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Updated: Aug 18, 2026

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
Published on: September 16, 2021
Fertility transition, conscious choice, and numeracy
1Population Studies Center, University of Pennsylvania, Philadelphia 19104.
Abstract:
One of the preconditions of the fertility transition, as stated by A.J. Coale, is that reproductive decisions must be within the calculus of conscious choice. It is suggested that the change in mentality which leads to family limitation includes "numeracy about children," a clear notion of what family size ought to be and the awareness of individuals of where they stand with respect to the norm. The article explores the hypothesis that numeracy about children appeared historically in various times and places, and that the conceptualization of family size was a necessary condition for adopting family limitation.
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