The purpose of this study is to determine whether computer bias modification for interpretation bias (CBM-I) is effective in the reduction of suicidal ideation in substance use disorders.
Eighty-eight adult inpatients completing residential treatment in the Addictions Services at the Centre for Addiction and Mental Health (CAMH) will be randomized to receive CBM-I daily for one week, adjunct to the residential psychosocial treatment or to an assessment-only control condition. Participants will complete clinical measures consisting of interviews and questionnaires measuring suicidal ideation, hopelessness, depression, negative affect, and interpretation biases before, during and after treatment.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
88
Training paragraphs describe scenarios designed to be ambiguous at the outset and to resolve in a positive direction, with the intention of establishing a learning contingency between the ambiguity at the beginning of the scenario and the positive resolution that becomes clear towards the end of the statement.
Centre for Addiction and Mental Health
Toronto, Ontario, Canada
Columbia-Suicide Severity Rating Scale, Screen Version (C-SSRS)
This scale quantifies the severity of suicidal ideation and behaviour.
Time frame: Seven days
Beck Hopelessness Scale (BHS)
This questionnaire assesses thoughts and emotions associated with the future.
Time frame: Seven days
Beck Depression Inventory II (BDI-II)
This questionnaire assesses severity of depressive symptoms and cognitions.
Time frame: Seven days
Positive and Negative Affect Schedule (PANAS)
This questionnaire assesses current positive and negative mood
Time frame: Seven days
Scrambled Sentences Tests
This computer test will be used as an implicit measure of negative interpretation bias.
Time frame: Seven days
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