Persistent negative self-referent thinking in the context of depression: examining the role of temperament and emotion regulation.

Cognitive models of depression posit that persistent negative self-referent thinking (PNSRT) is an important vulnerability factor for depressive symptoms. The mechanisms involved are still understudied, especially in adolescence. PNSRT has been assessed by a behavioural decision-making task, namely the emotional reversal learning task (ERLT). Within the ERLT, PNSRT is operationalised as the learning rate for negative self-reference. The first aim of the current study is to examine the association between PNSRT and depressive symptoms at baseline and follow-up. Second, the current study investigated associations of PNSRT with temperamental and emotion regulation variables. We found no significant effect between PNSRT and baseline depressive symptoms, although the small effect size pointed in the expected direction. No significant prospective effect was found. Additionally, adolescents with greater capacity for response inhibition and better attentional control exhibited less PNSRT. No other significant associations were found with other temperamental dimensions or emotion regulation variables. In conclusion, while the small effect size of the cross-sectional association between PNSRT and depressive symptoms points in the expected direction, no significant evidence was found that PNSRT acts as either a concomitant or precursor to depressive symptomatology. However, the current study did find a relation between low effortful control and PNSRT.