examined the interaction between this genotype and stressful life events in predicting depression found that although stress is associated with an increased risk of depression, there was no interaction evident between the genetic trait and stress.152 However, the studies varied in sample designs, measures of both stress and depression and analytic approaches. Relatedly, research on race and genetics (and in other areas of health researcher more generally), should exercise great caution in making generalizations and inferences to larger populations when the analyses are based on data from non-representative samples.