There were a limited number of studies addressing this topic, but even among those identified some population groups were more represented than others. Predominantly, studies involved African American26–33 or Asian American34–38 samples. There was a very limited focus on Latinos/Hispanics (one study on Mexican Americans39) and American Indians (two studies identified40,41). Additionally, across population groups, most samples included younger subjects, for example, older children and adolescents. Studies including adults fell into two categories, with most being conducted with young adult/college student samples and fewer involving samples representing a wide range of adult ages.
