117 Creating A Creative State of Mind loaded on one overall latent factor (Δχ² = 879.80, Δdf = 6, p < .001). Taken together, these results show that, besides theoretically, proactive vitality management can also empirically be distinguished from daily mindfulness. Hypotheses Testing Hypothesis 1 stated that daily proactive vitality management is positively related to daily mindfulness. Results of the multilevel analyses showed that participants indeed experienced more mindfulness on days that they proactively managed their vitality (γ = .68, SE = .07, p < .01). These findings provide support for hypothesis 1. We proceeded by testing hypothesis 2, which stated that daily mindfulness relates positively to daily creative performance. To correct for possible effects of the number of ideas (fluency) on the originality ratings of the ideas, we controlled for fluency in the analyses with originality as the outcome variable. Daily mindfulness was not significantly related to the number of ideas (fluency) on the daily brainstorming task (γ = .07, SE = .16, p = .666) but it was positively and significantly related to the originality of those ideas (γ = .24, SE = .08, p < .01; see Table 2). Moreover, the findings indicated that mindfulness explained additional variance in originality over and above the variance explained by work engagement. Overall, these findings provide partial support for hypothesis 2. Finally, we used the Monte Carlo method (Preacher & Selig, 2010) to examine the hypothesized role of mindfulness as an explanatory mechanism underlying the link between proactive vitality management and creative performance. Significant indirect effects are indicated by confidence intervals that do not include zero. In line with the former findings, the results showed an insignificant indirect effect of proactive vitality management on fluency through mindfulness (-.07, CI 95% [-.20, .05]) and a positive indirect effect of proactive vitality management on originality through mindfulness (.11, CI 95% [.01, .19]). These findings provide partial support for hypothesis 3. Overall, the results show that proactively managing physical and mental energy for work relates positively to daily states of mindfulness, which related positively to the originality of ideas. For an overview of the results from Study 1, see Figure 1. 5
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