Abstract
Research was conducted to investigate the potential impact of mood checklist (MAACL) pretesting upon the Velten experimental mood induction procedure. Multivariate analyses (MANOVA and ANCOVA) of the three MAACL subscales (Depression, Anxiety, and Hostility) suggest that variance unique to Anxiety, and that shared between Anxiety and the other subscales, is affected by pretesting, including both a main effect and a pretesting X Velten interaction. In contrast, the Velten manipulation impacted only variance unique to Depression and variance shared between Depression and the other two subscales. Apart from their significance for mood induction research, these findings provide rare evidence for the discrimination validity of the MAAACL subscales. Implications of these findings are discussed along with methodological suggestions for future studies.
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