Furthermore, performance significantly positively correlated with nonverbal intelligence quotient (NVIQ) for all child groups and the young adult ASD group.
Both child groups also completed a computer-based chromatic discrimination threshold test, which assessed discrimination along cone-opponent (“red-green,” “blue-yellow”) and luminance cardinal axes using a controlled staircase procedure.įarnsworth-Munsell 100-Hue test performance was better in adults than in children. General intelligence was measured using the Wechsler Abbreviated Intelligence Scale and Wechsler Intelligence Scale for Children. Participants were divided into two main age groups, children (6–15 years) and young adults (16–25 years), with each group further subdivided into typically developing (TD three groups TD 6–7 years, TD 8–9 years, TD Adult) individuals and atypically developing individuals, all but one carrying a diagnosis of Autism Spectrum Disorders (ASD two groups atypically developing child 7–15 years, ASD Adult). This study investigates how general intellectual ability relates to performance on both the FM100 and a new computer-based chromatic discrimination threshold test, across different age groups in both typical and atypical development. Its dependence on seriation ability raises questions as to its universal suitability and accuracy in assessing purely sensory discrimination.
The Farnsworth-Munsell 100-Hue test (FM100) is a standardized measure of chromatic discrimination, based on colored cap-sorting, which has been widely used in both adults and children.
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