Moderated regression analyses
REGRESSION, INTERACTION
To investigate the second hypothesis that using Facebook compared to reading magazines leads to lower stress recovery in individuals with tendency towards a problematic social-networks use, we used a moderated regression analysis for analyzing interaction effects between the experimental conditions and the symptom severity on perceived stress. The experimental conditions (EG1 and EG2), symptom severity, and the interaction term of both were used as predictors. Stress perception at t2 was used as dependent variable. The experimental conditions (Interaction effects. The figure shows the simple slope analysis of the moderated regression analysis using the experimental conditions (Experimental group 1 and Experimental group 2), symptom severity, and their interactions as predictors and stress perception at t2 as dependent variable. Statistics of the coefficients of the moderated regression analyses predicting subjectively perceived stress at time point 2 by using two different experimental conditions each.As additional analysis to further specify interaction effects, we investigated if the effect of using Facebook compared to waiting as form of recovery without any distractor on stress perception was affected by the tendency towards a problematic social-networks use as well. The experimental conditions (EG1 and CG1), symptom severity, and the interaction term were used, stress perception at t2 was the dependent variables. The experimental conditions (Interaction effects. The figure shows the simple slope analysis of the moderated regression analysis using the experimental conditions (Experimental group 1 and Control group 1), symptom severity, and their interactions as predictors and stress perception at t2 as dependent variable. *As additional analyses we controlled the relationship between symptom severity and stress perception at the three measurement points for the three groups with stress induction (EG1, EG2, CG1). The bivariate correlation only showed a significant relationship between symptom severity and stress perception at t0 (