“…Two decades ago, Bowlby (1969/1982) attributed the evolutionary origins of attachment to predatory selection pressure, a view that is still widely held by researchers of human development and by authors of texts of child development (e.g., Sroufe & Cooper, 1988). In contrast, from the perspective of contemporary ethology, the most plausible ultimate explanation of the origins of attachment is that behaviors denoting attachment increase the inclusive fitness of the individual whose mode of reproduction is characterized by intricate patterns of parental investment (Petrovich & Gewirtz, 1985; Petrovich, Gewirtz, & Hess, 1986).…”