“…Given that this study is, to our knowledge, the first study that integrates an outcomeoriented and process-oriented classification system of emotion regulation strategies, and because emotion regulation is characterized by emotion specificity (e.g., specific emotions elicit distinct functional relations between an individual and the environment; Zeman et al, 2007), this study focuses on a specific emotion, rather than a combination of emotions and/or general negative affect. We selected the negative emotion of anger, because anger is relevant not only for externalizing, but also for internalizing problems (Harmon et al, 2019;Otterpohl et al, 2016;Zeman et al, 2002). In preadolescence, high levels of anger rumination are, for example, associated with elevations of both depressive and aggressive symptoms, independently of the levels of sadness regulation (Harmon et al, 2019).…”