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Test–retest stability, convergent validity, and sensitivity to change for the Goal‐Based Outcome tool for adolescents: Analysis of data from a randomized controlled trial
Author(s) -
Duncan Charlie,
Cooper Mick,
Saxon David
Publication year - 2023
Publication title -
journal of clinical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.124
H-Index - 119
eISSN - 1097-4679
pISSN - 0021-9762
DOI - 10.1002/jclp.23422
Subject(s) - nomothetic and idiographic , nomothetic , psychology , clinical psychology , convergent validity , concurrent validity , external validity , randomized controlled trial , internal validity , intervention (counseling) , incremental validity , test (biology) , population , psychometrics , test validity , social psychology , psychiatry , statistics , medicine , paleontology , surgery , mathematics , environmental health , internal consistency , biology
Objective(s) To examine the psychometric properties of the idiographic Goal‐Based Outcome (GBO) tool for young people: test–retest stability, convergent validity, and sensitivity to an intervention. Methods This measure validation study used data from a randomized controlled trial of school‐based humanistic counseling. We used multilevel analyses to assess test–retest stability, convergent validity of the GBO tool against nomothetic measures of mental wellbeing, and sensitivity to an intervention. Results The GBO tool showed acceptable stability over a 6–24 week period; moderate convergent validity with nomothetic measures of mental well‐being, self‐esteem, and depression; and greater sensitivity to an intervention than a measure of psychological distress. Conclusions The GBO tool shows evidence of having acceptable psychometric properties and is suitable for monitoring change on individual goals. It may also have the capacity to function as a population‐level indicator of outcomes in conjunction with the use of other measures of mental health and wellbeing.