Early adversity and the development of explore-exploit tradeoffs

Childhood adversity can have wide-ranging and long-lasting effects on later life. But what are the mechanisms that are responsible for these effects? This article brings together the cognitive science literature on explore–exploit tradeoffs, the empirical literature on early adversity, and the literature in evolutionary biology on ‘life history’ to explain how early experience influences later life. We propose one potential mechanism: early experiences influence ‘hyperparameters’ that determine the balance between exploration and exploitation. Adversity might ac- celerate a shift from exploration to exploitation, with broad and enduring effects on the adult brain and mind. These effects may be produced by life-history adap- tations that use early experience to tailor development and learning to the likely future states of an organism and its environment.