title: The frequency of restricted and repetitive behaviors in a community sample of 15-month-old infants.
abstract: OBJECTIVE
  To investigate the frequency and pattern of a wide range of restricted and repetitive behaviors in the second year of life.
  
  
  METHODS
  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 movements, sensory interests, routines and rituals, and preoccupations with restricted interests) seen in their children.
  
  
  RESULTS
  The Repetitive Behavior Questionnaire-2 was found to be a reliable measure of these behaviors at this age and revealed a high frequency of particular types of repetitive motor movements in 15 month olds.
  
  
  CONCLUSIONS
  These findings have implications for the early detection of disorders characterized by high levels of restricted and repetitive behaviors, such as autism spectrum disorder.
authors.affiliation: Department of Psychology, Wolfson Research Institute, Durham University, Durham, United Kingdom. B.M.Arnott@durham.ac.uk
authors.forename: Bronia
authors.initials: B
authors.lastname: Arnott
authors.forename: Helen
authors.initials: H
authors.lastname: McConachie
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Meins
authors.forename: Charles
authors.initials: C
authors.lastname: Fernyhough
authors.forename: Ann Le
authors.initials: AL
authors.lastname: Couteur
authors.forename: Michelle
authors.initials: M
authors.lastname: Turner
authors.forename: Kathryn
authors.initials: K
authors.lastname: Parkinson
authors.forename: Lucia
authors.initials: L
authors.lastname: Vittorini
authors.forename: Susan
authors.initials: S
authors.lastname: Leekam
mesh_terms: D015331:Cohort Studies; D003192:Compulsive Behavior / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009035:Mothers; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires