Abstract
Research in the context of the mood-behavior-model (Gendolla in Rev Gen Psychol 4:348–408, 2000) has shown that moods can have an impact on effort mobilization due to congruency effects on demand appraisals. However, the mood research literature suggests that mood may also influence effort mobilization by its impact on appraisals of the instrumentality of success. In a single factor (mood valence: negative vs. neutral vs. positive) between-persons design, participants performed a memory task under conditions of unclear task difficulty. By successfully performing the task, participants could earn the chance to win a monetary reward. As predicted for tasks with unclear difficulty, effort mobilization—assessed as cardiovascular reactivity—increased from negative to positive mood. This effect was mediated by the subjective probability of winning the monetary reward for successful performance. These results demonstrate for the first time that mood can influence effort mobilization via the estimated instrumentality of success.
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Notes
Please note that motivational intensity theory’s predictions about effort mobilization refer to resource (or energy) mobilization and not to perceived effort. This implies that the theory makes no predictions about the relationship of perceived effort and perceived task difficulty. Motivational intensity theory postulates that effort—the amount of energy that individuals invest in behavior—is an outcome of both perceived task difficulty and success importance. Please also note that objective task difficulty should only be a distant determinant of effort mobilization by exerting an impact on subjective task difficulty.
There were 8 women and 2 men in both the negative mood cell and the neutral mood cell and 9 women and 1 man in the positive mood cell.
Cell means and standard errors were as follows: M = 8.32 and SE = 2.11 in the women-negative mood cell, M = 4.18 and SE = 1.39 in the women-neutral mood cell, M = 4.53 and SE = 1.82 in the women-positive mood cell, M = 4.24 and SE = 1.74 in the men-negative mood cell, M = -0.03 and SE = 4.49 in the men-neutral mood cell, and M = 23.97 in the men-positive mood cell.
We also analyzed the number of letters that participants wrote during the mood induction procedure. Mood valence did not significantly affect this measures, F(2, 27) = 0.12, p = .89, MSE = 27136. Post-hoc comparisons indicated that the negative mood cell (M = 550.30, SE = 55.04), the neutral mood cell (M = 533.20, SE = 56.91), and the positive mood cell (M = 569.20, SE = 43.27) did not differ from one another (ps > .87). Furthermore, including the number of written letters as covariate in the analyses of mood change scores resulted in a non-significant effect of the covariate (F ≪ 1) and did virtually not change the results. The correlation between the number of written letters and the baseline adjusted mood change score was low, r = .08, p = .67.
Using bootstrapping instead of the Sobel test—as recommended by Preacher and Hayes (2004) for small samples—did virtually not change the results.
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Richter, M., Gendolla, G.H.E. Mood impact on cardiovascular reactivity when task difficulty is unclear. Motiv Emot 33, 239–248 (2009). https://doi.org/10.1007/s11031-009-9134-4
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DOI: https://doi.org/10.1007/s11031-009-9134-4