The purpose of this study was to examine the relationship between instrumental and expressive traits, and health-related behaviors among individuals in emerging adulthood (18-25 years old) in two Western societies. Individuals (100 males, 100 females) in an American sample and a British sample (36 males, 75 females) completed the Personal Attributes Questionnaire, a measure of neuroticism, the Health Behaviors Inventory, and two measures of perceived physical health. As hypothesized, in support of the androgyny model, individuals in both samples who scored high on both instrumental and expressive traits reported better health practices (i.e. safety belt use, less smoking) than individuals who scored low on both sets of traits or high on only one set of traits, after controlling for neuroticism. As hypothesized, for both samples, neuroticism explained more variance in perceived physical health than the other personality traits.