Problems associated with bulimia nervosa include:

Following sexual intercourse, testosterone levels

In studies of drug effects, introverts were found to

Dopamine firing increases when

Research shows that a high socioeconomic status enhances the effects of circulating testosterone on behavior.

Eysenck argued that the intensified emotional arousal associated with neuroticism

Eysenck argued that introverts with high emotionality are especially susceptible to anxiety and depression.

People who show an increase in brain-wave response as stimuli become more intense are termed

Men with high circulating levels of testosterone are more likely to be engaged in an occupation requiring dominance.

Extraverts tend to perform better on tasks requiring vigilance.