title: Cognition and Behaviour in Sotos Syndrome: A Systematic Review.
abstract: BACKGROUND
  Research investigating cognition and behaviour in Sotos syndrome has been sporadic and to date, there is no published overview of study findings.
  
  
  METHODS
  A systematic review of all published literature (1964-2015) presenting empirical data on cognition and behaviour in Sotos syndrome. Thirty four journal articles met inclusion criteria. Within this literature, data relating to cognition and/or behaviour in 247 individuals with a diagnosis of Sotos syndrome were reported. Ten papers reported group data on cognition and/or behaviour. The remaining papers employed a case study design.
  
  
  RESULTS
  Intelligence quotient (IQ) scores were reported in twenty five studies. Intellectual disability (IQ < 70) or borderline intellectual functioning (IQ 70-84) was present in the vast majority of individuals with Sotos syndrome. Seven studies reported performance on subscales of intelligence tests. Data from these studies indicate that verbal IQ scores are consistently higher than performance IQ scores. Fourteen papers provided data on behavioural features of individuals with Sotos syndrome. Key themes that emerged in the behavioural literature were overlap with ASD, ADHD, anxiety and high prevalence of aggression/tantrums.
  
  
  CONCLUSIONS
  Although a range of studies have provided insight into cognition and behaviour in Sotos syndrome, specific profiles have not yet been fully specified. Recommendations for future research are provided.
authors.affiliation: Department of Psychology, University of Sheffield, Western Bank, Sheffield, United Kingdom.
authors.forename: Chloe
authors.initials: C
authors.lastname: Lane
authors.affiliation: Department of Psychology, University of Sheffield, Western Bank, Sheffield, United Kingdom.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Milne
authors.affiliation: Department of Psychology, University of Sheffield, Western Bank, Sheffield, United Kingdom.
authors.forename: Megan
authors.initials: M
authors.lastname: Freeth
mesh_terms: D000328:Adult; D000374:Aggression; D001007:Anxiety / Q000150:complications / Q000175:diagnosis; D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications / Q000175:diagnosis; D001519:Behavior; D002648:Child; D003071:Cognition; D006801:Humans; D007361:Intelligence Tests; D007802:Language; D008137:Longitudinal Studies; D058495:Sotos Syndrome / Q000150:complications / Q000175:diagnosis*