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Who Are the Aged?
Biological and Environmental Factors
Psychological and Social Factors in Longevity and Survival
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ability activity aftereffect Age differences age groups analysis Arenberg associated Baltes Basowitz behavior Birren Botwinick Brinley cautiousness central nervous system Chown cognitive cohort compared comparison concluded correlation cross-sectional cross-sectional studies decline with age decrement difficulty digits disengagement effects Eisdorfer example experiment experimental factors figural aftereffects Figure function important indicated intelligence investigated involved Journal of Gerontology Korchin later learning less long-term memory longer longitudinal studies Masters and Johnson meaningful measured Necker cubes nervous system old age old and young older person older subjects paired-associate percent perceptual performance presbycusis presented problem problem-solving processes rats recall relation to age relatively reported retest Riegel rigidity role rotifer Schaie Schonfield seen senescence sensory serial learning sexual short-term memory showed similar slowing with age social stimulus persistence stimulus trace subtests suggested Talland task tend test scores theory verbal visual Welford women young adults younger