title: Construct validity of a proposed new diagnostic entity: Acute Suicidal Affective Disturbance (ASAD).
abstract: BACKGROUND
  The current study presents initial support for the construct validity of Acute Suicidal Affective Disturbance (ASAD), a clinical entity consisting of acute suicide risk and several related features.
  
  
  METHODS
  Participants (N=195) were university students who were recruited for a history of suicide attempt(s), history of suicidal ideation, or no history of suicide attempts or suicidal ideation. Participants completed study measures online.
  
  
  RESULTS
  Factor analytic results indicated a one factor solution for a lifetime measure of ASAD symptoms. The measure demonstrated strong convergent and divergent validity with common correlates of suicide-related outcomes and incremental predictive validity, as lifetime occurrence of ASAD symptoms predicted number of past suicide attempts above and beyond a host of suicide risk factors. Lifetime ASAD symptoms differed between those with multiple suicide attempts, those with a single attempt, and participants without a history of attempts, as well as between participants with a history of both suicidal ideation and attempts and those with a history of suicidal ideation but not suicide attempts.
  
  
  CONCLUSIONS
  The cross-sectional research design limits the ability to infer causation between ASAD symptoms and suicidal behavior. Only past ASAD symptoms (not current symptoms) were measured.
  
  
  CONCLUSIONS
  ASAD appears to be a unified clinical entity that characterizes acute suicide risk which may assist clinicians in determining a client's potential for death by suicide.
authors.affiliation: Oklahoma State University, 116 North Murray, Stillwater, OK 74078, USA. Electronic address: raymopt@okstate.edu.
authors.forename: Raymond P
authors.initials: RP
authors.lastname: Tucker
authors.affiliation: Florida State University, Department of Psychology, 1107 West Call Street, Tallahassee, FL 32306-4301, USA.
authors.forename: Matt S
authors.initials: MS
authors.lastname: Michaels
authors.affiliation: Florida State University, Department of Psychology, 1107 West Call Street, Tallahassee, FL 32306-4301, USA.
authors.forename: Megan L
authors.initials: ML
authors.lastname: Rogers
authors.affiliation: Oklahoma State University, 116 North Murray, Stillwater, OK 74078, USA.
authors.forename: LaRicka R
authors.initials: LR
authors.lastname: Wingate
authors.affiliation: Florida State University, Department of Psychology, 1107 West Call Street, Tallahassee, FL 32306-4301, USA.
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Joiner
mesh_terms: D000293:Adolescent; D000328:Adult; D000342:Affective Symptoms / Q000175:diagnosis* / Q000523:psychology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D059020:Suicidal Ideation; D013405:Suicide / Q000523:psychology*; D013406:Suicide, Attempted / Q000523:psychology*; D063189:Symptom Assessment; D055815:Young Adult
keywords: Acute Suicidal Affective Disturbance; Acute Suicidal Affective Disturbance Inventory-Lifetime (ASADI-L); Risk factor; Suicidal ideation; Suicide attempt