The evolution of Predictive Adaptive Responses in human life history

Daniel Nettle, Willem E Frankenhuis & Ian J Rickard
Many studies have shown that adverse experience in early life is associated with accelerated reproductive timing in humans. There are two different classes of adaptive explanation for such associations. Both can be seen as predictive adaptive responses (PARs). According to external PAR hypotheses, early-life adversity provides a ‘weather forecast’ of the environmental conditions into which the individual will mature, and it is adaptive for the individual to develop an appropriate phenotype for this anticipated environment....