460 BUSS evolved solutions to the adaptive problems our species has faced over millions of
years. Because personality psychology is dedicated to studying human nature in all of its …

The idea that individual differences in behavior and physiology can be partly understood by
linking them to a fast-slow continuum of life history strategies has become popular in the …

The five-factor model (FFM) of personality variation has been replicated across a range of
human societies, suggesting the FFM is a human universal. However, most studies of the …

This chapter provides an overview of life history theory (LHT). LHT conceptualizes specific
allocation tradeoffs in terms of three broad, fundamental trade‐offs: the present‐future …

Understanding how having children influences parents' subjective well-being (“happiness”)
has great potential to explain fertility behavior. We study parental happiness trajectories …

Most people who are regular consumers of psychoactive drugs are not drug addicts, nor will
they ever become addicts. In neurobiological theories, non-addictive drug consumption is …

Mental disorders arise from neural and psychological mechanisms that have been built and
shaped by natural selection across our evolutionary history. Looking at psychopathology …

The covariance structure of personality traits derived from statistical models (for example,
Big Five) is often assumed to be a human universal. Cross-cultural studies have challenged …

The genetic architecture of human reproductive behavior—age at first birth (AFB) and
number of children ever born (NEB)—has a strong relationship with fitness, human …

The finding that females hold more pro-environmental attitudes and engage in more
conservation behavior, relative to males, is one of the most robust effects in the field of …