Meta-analyses of the reliability of Type A behaviour measures

Abstract
The accuracy of assessments of Type A behaviour made using different methods is the focus of active debate. Presented here are preliminary meta-analyses regarding: (a) internal consistency, test-retest and parallel forms reliabilities of the most frequently used questionnaire (Jenkins Activity Survey); (b) inter-rater and test-retest reliabilities of the most prospectively valid method (Friedman Structured Interview); and (c) correlations and percentage classification agreement betweem these measures. The findings generally suggest highly statistically significant yet moderate effect strengths for these various psychometric properties.

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