Cluster analysis of data from 166 children with autistic spectrum disorders revealed 4 subtypes with differences in behavioral and cognitive areas. The four subtypes include a typically autistic group, a low-functioning group, a high-functioning group (Asperger syndrome/schizoid), and a hard-to-diagnose group with mild/moderate retardation and a…

Examination of 53 children with autism supported the validity of the subtypes "aloof" and "active-but-odd" as predictors of behavior across language/communication, reciprocal social interaction, and stereotyped behavior/restricted interest domains. Partial support for an intermediate, "passive" subtype was garnered. (Author/JDD)

This study examined dynamic assessment as a less biased evaluation procedure for assessing the language-learning ability of Native American young children (N=23) identified as either stronger or weaker language learners. Through a test-teach-test protocol, participants were taught principles of categorization. Results supported the further…

This study examined the validity and internal and interrater reliability of the Wing Subgroups Questionnaire, an assessment that classifies children with autism into subtypes. Subjects were 42 students (ages 5 to 22) enrolled in multihandicapped special education classrooms. Findings support the reliability and validity of the questionnaire for…

The performance of reading-disabled, math-disabled, slow-learning, under-achieving, and normal-achieving children (total n=143) was compared on verbal and visual-spatial working memory measures under initial, gain, and maintenance testing conditions. Ability group classifications changed under dynamic testing conditions. The study demonstrated the…

Systems for classifying speakers' communicative intents are typically limited in scope, in applicability across the full developmental range of language abilities and disabilities, and in their theoretical foundations. Criteria for an adequate system for analyzing communicative intents are discussed, and a system is proposed which meets those…

This study compared 4 methods (2 case history and 2 performance-based) used to classify the status of adult subjects in familial studies of developmental language disorders, involving 24 parents of children with developmental language disorders and 24 unrelated adult controls. Classification by case history found fewer affected adults than…