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 between these measures. The findings generally suggest highly statistically significant yet moderate effect strengths for these various psychometric pro