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Measuring the Reliability of Picture Story Exercises like the TAT

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Gruber, Nicole ; Kreuzpointner, Ludwig
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Date of publication of this fulltext: 05 Nov 2013 16:41


As frequently reported, psychometric assessments on Picture Story Exercises, especially variations of the Thematic Apperception Test, mostly reveal inadequate scores for internal consistency. We demonstrate that the reason for this apparent shortcoming is not caused by the coding system itself but from the incorrect use of internal consistency coefficients, especially Cronbach’s α. This problem ...


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