The Effects of Expertise and Guidance on Learning: Can We...
Transcript of The Effects of Expertise and Guidance on Learning: Can We...
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The Effects of Expertise andGuidance on Learning:
Can We Distinguish Two Types of Expertise?
Franck Amadieu, University of Toulouse
André Tricot, South Pyrenees University for Teachers Education
Claudette Mariné, University of Toulouse
Work & Cognition LaboratoryLaboratoire Travail & Cognition
Toulouse - France
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AimsAims of of thethe studystudyn Cognitive load theory studies multimedia learning as an integration
of multiple sources documents. We investigated learning withmultiple textual documents, according to 2 structures:è Simple structure = linear (high guidance)è Complex structure = nonlinear (low guidance)
1. Level of expertise & structure (level of non-linearity)è Strong structure provides construction of a conceptual structure for novices and improves comprehension & learning (Hillinger et Leu, 1994 ;Naumann et al., 2001; Potelle & Rouet, 2003 ; Shapiro, 2000 ; Shin et al., 1994)è No real effect of structure for experts
2. Type of expertise: monovalent (one experience) vs. polyvalent (several experiences).
è Several experiences allow the construction of a high level of abstract knowledge (Briggs, 1988, 1990)
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2 models in order to study the effects of prior knowledge andguidance provided by structures on learning
1. Cognitive Load Theory (Sweller) : expertise reversal effect (Kalyuaga et al., 2003)
è Novices : need a guidance for learning to compensate for the lack of schemas
è Experts : guidance may act in a negative way
2. Construction-Integration Model (Kintsch, 1988) :
è 2 level of text representation = text base & situation model
è Novices : text with high coherence = relevant situation model
è Experts : text with low coherence = elaborative inference generation(McNamara et al., 1996)
TheoryTheory
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AssumptionsAssumptions
n 1. Level of Expertise : Novices vs Expertsè Novices need a strong guidance to construct an elaborated situation
model and to facilitate knowledge acquisition, whereas experts need a low guidance à expertise reversal effect
n 2. Type of Expertise : Monovalents vs Polyvalents
è Monovalent experts have fewer different schemas than polyvalent experts, thus when it comes to processing new knowledge, their comprehension and learning should be lower than for polyvalents
è Polyvalents have high abstract schemas which allow them to use nonlinear structure more efficiently than monovalents, because they are able to maintain and store more information than monovalents in working memory
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MethodMethodn Course topic : Cognitive Flexibility Theory (Spiro)n Instruction : « to memorize and understand a maximum of informations »
n Expertise : è novices (32 students) = no pedagogic knowledge or teaching experienceè monovalent experts (35 future high school teachers ) : they know one or no
learning theoryè polyvalent experts (20 future primary school teachers ) : they know several
learning theories
n Controlled : level of computer and WEB use, level of study, age
n Documents organisation : linear structure (high guidance) vs. nonlinearstructure (low guidance)
n Performance : memorization (MCQ), comprehension (MCQ) and transfer(problem solving)
n Mental efficiency (Paas & Van Merriënboer, 1993) : based on subjective load (scale: 9 points)
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ResultsResults : : levellevel of expertise (novices vs. experts)of expertise (novices vs. experts)
- Memorization (text base) = no effects- Comprehension (situation model) = no effects- Transfer (situation model + knowledge acquisition) = Interaction effect
(p<.001)- Efficiency :
-For novices linear structure is more efficient than nonlinear structure (p<.01)-Nonliner structure is more efficient for experts than for novices (p<.05)
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LinearNonlinear
ResultsResults: Type of expertise (monovalent vs. polyvalent): Type of expertise (monovalent vs. polyvalent)
- Memorization (text base) = Polyvalents > Monovalents (p<.01)- Comprehension (situation model) = Polyvalents > Monovalents (p<.001)- Transfer (situation model + knowledge acquisition) = Polyvalents >
Monovalents (p<.001)- Efficiency
-Efficiency is higher for polyvalents than for monovalents (p=.05)-In nonlinear condition, efficiency is higher for polyvalents (p=.05)
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ConclusionsConclusions
n Level of expertise: è A strong structure help novices to construct a conceptual
organization of contentè But no structure effect for experts = we did not obtain the expected
results about expertise reversal effect
n Type of expertise:è We demonstrated that we can take into account different types of
expertise• Polyvalents succeed better than monovalents• Polyvalents are more efficient only when working on nonlinear structure
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Future Future researchresearch
n A greater contrasting of the 2 structures: è Contruct a structure more nonlinear (e.g. network structure)
n Investigate 2 levels of coherence and their interaction :è Super-structure : level of linearity of documents structureè Macro-structure : coherence involved by the content (titles, argument
overlap, causal structure…)
n Investigate elements interactivity : learning a fonctional systemè Structural elements = low interactivityè Fonctional elements = high interactivity
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ThanksThanks a lot for a lot for youryourattention !attention !
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2 2 levelslevels of of organizationorganization (structure)(structure)
A B
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Intro 1a 2a 3a 4a 1b 2b 3b
1c 2c 3c 4c 5c End
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Intro
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1. 1. LinearLinear Structure (Structure (highhigh guidance)guidance)
2. Arborescent Structure 2. Arborescent Structure withwith somesome crosscross-- links (links (lowlow guidance)guidance)
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LinearLinear structurestructure
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HypertextHypertext structurestructure
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Influence of Influence of otherother variablesvariables
n Level of study on memorization & transfer task :è level of study increases = text-based questions scores increaseè level of study increases = transfer task scores increase
n Level of computer use on memorization : è computer use increase = text-based questions scores decrease