title: A Direct Comparison of Self-Injurious and Stereotyped Motor Behavior Between Preschool-Aged Children With and Without Developmental Delays.
abstract: To compare the prevalence of self-injurious behavior (SIB) and stereotyped motor behavior (STY) of preschool-aged children with developmental delays (DD group) and their peers without developmental delays (TD group) using a standardized caregiver report scale.
  
  
  
  The Repetitive Behavior Scale-Revised was completed by caregivers of children with developmental delays and their peers without developmental delays. Frequency of occurrence and severity ratings for SIB and STY were compared between groups.
  
  
  
  SIB and STY were reported more often and at a greater level of severity in the DD group. Older chronological age was associated with more severe STY in the DD group but not the TD group. Gender was not related to STY or SIB for either group.
  
  
  
  Differences in STY and SIB were evident between preschoolers with and without DD. Findings are discussed from developmental and behavioral psychology perspectives regarding the expression of repetitive behavior in developmentally at-risk pediatric populations.
authors.affiliation: University of Minnesota hoch0048@umn.edu.
authors.forename: John
authors.initials: J
authors.lastname: Hoch
authors.affiliation: University of Minnesota.
authors.forename: Lisa
authors.initials: L
authors.lastname: Spofford
authors.affiliation: University of Minnesota.
authors.forename: Adele
authors.initials: A
authors.lastname: Dimian
authors.affiliation: Mayo Clinic.
authors.forename: Raymond
authors.initials: R
authors.lastname: Tervo
authors.affiliation: University of Wisconsin.
authors.forename: William E
authors.initials: WE
authors.lastname: MacLean
authors.affiliation: University of Minnesota.
authors.forename: Frank J
authors.initials: FJ
authors.lastname: Symons
mesh_terms: D016022:Case-Control Studies; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D002658:Developmental Disabilities / Q000523:psychology*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D015995:Prevalence; D012307:Risk Factors; D016728:Self-Injurious Behavior / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D019956:Stereotypic Movement Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*
keywords: developmental delay; intellectual disability; self-injurious behavior; stereotyped behavior