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

In studies of drug effects, introverts were found to

Extraverts tend to perform better on tasks requiring vigilance.

Following sexual intercourse, testosterone levels

This factor influences a person’s chances of obesity more than any other factor:

Refrigerate leftovers within 5 hours to prevent bacterial growth.    

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

Organic foods are more likely to contain high pesticide residue.

The term obese is generally used to refer to someone who is ____ or more above his or her ideal body weight.

Problems associated with bulimia nervosa include: