“…The antisocial behavior and psychopathic traits were quantitatively estimated using the APSD, a 20‐item questionnaire based on the Psychopathy Checklist‐revised (PCL‐R; Frick & Hare, 2001; Goodwin, Sellbom, & Salekin, 2015). APSD measures antisocial behavior and psychopathic traits with regards to impulsivity, narcissism, and callousness‐unemotionality, which has been extended to younger adults (Goodwin et al, 2015). Recent studies have shown that APSD is reliable and valid for subjects from different countries (de Wied, van der Baan, Raaijmakers, de Ruiter, & Meeus, 2014; Goulter, Kimonis, & Heller, 2018; Li, Chan, Ang, & Huan, 2017; Pechorro, Maroco, Poiares, & Vieira, 2013), including China (Wang, Deng, Armour, Bi, & Zeng, 2015).…”