title: Elevation easier than plan for sighted and early-blind adults in a perspective-taking task.
abstract: Plans show shapes of objects from above, and represent both their left-right order and their order in the z-dimension (the distance of the objects). Elevations show only the vertical shapes of objects arranged from left to right. Plans, having more spatial information, may be more difficult for participants to construct. Results from a study with sighted, sighted-blindfolded, and early-blind participants on Piaget's perspective-taking three-mountain task support this hypothesis. The plan task was judged more difficult than the elevation task even when participants performed with the same level of accuracy on both tasks. In visual and tactile tasks, amount of spatial-order information may determine difficulty, rather than plan versus elevation per se.
authors: National Taiwan University of Science and Technology, Taipei, Taiwan.
authors: Hsin-Yi
authors: HY
authors: Chao
authors: John M
authors: JM
authors: Kennedy
authors: Marta
authors: M
authors: Wnuczko
mesh_terms: D000293:Adolescent; D000328:Adult; D017668:Age of Onset; D001766:Blindness / Q000503:physiopathology*; D004215:Distance Perception / Q000502:physiology*; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D007600:Judgment / Q000502:physiology; D008297:Male; D008875:Middle Aged; D011597:Psychomotor Performance / Q000502:physiology*; D014110:Touch / Q000502:physiology; D055698:Touch Perception / Q000502:physiology; D015354:Vision, Low / Q000503:physiopathology*; D014785:Vision, Ocular; D055815:Young Adult