66 Chapter 3 FIGURE 1 Moderation effect of self-insight on the relationship between proactive vitality management (PVM) and creative work performance. Hypothesis 3 stated that the link between proactive vitality management and creative work performance will be stronger when there is more support for creativity available in the workplace. While controlling for their main effects, the interaction termof weekly proactive vitality management and social support for creativity was positively related to weekly creative work performance (γ = .11, SE = .034, p < .01), providing initial support for hypothesis 3. Simple slopes tests showed that the relationship between proactive vitality management and creative work performance was stronger when social support for creativity was 1 SD higher than the mean (estimate = .36, SE = .054, p < .001) than when social support for creativity was 1 SD lower than the mean (estimate = .20, SE = .048, p < .01; see Figure 2), further supporting hypothesis 3. In short, the results indicate that both self-insight and support for creativity moderate the proactive vitality management – creative work performance relationship. See Figure 3 for an overview model of all tested relationships.
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