Chapter 4 128 Figure 1. Schematic representation of the mediation analysis with Alexithymia (TAS-20) as mediator in the relationship between BPP and Depressive symptoms. Regarding mediation analyses using the TSIA to assess alexithymia, results for all variables can be found in Table 5. In contrast to what was expected, from a simple mediation analysis using ordinary least squares path analysis, higher levels of BPP were not accompanied by higher levels of alexithymia as measured by the TSIA, although the effect only just failed to reach significance (a = 0.098, p = .052). Regarding mediation effects, BPP did not indirectly influence any of the variables through its effect on alexithymia. All bias-corrected bootstrap confidence intervals for the indirect effect based on 10,000 bootstrap samples included zero. There was a near-significant mediation effect of alexithymia between BPP and direct SIB over the previous year (ab = 0.008, p = .061) and a trend to be seen regarding a mediation effect of alexithymia between BPP and depressive symptoms (ab = 0.017, p =.096). For both the TAS-20 and TSIA, we performed subsequent mediation analyses for all alexithymia facets. In all analyses the 95% confidence intervals on 10,000 bootstrap samples included zero, indicating non-significant results.
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