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Siller, Michael; Sigman, Marian – Developmental Psychology, 2008
The objective of the current study was to evaluate the patterns of longitudinal change in the language abilities of 28 children with autism during early and middle childhood. Results from fitting a series of multilevel models showed that children's rate of language growth was independently predicted by (a) children's responsiveness to others' bids…
Descriptors: Mental Age, Autism, Language Acquisition, Longitudinal Studies
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Ward, L.O. – Journal of Psychology, 1982
Four hundred subjects 8 to 11 years old were given a modification of the Weigl Color Form Sorting Test in an attempt to assess the influence of chronological age, mental age, intelligence, and vocabulary level on the ability to utilize various numbers and different kinds of criteria of classification. (Author/MP)
Descriptors: Age Differences, Children, Chronological Age, Classification