On subject selection in cognitive aging research.
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.
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