title: Development of a screening questionnaire for DSM-5 intermittent explosive disorder (IED-SQ).
abstract: This study was designed to develop and test a screening approach to identify individuals with DSM-5 Intermittent Explosive Disorder (IED), a disorder of recurrent, problematic, impulsive aggression.
  
  
  
  A screening approach to diagnose DSM-5 IED (IED-SQ) was developed by combining items related to life history of aggression and items related to the DSM-5 diagnostic criteria for IED. In study 1, the IED-SQ was studied in 72 adult participants; 33 that met DSM-5 criteria for lifetime IED and 39 that did not. In study 2, the IED-SQ was given to 740 undergraduates at a US university. Measures of aggression and anger expression and anger control were assessed in both studies.
  
  
  
  In study 1, the IED-SQ demonstrated strong concordance with the best estimate diagnoses (Kappa =.80) for lifetime IED by DSM-5 criteria and good test-retest reliability (kappa =0.71). In study 2, the IED-SQ identified 4.3% of the undergraduate sample as meeting DSM-5 criteria for lifetime IED, a rate comparable to that in recent epidemiological studies. Participants identified as meeting DSM-5 criteria for lifetime IED, in both studies, had higher aggression scores, and higher anger expression, and lower anger control scores, compared to participants that did not meet DSM-5 criteria for lifetime IED.
  
  
  
  These data suggest that the IED-SQ is a useful screening tool that can quickly identify the presence of IED by DSM-5 criteria in adults.
authors.affiliation: University of Chicago, Chicago, IL. Electronic address: ecocccaro@bsd.uchicago.edu.
authors.forename: Emil F
authors.initials: EF
authors.lastname: Coccaro
authors.affiliation: Mississippi State University, Starkville, MS.
authors.forename: Mitchell E
authors.initials: ME
authors.lastname: Berman
authors.affiliation: Temple University, Philadelphia, PA.
authors.forename: Michael S
authors.initials: MS
authors.lastname: McCloskey
mesh_terms: D000328:Adult; D000374:Aggression; D000786:Anger; D039721:Diagnostic and Statistical Manual of Mental Disorders; D007174:Disruptive, Impulse Control, and Conduct Disorders / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D011594:Psychometrics; D015203:Reproducibility of Results; D013334:Students / Q000523:psychology; D011795:Surveys and Questionnaires; D014495:Universities; D055815:Young Adult