Title |
Psychometrics of the Personal Questionnaire: A Client-Generated Outcome Measure
|
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Published in |
Psychological Assessment, March 2016
|
DOI | 10.1037/pas0000174 |
Pubmed ID | |
Authors |
Robert Elliott, John Wagner, Célia M. D. Sales, Brian Rodgers, Paula Alves, Maria J. Café |
Abstract |
We present a range of evidence for the reliability and validity of data generated by the Personal Questionnaire (PQ), a client-generated individualized outcome measure, using 5 data sets from 3 countries. Overall pretherapy mean internal consistency (alpha) across clients was .80, and within-client alphas averaged .77; clients typically had 1 or 2 items that did not vary with the other items. Analyses of temporal structure indicated high levels of between-clients variance (58%), moderate pretherapy test-retest correlation (r = .57), and high session-to-session Lag-1 autocorrelation (.82). Scores on the PQ provided clear evidence of convergence with a range of outcome measures (within-client r = .41). Mean pre-post effects were large (d = 1.25). The results support a revised caseness cutoff of 3.25 and a reliable change index interval of 1.67. We conclude that PQ data meet criteria for evidence-based, norm-referenced measurement of client psychological distress for supporting psychotherapy practice and research. (PsycINFO Database Record |
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Geographical breakdown
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United Kingdom | 3 | 75% |
Unknown | 1 | 25% |
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Type | Count | As % |
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Members of the public | 2 | 50% |
Mendeley readers
Geographical breakdown
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Spain | 1 | 1% |
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Unknown | 87 | 98% |
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Student > Ph. D. Student | 11 | 12% |
Student > Doctoral Student | 10 | 11% |
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Professor > Associate Professor | 6 | 7% |
Other | 15 | 17% |
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Unknown | 31 | 35% |