Adaptive behaviour is a crucial area of assessment for individuals with Autism Spectrum Disorder (ASD). This study examined the adaptive behaviour profile of 77 young children with ASD using the Vineland-II, and analysed factors associated with adaptive functioning. Consistent with previous research with the original Vineland a distinct autism…

The factor structure of the Autism Behavior Checklist (ABC) was examined with 383 individuals (aged 5-22 years) with autism spectrum disorders. A five-factor model accounted for 80% of the total variance. However, no support was found for classifying the checklist's 57 items into the previously proposed five subscales. (Contains references.)…

A method for empirical classification of autistic and autisticlike children, based on behavior observations of 35 males and 11 females (ages 4-28 years) was examined. Factor and cluster analysis indicated four subtypes, characterized by perseverative thinking and play, motor disturbances, schizotypal/schizoid features, and anxiety and negativism.…

The Gilliam Autism Rating Scale was developed to identify individuals with autism in research and clinical settings. It has benefited from wide use and acceptance but has received little empirical attention. The purpose of this study was to evaluate the construct and diagnostic validity, interrater reliability, and effects of participant…

Factor analysis of the Childhood Autism Rating Scale found three factors: (1) social impairment, (2) negative emotionality, and (3) distorted sensory response. Subjects with autism were distinguished from subjects with either pervasive or nonpervasive developmental disorders by higher scores on social impairment. Negative emotionality was most…

Teacher ratings on the Aberrant Behavior Checklist were collected on 666 students with mental retardation attending special classes. Classroom placement and age had significant effects on subscale scores, whereas sex failed to affect ratings. The study concludes that the original scoring method, developed for individuals in residential facilities,…

The Autism Behavior Checklist was completed for 67 autistic and 56 mentally retarded and learning-disabled children (ages 6-15). The checklist was effective in classifying children when using either the full scale or only the more highly weighted items. Results did not support a single unidimensional scale or subdividing the checklist into five…

The Nisonger Child Behavior Rating Form (NCBRF) is a behavior rating scale designed for children and adolescents with mental retardation. The purpose of this study was to explore the psychometric properties of the NCBRF in a sample of 330 children and adolescents with autism spectrum disorders (ASDs). Parent and teacher ratings were independently…

Analysis of parent and teacher Developmental Behavior Checklist (DBC) ratings on a combined sample of 1,536 Dutch and Australian children (ages 3-22) with mild to profound intellectual disabilities produced five subscales: Disruptive/Antisocial, Self-Absorbed, Communication Disturbance, Anxiety, and Social Relating. Internal consistency of the…