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Enhanced Access to Early Visual Processing of Perceptual Simultaneity in Autism Spectrum Disorders
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Falter, Christine M.; Braeutigam, Sven; Nathan, Roger; Carrington, Sarah; Bailey, Anthony J. – Journal of Autism and Developmental Disorders, 2013
We compared judgements of the simultaneity or asynchrony of visual stimuli in individuals with autism spectrum disorders (ASD) and typically-developing controls using Magnetoencephalography (MEG). Two vertical bars were presented simultaneously or non-simultaneously with two different stimulus onset delays. Participants with ASD distinguished…
Descriptors: Pervasive Developmental Disorders, Autism, Visual Stimuli, Experimental Groups
Recognition by Humans and Pigeons of Novel Views of 3-D Objects and Their Photographs
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Friedman, Alinda; Spetch, Marcia L.; Ferrey, Anne – Journal of Experimental Psychology: General, 2005
Humans and pigeons were trained to discriminate between 2 views of actual 3-D objects or their photographs. They were tested on novel views that were either within the closest rotational distance between the training views (interpolated) or outside of that range (extrapolated). When training views were 60? apart, pigeons, but not humans,…
Descriptors: Photography, Perception Tests, Visual Perception, Animals
Test Review: Colarusso, R. P., & Hammill, D. D. (2003). "Motor-Free Visual Perception Test."(3rd ed.). Novata, CA: Academic Therapy Publications
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McCane, Sara Jean – Journal of Psychoeducational Assessment, 2006
The Motor-Free Visual Perception Test: Third edition (MVPT-3; Colarusso & Hammill, 2003) purports to measure overall visual perceptual ability. Task responses require no motor ability, eliminating the effect of motor performance on the overall visual perception score. The test authors suggested that this MVPT-3 characteristic allows for its…
Descriptors: Visual Perception, Perception Tests, Test Reviews, Psychomotor Skills
Visual Perceptual and Visual Motor Performance Differences in Children with Learning Disabilities.
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Daniels, Linda E.; Wong, Kathy – B.C. Journal of Special Education, 1993
The scores of 15 children (ages 5-10) with learning disabilities on the Test of Visual Perceptual Skills and the Developmental Test of Visual Motor Integration revealed that visual perception and visual motor skills are separate, though related, functions and that visual motor scores were significantly lower than visual perception scores. (JDD)
Descriptors: Disability Identification, Elementary Education, Learning Disabilities, Perception Tests
Perceptual Bases of Visual Literacy.
Messaris, Paul – 1993
The perceptual bases of visual literacy are explored, drawing on research into the interpretation of pictures by viewers not familiar with pictorial representation. Research has indicated that inexperienced viewers do not find it difficult to recognize pictures that may be discrepant in color or shape from a familiar object, but may be troubled by…
Descriptors: Access to Information, Nonverbal Communication, Perception Tests, Sensory Experience
New Tests for Identifying Hearing-Impaired Students with Visual Perceptual Deficits: Relationship between Deficits and Ability to Comprehend Sign Language.
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Ratner, Vivienne – American Annals of the Deaf, 1988
The Test of Visual Perceptual Abilities and the Test of Spatial Perception in Sign Language were developed and administered to 682 hearing-impaired students, aged 8-18. Results showed that a significant relationship exists between visual perceptual abilities and the ability to comprehend the essential spatial components of sign language.…
Descriptors: Ability Identification, Diagnostic Tests, Elementary Secondary Education, Handicap Identification