Fertility and Fecundity — 2014 Paper I
Fertility and Fecundity
Model Answer
VAID ICSApproach
- Demand of Question: Distinguish biological reproductive capacity (fecundity) from actual reproductive performance (fertility), then show determinants and measures.
- Structuring the Response: Define both -> biological determinants of fecundity -> demographic measures of fertility -> Davis-Blake/Bongaarts proximate determinants -> anthropological cultural variables -> clear distinction.
- Key Dimensions to Cover: Fecundity vs fertility; ASFR/TFR; Davis & Blake (1956); Bongaarts (1978); marriage, contraception, abortion, postpartum infecundability; breastfeeding, kinship, son preference, education.
Model Answer
Introduction
Fecundity and fertility are related but analytically distinct demographic concepts. Fecundity is the biological capacity of an individual or couple to reproduce, whereas fertility is actual reproductive performance, usually measured through live births.
Body
Fecundity is influenced by age, sexual maturation, health, nutrition, genetic factors, ovulatory function, semen quality and reproductive pathology. It sets the biological upper limit of reproduction but is difficult to measure directly.
Fertility is observable and is shaped by both biology and society. Common measures include crude birth rate, general fertility rate, age-specific fertility rate and total fertility rate. Davis and Blake (1956) identified “intermediate variables” connecting social structure to fertility; Bongaarts (1978) later highlighted proximate determinants such as marriage or sexual exposure, contraception, induced abortion and postpartum infecundability.
Anthropology adds cultural context: age at marriage, breastfeeding, postpartum taboos, residence, kinship, son preference, women’s education, labour participation and reproductive norms modify actual fertility.
Conclusion
Therefore, a highly fecund population need not display high fertility. Fecundity denotes reproductive potential; fertility records realised reproduction under specific biological, cultural and socio-economic conditions.
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