The depression gender gap: a view through a biocultural filter.

That women, compared with men, are more prone to become "depressed" has been known for decades. The etiology of the depression gender gap has been a source of much discussion, with the bulk occurring within the medical model. As a complement to--rather than a competitor with--such discussion, the depression gender gap is analyzed through a biocultural lens wherein the evolutionary history of Homo sapiens becomes part of the frame of reference. Given that a "constant" is difficult to explain by the use of "variables," the very consistent 2:1 gender ratio of female to male (rates of) depression is difficult to explain by referring to cultural parameters, which are variable. It is more parsimonious to suggest that a constant becomes a better candidate to explain another constant. The constant used in this exercise is some portion of the genetic package that subtends the species Homo sapiens; in other words, everyone on the planet is human. The authors argue that the basal dynamic of H. Fisher's (1983) sex contract is a useful analytical tool in examining the contemporary gender gap in depression. They suggest that the germane clause of the sex contract is the use of psychological immobilization as an effective social instrument.