5 245 THE EFFECT OF EXPECTATIONS IN AN APPLIED GAME In-game Play Behaviours Trailer-condition did not significantly predict any of the in-game play behaviours (see Table 5 and Table 6). The interaction between trailer-condition and motivation to change did not have a significant effect on any of the in-game play behaviours, with the exception of fear attempt (see Table 5). A significant positive effect of motivation to change on fear attempts was found in the MH-condition, b = 0.03, 95%CI [0.01;0.05], p = .025, and a significant negative effect was found in the ENT-condition, b = -0.03, 95%CI [-0.05;-0.00], p = .013. Finally, the interaction between trailer-condition and anxiety symptoms did not have a significant effect on any of the in-game play behaviours (see Table 5 and Table 6). Change in State Anxiety and Arousal Participants in both trailer-conditions reported increased state-anxiety (t(56) = -4.85, p = .001; 95%CI mean difference [-0.54;-0.25]), and increased arousal (t(56) = -3.13, p = .002; 95%CI mean difference [-0.82;-0.23]) after playing MindLight. There were no significant differences on state-anxiety and arousal at post-test between the two trailer-conditions (see Table 7). The interactions between trailer-condition and motivation to change or anxiety symptoms did not have a significant effect on state-anxiety and arousal at post-test (see Table 7). Exploratory Analyses Overall GSR percent change during gameplay was significantly higher than zero with a mean difference of 32.92 (t(52) = 4.68, p = .002; 95%CI mean difference [19.77;47.54]). Trailer-condition did not significantly predict overall GSR percent change during gameplay, nor did the interactions between trailer-condition and motivation to change or anxiety symptoms (see Table 8). For the Repeated Measures ANOVA, Mauchly’s Test of Sphericity indicated that the assumption of sphericity had been violated, χ2(14) = 117.92, p < .001, and therefore a Greenhouse-Geisser (ε = .53) correction was used. There was no significant effect of time (F(2.67, 133.62) = 2.11, p = .109, η2 p = .04) and no significant interaction effect between time and experimental condition (F(2.67, 133.62) = 0.16, p = 903. η2 p = .00). See Table 9 for the GSR means per timebin and separately for experimental condition, including post-hoc (bootstrapped) independent t-tests to examine the differences between conditions per timebin (all non-significant). Within-subjects polynomial contrasts, however, showed a significant quadratic trend for GSR (F(1, 50) = 6.67, p = .013, η2 p = .12), and this trend did
RkJQdWJsaXNoZXIy MTk4NDMw