Abstract Contribution to Special Issue on Fast effects of steroids. It is well documented that
testosterone concentrations change rapidly within reproductively relevant contexts (eg …

Rapid testosterone fluctuations in response to social stimuli are observed across a wide
range of species, and the highly conserved nature of these fluctuations suggests an …

Testosterone concentrations fluctuate rapidly in response to competitive and aggressive
interactions, suggesting that changes in testosterone rather than baseline differences shape …

In many species testosterone fluctuates in concert with outcome-dependent changes in
social status, such that winning a competition leads to an increase in circulating testosterone …

A large body of evidence indicates that individual differences in baseline concentrations of
testosterone (T) are only weakly correlated with human aggression. Importantly, T …

Hormones modulate various physiological, morphological, and behavioral processes critical
to survival and reproduction (Ketterson & Nolan, 1992). Importantly, hormone–behavior …

Highlights•Human correlational studies show a weak link between testosterone and
aggression.•Acute changes in testosterone during competition increase subsequent …

Over the past 20 years, social neuroendocrinology researchers have developed
pharmacological challenge paradigms to assess the extent to which testosterone plays a …

Testosterone concentrations rise rapidly in the context of competitive interactions and
remain elevated in winners relative to losers. Theoretical models suggest that this divergent …

The functions of rapid increases in testosterone seem paradoxical because they can occur
in response to different social contexts, such as male–male aggressive encounters and male …