In recent decades, the most common means by which couples regulate fertility have changed from methods requiring control or cooperation by men, e.g., condoms, withdrawal and periodic abstinence, to those for which women bear primary responsibility e.g., virtually all-reversible modern methods.

Governmental efforts towards fertility reduction often face a dilemma: babies who are planners' worry are also a parent's hope and joy (Mandelbaum 1974:110). The beliefs of the people on this subject and what planners believe ought to be done may on occasion diverge substantially.

Fertility behaviour includes not only biological but also social reproduction, involving a complex network of institutions.