Early traumatic experiences in those at clinical high risk for psychosis.
OBJECTIVE
Several lines of evidence suggest a possible association between a history of trauma in childhood and later psychosis or psychotic-like experiences. The purpose of this study was to determine the extent of childhood trauma and bullying in young people at clinical high risk (CHR) of developing psychosis.


METHODS
The sample consisted of 360 individuals who were at CHR of developing psychosis and 180 age- and gender-matched healthy controls. All participants were assessed on past trauma and bullying. The CHR participants were also assessed on a range of psychopathology and functioning.


RESULTS
Individuals at CHR reported significantly more trauma and bullying than healthy controls. Those who had experienced past trauma and bullying were more likely to have increased levels of depression and anxiety and a poorer sense of self.


CONCLUSIONS
These results offer preliminary support for an association between a history of trauma and later subthreshold symptoms.
Department of Psychiatry, University of Calgary, Calgary, Alberta, Canada. john.mulligan@gmw.nhs.uk
Jean
J
Addington
Jacqueline
J
Stowkowy
Kristin S
KS
Cadenhead
Barbara A
BA
Cornblatt
Thomas H
TH
McGlashan
Diana O
DO
Perkins
Larry J
LJ
Seidman
Ming T
MT
Tsuang
Elaine F
EF
Walker
Scott W
SW
Woods
Tyrone D
TD
Cannon
D000328:Adult; D054523:Adult Survivors of Child Abuse / Q000523:psychology*; D001007:Anxiety / Q000150:complications / Q000523:psychology; D058445:Bullying / Q000523:psychology; D016022:Case-Control Studies; D003863:Depression / Q000150:complications / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D062706:Prodromal Symptoms; D011618:Psychotic Disorders / Q000150:complications / Q000175:diagnosis / Q000523:psychology*; D012307:Risk Factors; D012649:Self Concept
clinical high risk; prodrome; psychosis; risk; trauma