Mind Earth Spatial Thinking in Geosciences Kim Kastens CIESIN Spatial Seminar, 05/05/05.

MindEarth

Spatial Thinking in Geosciences

Kim Kastens

CIESIN Spatial Seminar, 05/05/05

Thanks to:• Toru Ishikawa, L-DEO

• Lynn Liben, Penn State psychology dept

• Participants in GSA Pardee Symposium, October 2002: “Toward a Better Understanding of the Complicated Earth: Insights from Geologic Research, Education, and Cognitive Science.”

• Participants in Wingspread Symposium, July 2002: “Bringing Research on Learning to the Geosciences”

• Members of NRC Committee on “Enhancing Spatial Thinking in K-12 Education”

LithosphereAtmosphere

Hydrosphere

LithosphereAtmosphere

HydrosphereFertile researchareas at interfaces

MindEarth

MindEarth

Fertile researcharea at interface

MindEarth

Fertile researcharea at interface

How does the human mind comprehend and reason about something as big, old, and complicated as the Earth System?


• having evolved to think about spatial scales ranging from a handsbreadth to the distance one could walk in a day…



• and temporal scales from a moment to a day to a season to a year to a lifetime…



• and temporal scales from a moment to a day to a season to a year to a lifetime…

• and complexity scales from ??? to ???

(Photo from www.nps.gov/gumo/ adhi/adhi3.htm)

“Oil is found in the minds of men” [and women]

Wallace Pratt, Humble Oil

… and so is every other discovery and insight in geoscience!

Know the strengths andweaknesses and limitations of your instruments.

www-mpl.ucsd.edu/research_programs/ deeptow.html

A Case Study:Spatial Thinking in the Geosciences

A Case Study:Spatial Thinking in the Geosciences

What are the spatial thinking tasks that expert geoscientists excel at ….and that geoscience students must master?

Describing the shapes of natural objects, rigorously and unambiguously.

Categorizing objects by their shape.

Ascribing meaning to the shape of a natural object.

• Recognizing a shape or pattern amid a cluttered noisy background.

Visualizing a 3-D object or structure or process by examining observations collected in one or two dimensions.

Describing the position and orientation of objects in the real world relative to a coordinate system anchored to the Earth.

Recalling locations of previously observed geological phenomena.

Mentally manipulating a volume by folding, faulting, and eroding.

• Envisioning the motion of objects or materials through space in three dimensions.

• Making and interpreting spatial representations (including maps).

• Using spatial thinking to think about time.

Using spatial thinking to think about non-spatial properties.


Crystallographer’s description of crystal: “a symmetry plane at right angles to each of the 2-fold rotation axes, and four 3-fold axes of rotary inversion.”

Figures 60 from: Hurlbut, Cornelius S. (1971) Dana’s Manual of Mineralogy, 18th ed. New York: John Wiley & Sons, Inc.

Figure A11 from: Hobbs, Bruce E., Winthrop D. Means, and Paul F. Williams (1976) An Outline of Structural Geology. New York: John Wiley & Sons, Inc.


Elements used in geoscientists’ descriptions of shapes:

• Symmetry

• Size

• Angular relationship

• Projections of 3-D objects onto a plane


Downs and Liben (1991) studied college students’ ability to anticipate the form of a shadow cast by a shape rotated to various angles.

Figure 5B in: Downs, Roger M. and Lynn S. Liben (1991) The Development of Expertise in Geography: A Cognitive-Developmental Approach to Geographic Education. Annals of the Association of American Geographers, 81(2), pp.304-327.


They found that college students performance on projective tasks is poor when the shapes are three dimensional.

Figure 2 in: Merriwether, Ann M. and Lynn S. Liben (1997) Adults’ Failures on Euclidean and Projective Spatial Tasks: Implications for Characterizing Spatial Cognition. Journal of Adult Development, Vol. 4, No. 2.


• What is known about how people perceive symmetry?

• What is known about how people estimate size and distance?

• What is known about how people estimate angles?

Question:

Marshak, Stephen, (200) Earth Portrait of a Planet, new York, W.W. Norton & Co. Inc., Appendix B-2 Flow Charts for Identifying Minerals .

Classifying or categorizing an object by its shape.

Collins and Quillian’s (1969) seminal paper on how knowledge is represented in the brain, postulated that concepts are represented as hierarchies of inter-connected concept-nodes.


M. W. Eysenck & M. T. Keane (1995). Cognitive psychology: A student's handbook. Hove, UK: Psychology Press.

A schematic diagram of the sort of hierarchical, semantic networks proposed by Collins and Quillian (1969).

They tested this hypothesis by measuring the time to answer questions that require a search from one node to another, e.g.. “Is a canary a bird?” vs. “Is a canary an animal?”


M. W. Eysenck & M. T. Keane (1995). Cognitive psychology: A student's handbook. Hove, UK: Psychology Press.

Questions:

•Did humans evolve a brain that organizes knowledge in hierarchies in order to make sense of a world which is inherently organized that way?

•Do we impose hierarchical organizational schema on nature because that is how our brains are good at organizing knowledge?

or



Source: http://www.glg.ed.ac.uk/cgi-bin-2/config2-spvft

Source: http://www.geolab.unc.edu/Petunia/IgMetAtlas/meta-micro/mylonite.X.html

Mylonite. Note fine grain size and strong foliation probably caused by intense shearing.

Distribution of modern species of planktonic foraminifera. Figure 16-1 in: Kennett, James (1982) Marine Geology. Englewood Cliffs, NJ: Prentice-Hall, Inc.

Misconception Research:

Kusnick’s (2002) analysis of student narratives about rock formation found that many students believe that pebbles “grow” or accrete.


