In certain situations, people actually salivate when they desire material things, like money and sports cars, according to a new study in the Journal of Consumer Research. "In multiple languages, the terms hunger and salivation are used metaphorically to describe desire for non-food items," writes author David Gal (Northwestern University). "But will people actually salivate when they desire material things?" The answer, Gal found, is yes. In one study, for example, Gal examined whether people...