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Discussion

Net Reproduction Rate (NRR) is a measure of

  • A.Annual excess of births over deaths
  • B.Annual rate at which women are replacing themselves on the basis of prevailing fertility and mortality assuming no migration
  • C.Decennial growth rate of population
  • D.Per generation growth rate assuming current age specific fertility and mortality and no net migration

Answer: D

The net reproduction rate is the per-generation growth rate when current age-specific fertility and mortality continue and there is no net migration. It is the average number of daughters a newborn girl will bear during her life, allowing for the chance she dies before the end of the childbearing years, so a value of one means the generation just replaces itself.

An annual excess of births over deaths is the rate of natural increase, a decennial growth rate is a different measure again, and the annual rate at which women replace themselves describes a yearly rate when the NRR is a per-generation one.

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