title: Sleep disruption is related to poor response inhibition in individuals with obsessive-compulsive and repetitive negative thought symptoms.
abstract: OBJECTIVE
  Obsessive-compulsive (OC) symptoms and repetitive negative thinking (RNT) are associated with poor inhibitory control. Sleep disruptions may partially mediate these relations and/or act as a "second hit" to individuals with OC symptoms and RNT. Models including habitual (past month) hours slept and bedtimes were tested.
  
  
  METHODS
  We employed a go/no-go task that allowed us to examine the relation between sleep and inhibition with various task contingencies. Sixty-seven unselected individuals were recruited from the participant pool at a public university.
  
  
  RESULTS
  Bias-corrected bootstrap estimates did not show that sleep disruption mediated the relation between OC symptoms and response inhibition nor the relation between RNT and response inhibition. Multiple linear regression analyses found significant interactions between hours slept and OC symptom severity and between RNT and hours slept to predict poor response inhibition. Hours slept significantly negatively predicted commission errors when OC symptoms and RNT levels were relatively heightened but not when OC symptoms and RNT levels were relatively low. These effects were present in blocks where task contingencies were designed to shape a no-go bias. No significant relations were found with habitual bedtimes.
  
  
  CONCLUSIONS
  The cross-sectional study design precludes testing the temporal precedence of symptoms in the "second hit" model. The unselected sample also limits generalization to clinical samples.
  
  
  CONCLUSIONS
  These findings support a "second hit" model of interaction between sleep disruption and perseverative thoughts and behaviors. Further research on the mechanisms of the relation between sleep disruption and perseverative thought symptoms (OC and RNT) is warranted.
authors.affiliation: Binghamton University, Department of Psychology, USA. Electronic address: jnota1@binghamton.edu.
authors.forename: Jacob A
authors.initials: JA
authors.lastname: Nota
authors.affiliation: Binghamton University, Department of Psychology, USA.
authors.forename: Jessica R
authors.initials: JR
authors.lastname: Schubert
authors.affiliation: Binghamton University, Department of Psychology, USA.
authors.forename: Meredith E
authors.initials: ME
authors.lastname: Coles
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007266:Inhibition, Psychological; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000503:physiopathology*; D011597:Psychomotor Performance / Q000502:physiology*; D012893:Sleep Wake Disorders / Q000503:physiopathology*; D013850:Thinking / Q000502:physiology*; D055815:Young Adult
keywords: Bedtimes; Obsessive–compulsive; Repetitive negative thinking; Response inhibition; Sleep