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Odic, Darko; Libertus, Melissa E.; Feigenson, Lisa; Halberda, Justin – Developmental Psychology, 2013
From very early in life, humans can approximate the number and surface area of objects in a scene. The ability to discriminate between 2 approximate quantities, whether number or area, critically depends on the ratio between the quantities, with the most difficult ratio that a participant can reliably discriminate known as the Weber fraction.…
Descriptors: Young Children, Age, Adults, Age Groups
Cleary, Laura; Looney, Kathy; Brady, Nuala; Fitzgerald, Michael – Autism: The International Journal of Research and Practice, 2014
The "body inversion effect" refers to superior recognition of upright than inverted images of the human body and indicates typical configural processing. Previous research by Reed et al. using static images of the human body shows that people with autism fail to demonstrate this effect. Using a novel task in which adults, adolescents…
Descriptors: Visual Perception, Human Body, Adolescents, Autism
Reed, Phil; Gibson, Evelyn – Journal of Autism and Developmental Disorders, 2005
Stimulus over-selectivity is a phenomenon displayed by individuals with autism, and has been implicated as a basis for many autistic-spectrum symptoms. In four experiments, non-autistic adult participants were required to learn a simple discrimination using picture cards, and then were tested for the emergence of stimulus over-selectivity, both…
Descriptors: Foreign Countries, Visual Stimuli, Autism, Experiments

Staller, Joshua; Sekuler, Robert – American Journal of Psychology, 1976
Adults and children judged mirror and nonmirror pairs of stimuli. The findings in this research suggested a nonperceptual explanation of mirror-image confusions, one involving conceptual and linguistic considerations. (Editor/RK)
Descriptors: Adults, Children, Concept Formation, Diagrams