Microbes colonise all multicellular life, and the gut microbiome has been shown to influence
a range of host physiological and behavioural phenotypes. One of the most intriguing and …

Considerable evidence suggests that the steroid hormone testosterone mediates major life-
history trade-offs in vertebrates, promoting mating effort at the expense of parenting effort or …

Positive emotions have attracted increased scientific attention in the past decade. They have
long been studied as markers of people's overall well-being or happiness (Diener & …

Power motivation/Eugene M. Fodor--The achievement motive: a review of theory and
assessment of n achievement, hope of success, and fear of failure/Joyce S. Pang--The …

This article develops theory on responsible leadership based on a model involving three
leadership roles: an expert who displays organizational expertise, a facilitator who cares for …

Past research suggests that individuals high in basal testosterone are motivated to gain high
status. The present research extends previous work by examining endocrinological and …

Adaptationist models of human mating provide a useful framework for identifying subtle,
biologically based mechanisms influencing cross-gender social interaction. In line with this …

We use a within-subjects experiment with math and word tasks to show that relative
performance feedback moves high-ability females toward more competitive forms of …

With salivary assessment of steroid hormones increasing, more work is needed to address
fundamental properties of steroid hormone levels in humans. Using a test–retest design and …

Few things seem more natural and functional than wanting to be happy. We suggest that,
counter to this intuition, valuing happiness may have some surprising negative …