The reliability and validity of the Social Responsiveness Scale in a UK general child population.

This is the first UK study to report the reliability, validity, and factor structure of the Social Responsiveness Scale (SRS) in a general population sample. Parents of 500 children (aged 5-8 years) in North East England completed the SRS. Profiles of scores were similar to USA norms, and a single factor structure was identified.

Repetitive behaviours in typically developing 2-year-olds.

Background: Repetitive behaviours are an essential part of the diagnosis of autism but are also commonly seen in typically developing children. The current study investigated the frequency and factor structure of repetitive behaviours in a large community sample of 2-year-olds.

Methods: A new measure, the Repetitive Behaviour Questionnaire (RBQ-2) was completed by 679 parents.