title: The baby and infant screen for children with autism traits-part 2: The development of age-based cutoffs.
abstract: OBJECTIVE
  To create age-based scoring procedures for the BISCUIT-Part 2, an assessment measure of comorbid psychopathology in infants and toddlers aged 17-37 months.
  
  
  METHODS
  The standard deviation from the mean method was used to develop separate age-based cutoffs for those with an autism spectrum disorder (ASD) and those with non-ASD related developmental delays, using a sample of 2867 infants and toddlers and their parents.
  
  
  RESULTS
  As age increased in those with ASD, higher cutoff scores were indicated. Less variation was seen in the cutoff scores established for those with non-ASD related delays.
  
  
  CONCLUSIONS
  The findings suggest that as children with ASD grow older, symptoms of comorbidity become more prevalent and easier to detect. The implications of these results, as well as possible areas of future research, are discussed.
authors.affiliation: a Department of Psychology , Louisiana State University , Baton Rouge , LA , USA.
authors.forename: Max
authors.initials: M
authors.lastname: Horovitz
authors.affiliation: a Department of Psychology , Louisiana State University , Baton Rouge , LA , USA.
authors.forename: Johnny L
authors.initials: JL
authors.lastname: Matson
mesh_terms: D001321:Autistic Disorder / Q000175:diagnosis* / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D002658:Developmental Disabilities / Q000175:diagnosis* / Q000453:epidemiology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male
keywords: ASD; BISCUIT; autism; comorbid psychopathology; comorbidity; psychometrics