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How to measure spatial abilities in visually impaired people? Frank J.J.M. Steyvers ICTTP 2012.

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Presentation on theme: "How to measure spatial abilities in visually impaired people? Frank J.J.M. Steyvers ICTTP 2012."— Presentation transcript:

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2 How to measure spatial abilities in visually impaired people? Frank J.J.M. Steyvers ICTTP 2012

3 Issue ›Applied research: often no problem ›Relation with fundamental research is missing Many spatial ability test are visual Useless for Visually Impaired Persons (VIPs)

4 Tests suitable for VIPs ›Performance tests (“self” constructed) Zoo-test Lego-test ›Referenced with Corsi block test Money road map test Santa Barbara Sense of Direction Test Kozlowski & Bryant scale GIT: puzzle, calculations, word matrices

5 Method ›48 normally sighted, matched with VIPs from previous research ›Counterbalanced execution of the various tests ›Calculation of correlations

6 Zoo-test ›Description of plan of a zoo (survey condition) route through a zoo (route condition) ›20 questions about relation between items both in survey- and in route-condition ways ›Repeated twice ›Performance: # questions correct

7 Reptile house Cat-like predators Bears African animals Birds Monkey rock Mountain animals Aqua- rium Insect house Children’s playground Petting zoo Ticket booth Restaurant Entrance Zoo-plan

8 Lego-test ›Feel construction of 3 “towers” on a base plate for 10s ›Copy from memory with loose bricks ›Performance: completion time accuracy on four dimensions (location, orientation, height, and brick type) ›Use: both hands, preferred hand, non-preferred hand, both hands + vision ›Three trials each

9 Lego-test material

10 Corsy block (tapping) test ›Tapping an increasingly complex pattern on a plate with nine blocks (numbers invisible) ›Subject has reconstruct the tapping pattern in normal or in reversed order

11 Money Road map test ›Show a tracing pencil op the map ›Subject has to indicate the direction of the turns as if in the pencil tip (like a car)

12 SBSOD-scale ›15-item scale with a resolution of 7 between the scale anchors

13 Kozlowski & Bryant scale ›One-item scale: “How good is your sense of direction?” ›Originally with a resolution of 9 between the scale anchors ›For this study added as a 16th item to the SBSOD- scale with a resolution of 7 between scale anchors

14 Groninger Intelligence Test (GIT) ›Calculations: solving 40 additions of three numbers asap, e.g., ›Puzzles: select from a set of forms those necessary to complete a more complex figure (compare with tangram, only the figures and forms are drawings) ›Word matrices: complete analogies (mc), e.g., high – low  big – … 1) strong; 2) heavy; 3) deep; 4) firm; 5) small

15 Results 1: corr. with performance tests

16 Results 2: corr. with self-reports

17 Discussion 1 ›No clear picture ›Performance tests: corr. between ZOO and Lego-details corr. between ZOO and Corsi Longest corr. between ZOO and Money errors corr. between Lego and Corsi #correct corr. between Lego and Corsi Longest ›Self-reports: no correlations with questionnairs … (cont)

18 Discussion 2 ›GIT subtests: corr. between ZOO and GIT puzzle corr. between ZOO and GIT complete corr. between Lego details and GIT calculations ›Other (older) results: No corr. with Big-5 No corr. with Working Memory size (number lists) No corr. with spatial mental rotation test No corr. with field-dependency tests No corr. with handedness, or gender

19 Conclusion ›Some spatial results with performance tests ›The search continues… ›Any questions? ›This presentation is based on the Ba-theses of Willem Takens, Sophie Snoek, Tessa Drent, Tijo Knol, Remco Paulusma, Gerdine Douma, Pauline van Dijk and Marlot Schuurman, all supervised by the author

20 Thank you for your attention

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