The aims of this article are:(i) to provide a quantitative overview of sex differences in human
psychological attributes; and (ii) to consider evidence for their possible evolutionary origins …

The authors review a range of evidence concerning the motivational underpinnings of anger
as an affect, with particular reference to the relationship between anger and anxiety or fear …

The word 'addiction'these days is used to refer to a chronic condition where there is an
unhealthily powerful motivation to engage in a particular behaviour. This can be driven by …

Women are generally more risk averse than men. We investigated whether between-and
within-gender variation in financial risk aversion was accounted for by variation in salivary …

The position advanced in this paper is that the bedrock of emotional feelings is contained
within the evolved emotional action apparatus of mammalian brains. This dual-aspect …

Research on testosterone-behavior relationships in humans is assessed in relation to a
version of the challenge hypothesis, originally proposed to account for testosterone …

Recent studies suggest brain oscillations as a mechanism for cerebral integration. Such
integration can exist across a number of functional domains, with different frequency rhythms …

Testosterone and cortisol figure prominently in the research literature having to do with
human competition. In this review, we track the history of this literature, concentrating …

We review the literature on aggression in women with an emphasis on laboratory
experimentation and hormonal and brain mechanisms. Women tend to engage in more …

In human and non-human animals the steroid hormones cortisol and testosterone are
involved in social aggression and recent studies suggest that these steroids might jointly …