By approaching human behavior as the product of gradual molding by the process of natural selection to shape optimal responses to information presented by the environment, evolutionary psychology research adopts evolutionary biology as a broad conceptual structure to guide its predictions, empirical investigations, and interpretations of findings (Buss, 1995, 2016). The evolutionary psychology approach has proven useful in application to myriad questions about human behavior ranging across such topics as decision-making processes (Kenrick, Li, & Butner, 2003), aggression (Buss & Shackelford, 1997), sex differences (Buss, 1989; Eagly & Wood, 1999), child development (Bjorklund & Blasi, 2005), personality (Buss, 2009), morality (Wright, 1994), economic behavior (Cosmides & Tooby, 1994), marketing (Saad & Gill, 2000), and the development of culture (Tooby & Cosmides, 1989a, 1989b).