“…In contrast, approach-sociability differentiates between internalizing and externalizing, whereby low levels of approach-sociability predict fearfulness, social withdrawal, behavioural avoidance, and correspondingly high internalizing symptoms (Leve, Kim, & Pears, 2005; Prior, Smart, Sanson, & Oberklaid, 2000b; Putnam & Stifter, 2002; Sanson et al, 2004; Young Mun et al, 2001), but act as a protective factor for the development of externalizing problems (Smart & Sanson, 2005; Schwartz, Snidman, & Kagan, 1996). Similarly, the inverse may also be true, as high levels of approach-sociability have been found to predict fearlessness, impulsivity, and risk-taking, and thus act as a risk factor for externalizing problems (e.g., Degnan et al, 2011; Hane, Fox, Henderson, & Marshall, 2008; Stifter, Putnam, & Jahromi, 2008).…”