title: On subject selection in cognitive aging research.
abstract: This paper surveys the recent practices of subject selection in cognitive aging research and provides examples of how the magnitude of age differences in the overall population could be under- or over-estimated given different sample distributions of gender, health, education and intellectual functioning. Some guidelines are suggested for consideration in future research.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000375:Aging; D003071:Cognition; D003430:Cross-Sectional Studies; D004522:Educational Status; D005260:Female; D006304:Health Status; D006805:Human Experimentation; D006801:Humans; D007360:Intelligence; D008297:Male; D008875:Middle Aged; D012107:Research Design; D012494:Sampling Studies; D012737:Sex Factors