RESUMO
One transdiagnostic process that may be critical to depression and suicidal ideation is beliefs about the nature of one's own emotions, both concurrently and longitudinally. In a sample of community adults (n = 143), we assessed personal emotion beliefs about the degree to which one's own emotions are malleable, unique, and last a long time. There were significant associations between stronger views that one's own emotions were fixed, unique to you, and had a longer duration and higher clinical symptom severity, including higher levels of current suicidal ideation, and less adaptive emotion regulation. Mediation analyses using longitudinal data clarified that the differential engagement in emotion regulation, specifically rumination, represented the link tying specific personal emotion beliefs to clinical symptoms and that, in certain cases, the opposite pathway is also significant - differences in clinical symptoms mediated the relationship between specific personal emotion beliefs and emotion regulation (rumination) longitudinally. Additionally, personal emotion beliefs varied based on depression status, as determined using a semi-structured clinical interview. For example, individuals meeting current criteria for Major Depressive Disorder (MDD) held stronger views that their emotions were unique to them compared to individuals with remitted MDD or no history of MDD. The current study's findings highlight the important role of specific personal emotion beliefs in clinical symptoms concurrently and longitudinally and mechanisms in these relationships. These results could guide future research on interventions to promote more adaptive beliefs about emotion to improve clinical outcomes.