“…As a functionally coherent disease defense mechanism, the behavioral immune system can generate a series of consistent changes in down-stream perceptual, affective, cognitive, and behavioral processes (Schaller and Neuberg, 2012; Schaller et al, 2015; Murray and Schaller, 2016). Although previous studies have investigated the ingroup derogation phenomenon in East Asian cultures by using many different tasks, such as the face perception task (Jahoda et al, 1972; Zhao et al, 2012; Wu et al, 2016), emotion judgment task (Wu et al, 2016; Xie et al, 2019), memory task (Zhao et al, 2012), trait rating task (Ma-Kellams et al, 2011; Liu et al, 2015), attribution task (Hewstone and Ward, 1985), cooperation and allocation task (Wu et al, 2015, 2016; Zuo et al, 2018; Dang et al, 2019), etc., the current study had only examined the effects of infectious disease on ingroup derogation attitude in the domain of cooperation. If ingroup derogation is indeed an evolutionarily based disease defense mechanism, its activation should result in other functionally related changes, such as altered attention and avoidance response to threat-related targets (e.g., Miller and Maner, 2011).…”