The frequency of restricted and repetitive behaviors in a community sample of 15-month-old infants.

OBJECTIVE To investigate the frequency and pattern of a wide range of restricted and repetitive behaviors in the second year of life. METHOD Parents of 139 15-month-old typically developing infants from a community sample completed the Repetitive Behavior Questionnaire-2, giving information on restricted and repetitive behaviors (e.g., stereotyped motor… CONTINUE READING