(1) it must be within the calculus of conscious choice;Ansley Johnson Coale (November 14, 1917 – November 5, 2002), was one of America's foremost demographers.
(2) reduced fertility must be advantageous;
(3) effective fertility control techniques must be available.
Coale, A. J. (1973). The demographic transition. International Union for the Scientific Study of Population. International Population Conference (pp. 53–72).
upg:
Ready, willing and able
Lesthaeghe, R., & Vanderhoeft, C. (1997). Ready, willing and able: A conceptualization of transitions to new behavioral forms (Working Paper, Interface Demography). Vrije Universiteit Brussel.
1 comment:
The language is borrowed from mathematics; the three preconditions or prerequisites are in fact ‘necessary conditions’ for fertility decline (p. 69). A weakness of ‘the idea [sic] of the transition is that it tells us that a high degree of modernization is sufficient to cause a fall of fertility, but does not tell us what degree (if any) of modernization is necessary to produce a fall’ (p. 69). He notes that one or more of the three preconditions can exist in the absence of modernization.
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