Scott,
1981). Lastly, some studies lacked a control group. These limitations and study flaws may
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 40
account for the varying results researchers have had when studying HFD assessments. What is
left is a murky, but promising, picture of the ability of art-based assessments to evaluate
cognitive functioning.
Art based psychological assessments reveal a great deal about a child’s cognitive
abilities, and advances in technology, along with updated theoretical foundations, are beginning
to be able to explain why. For example, the CDT assesses planning ability, neglect, deficits in
motor control, and self-monitoring (Cohen et al., 2000). In studies with adults, difficulty in these
areas was linked to specific areas of the brain. No studies have been done comparing brain
imaging of children to their CDT, but theoretically, children with similar difficulties as the adults
studied would have abnormalities or underdevelopment in the same areas. Another example of a
discovery assisted by recent technological innovation is that children with SLD seem to lack the
ability to predict the consequences of their graphomotor actions (Smits-Engelsman, Wilson,
Westenberg, & Duysens, 2003). This lack of prediction is one of the reasons drawings from
children with SLD would differ qualitatively from children without SLD.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 41
CHAPTER V
Conclusions, Discussion, and Recommendations
Conclusions and Discussion
This literature review across disciplines reveals that many researchers in their respective
fields have attempted to examine the relationship between characteristics of children’s drawings
and cognitive development. Researchers have used many different types of drawing tasks, with
scoring systems with criteria based on aspects of graphic development. The specific goal in
several of these studies was to determine whether a drawing assessment could be used as an
accurate screening tool to predict academic success or general IQ. As hypothesized, many of
these studies did find differences in the drawings of children with SLD and those without. The
significance of correlation varied in different studies, however. The identification of specific
graphic characteristics correlated the presence of SLD has not been established.
Recommendations
There is a need for additional well-designed studies with appropriately matched control
and experimental groups. In these studies, comparison of the overall score of children with SLD
is helpful, but it will bring richer understanding if the researchers break down specifically which
areas the children draw differently. For example, are the scores lower because of lack of details,
or because of incorrect proportions? Additionally, it may be informative to compare the
drawings of children with SLD to controls who are matched by overall IQ level. That way,
researchers could distinguish if the difference in the drawing is a function of IQ or the SLD.
In the review of the research, there was no literature about comparisons of drawings done
by children with different types of SLD. All the research found was comparisons between
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 42
children with and without SLD, as if students with SLD are one homogenous group. Different
SLD involve deficits in different narrow cognitive processes, so they might have distinct
characteristics that manifest differently in drawings. It will be informative to focus the studies to
compare drawings by children with specific types of SLD, since little is known about whether
drawings from children with dyslexia differ from those drawn by children with dyscalculia.
GRAPHIC DEVELOPMENT AND LEARNING DISABILITIES 43
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