Diversity in the study of aging and lifespan development.

In psychology, authors have shined a light on a lack of ethnic/racial and cultural diversity in sampling and scholarship. These issues pertain also to the study of aging and lifespan development. This article presents examples of how diverse sampling, across ethnic/racial groups and cultures, enriches theories of aging and adult development. There remain, however, numerous theoretical insights that are yet to be uncovered by future research that seeks to further diversify this sub-discipline. Good practices and avenues to diversification are considered, including targeted sampling of minority groups in the community, online sampling with use of data screening tools, lifespan-orientated surveys initiated in non-Western countries, and a redress of the balance in the perceived value of research from different regions of the world.