Journal
TOPICS IN COGNITIVE SCIENCE
Volume 15, Issue 1, Pages 46-74Publisher
WILEY
DOI: 10.1111/tops.12597
Keywords
Spatial perspective taking; Spatial cognition; Individual differences; Item response theory
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This study examined the psychometric properties of four spatial perspective taking (PT) tests and investigated the relation of PT scores to general intelligence, working memory, and mental rotation (MR). All tasks showed good construct validity, with PPTT demonstrating the highest measurement precision across a wide range of PT ability. PTT-A and PPTT had relatively higher divergent validity from MR compared to SOT.
Research on spatial thinking requires reliable and valid measures of individual differences in various component skills. Spatial perspective taking (PT)-the ability to represent viewpoints different from one's own-is one kind of spatial skill that is especially relevant to navigation. This study had two goals. First, the psychometric properties of four PT tests were examined: Four Mountains Task (FMT), Spatial Orientation Task (SOT), Perspective-Taking Task for Adults (PTT-A), and Photographic Perspective-Taking Task (PPTT). Using item response theory (IRT), item difficulty, discriminability, and efficiency of item information functions were evaluated. Second, the relation of PT scores to general intelligence, working memory, and mental rotation (MR) was assessed. All tasks showed good construct validity except for FMT. PPTT tapped a wide range of PT ability, with maximum measurement precision at average ability. PTT-A captured a lower range of ability. Although SOT contributed less measurement information than other tasks, it did well across a wide range of PT ability. After controlling for general intelligence and working memory, original and IRT-refined versions of PT tasks were each related to MR. PTT-A and PPTT showed relatively more divergent validity from MR than SOT. Tests of dimensionality indicated that PT tasks share one common PT dimension, with secondary task-specific factors also impacting the measurement of individual differences in performance. Advantages and disadvantages of a hybrid PT test that includes a combination of items across tasks are discussed.
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