title: Early and Concurrent Features of ADHD and Sensory Over-Responsivity Symptom Clusters.
abstract: OBJECTIVE
  This study aimed to characterize clusters of children based on ADHD and sensory over-responsivity (SOR) symptoms, and to compare their markers.
  
  
  METHODS
  Parents of 922 infants completed the Infant-Toddler Social and Emotional Assessment (ITSEA) Sensory Sensitivity, Attention, and Activity/Impulsivity scales at three time points during early childhood and the Child Behavior Checklist (CBCL) and SensOR inventory during elementary school age.
  
  
  RESULTS
  Four school-age clusters emerged from the CBCL ADHD and SensOR scores: (a) elevated SOR symptoms only ( n = 35); (b) elevated ADHD symptoms only ( n = 38); (c) elevated ADHD and SOR symptoms (ADHD + S, n = 35); and (d) low ADHD and SOR symptoms ( n = 814). The SOR and ADHD + S clusters had higher early Sensitivity scores than the ADHD and Low clusters. The ADHD and ADHD + S clusters differed from the SOR and Low clusters in their early Attention and Activity/Impulsivity scores.
  
  
  CONCLUSIONS
  SOR and ADHD symptoms occur independently and consistently over time.
authors.affiliation: 1 University of Haifa, Israel.|2 University of Massachusetts, Boston, MA, USA.
authors.forename: Ayelet
authors.initials: A
authors.lastname: Ben-Sasson
authors.affiliation: 2 University of Massachusetts, Boston, MA, USA.
authors.forename: Timothy W
authors.initials: TW
authors.lastname: Soto
authors.affiliation: 2 University of Massachusetts, Boston, MA, USA.
authors.forename: Amy E
authors.initials: AE
authors.lastname: Heberle
authors.affiliation: 2 University of Massachusetts, Boston, MA, USA.
authors.forename: Alice S
authors.initials: AS
authors.lastname: Carter
authors.affiliation: 3 University of Connecticut, Farmington, CT, USA.
authors.forename: Margaret J
authors.initials: MJ
authors.lastname: Briggs-Gowan
mesh_terms: D000293:Adolescent; D001288:Attention / Q000502:physiology; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007175:Impulsive Behavior / Q000502:physiology; D007223:Infant; D008297:Male; D010290:Parents / Q000523:psychology; D011569:Psychiatric Status Rating Scales; D011597:Psychomotor Performance / Q000502:physiology; D013577:Syndrome
keywords: ADHD; attention; children; cluster analysis; sensory over-responsivity
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