• How do people go from observations about shape, geometry, and pattern to inferences about process and causality?

Form follows function

Form reflects formative processes

Meaning is inferred from co-occurrence under known conditions.

Meaning is inferred in situation with only one dominant causal factor.


Question:

Visualizing a 3-D object or structure or processby examining observations collected in

one or two dimensions.

Marie Tharp in her Lamont Hall office, c. 1961.

World Ocean Floor by Bruce C. Heezen and Marie Tharp.



David Marr’s (1982) studies of visual perception emphasize that we have vast experience translating from 2-D data to 3-D mental models.



Question

• Can we build on this notion of primal sketch and 2 1/2 dimensional sketch as a way to help learners go from 1-D or 2-D viewer-centered (or sensor-centered) data to a 3-D mental model not tied to viewpoint?

Describing the position and orientation of objects in the real world relative to a coordinate system anchored to

the Earth.

Levinson (1996) describes 3 frames of reference…


the Earth.

S. C. Levinson (1996). Frames of reference and Molyneux's question: Crosslinguistic evidence. In P. Bloom, M. A. Peterson, L. Nadel, & M. F. Garrett (Eds.), Language and space (pp. 109-169). Cambridge, MA: MIT Press.

… and has designed tasks to reveal whether subjects have employed intrinsic, relative, or absolute frames of reference during the task.


the Earth.


Subjects in westerncultures overwhelmingly used a relative frame of reference...

… but that tendency is not the same across cultures.


the Earth.


• How can we foster learners’ ability to think in absolute frames of reference within a language which seems to favor relative frames of reference?

• How do people convert information from a relative frame of reference to an absolute frame of reference?


the Earth.

Question:


I know I’ve seensomething like thisbefore.… Nowwhere was that?


Figure 3 from: Eals, Marion and Irwin Silverman (1994) The Hunter-Gatherer Theory of Spatial Sex Differences: Proximate Factors Mediating the Female Advantage in Recall of Object Arrays. Ethnology and Sociobiology, 15: 95-105.

McBurney et al. (1997) and Eals and Silverman (1994) test subjects’ recall of location of objects.

In contrast to many spatial skills, they find females out-perform males.

Memory Score as a Function of Sex

Male Female

Mean 224.6 179.7

SD 38.4 30.7

Note: Higher numbers indicate poorer performance.

McBurney, D. H., S. J. C. Galin, et al. (1997). "Superior spatial memory of women: stronger evidence for the gathering hypothesis.” Evolution and Human Behavior 18: 165-174.



They attribute this to women’s evolutionary role as gatherers who needed to remember the location of medicinal and edible plants.

"Rice Gatherers" by Seth Eastman, 1867, from the Capitol, Washington, D.C.

Questions

• Can the evolutionary dimorphism hypothesis be tested?

• Can we extrapolate from a table top to a geologist’s entire world of remembered outcrops?

• Can we extrapolate from a half hour experiment to a geologist’s lifetime of field experiences?

• What other aspects of location memory should be studied (in addition to gender contrast) to support geoscience experts and geoscience learners?


Mentally manipulating a volume by folding, faulting and eroding.

Figure 24.13 in: Ramsay, John G. and Martin I. Huber (1987) The Techniques of Modern Structural Geology, Volume 2: Folds and Fractures. New York: Academic Press; Harcourt Brace Jovanovich, Publishers.

Paper folding tasks are classic measures of spatial visualization ability.


J. Eliot & I. M. Smith (1983). An international directory of spatial tests. Windsor, UK: NFER-NELSON.


Question:

• What has been learned from >50 years of studying paper folding, that can be applied to thinking about the folding of geological strata?


Questions

• Why is spatialization of non-spatial information so powerful?

• How can we help learners learn to harness the power of spatialization?

Lamont Research

Describing the shapes of natural objects




Visualizing a 3-D object or structure or process.





Making and interpreting spatial representations (including maps).



How do geology students learn to visualize 3-D geologic structures from the limited information available in outcrops?

How do geology students learn to visualize 3-D geologic structures from the limited information available in outcrops?

3-D variant of Piaget’s water level task.

Lamont Research

Describing the shapes of natural objects




Visualizing a 3-D object or structure or process.





Making and interpreting spatial representations (including maps).



How do children learn to “translate” from3-D reality to 2-D map?

MAP

Bird's eye View

Spare, schematic

Unchanging

The map issmaller thanthe child

REALITY

Profile View

Intricately detailed

Changesday/night

& seasonally

Reality isbigger than

the child

translate

How do children learn to “translate” from3-D reality to 2-D map?.


Baseline


Baseline Reflecting

Among the reflecting students, we see:

• few clue-answers that are inaccurate descriptions of reality, but many clue-answers that are insufficient to pinpoint sticker,

• many sticker placements that are wrong, but wrong in a way that is consistent with the corresponding clue-answer.


Difficult Not so difficult


Verbal description:• The orange sticker is on the mansion.• It’s on a corner of the mansion.• It’s on the corner closest to the path that leads to the pond.


Baseline Reflecting Verbal Description

How well do maps communicate complex information to policy-makers?

Question 3:

Complete the following sentence on the basis of threshold maps and

a forecast map:

“The probability is _____% that Charleston, South Carolina, will receive

more than _____ mm of precipitation”

• Results:

Major types of misconceptions:• (below_%) = 100 – (above_%).• If classified as above-normal, (below_%) = 0; If classified as below-normal, (above_%) = 0.

Above-normal precip. cities:

Bottom Line

• Fascinating questions

• Few answers

• Lots of opportunity

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Mind Earth Spatial Thinking in Geosciences Kim Kastens CIESIN Spatial Seminar, 05/05/05.

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