“…Children with externalizing problems are at greater risk for a host of other difficulties (Bradshaw, Schaeffer, Petras, & Ialongo, 2010; Reef, Diamantopoulou, van Meurs, Verhulst, & van der Ende, 2011), including substance abuse, school dropout, low life satisfaction, and poor physical health outcomes (Bradshaw et al, 2010; Herrenkohl et al, 2010; Odgers et al, 2008; Reef et al, 2011; Wertz et al, 2018). In particular, children displaying externalizing behaviors are at greater risk of developing internalizing problems compared to their peers without externalizing behaviors (Boots, Wareham, & Weir, 2011; Déry et al, 2017; Gooren, van Lier, Stegge, Terwogt, & Koot, 2011; Klostermann, Connell, & Stormshak, 2016; Moilanen, Shaw, & Maxwell, 2010; Poirier et al, 2019; van Lier & Koot, 2010; van Lier et al, 2012; Wertz et al, 2015). As co-occurring externalizing and internalizing problems have more severe consequences than externalizing problems alone (Yoo, Brown, & Luthar, 2009) and as childhood internalizing problems are notably associated with poorer academic performance and the development of adult psychiatric disorders (Liu, Chen, & Lewis, 2011), it is crucial to understand why children with externalizing problems are at greater risk for developing internalizing problems.…”