Jason Grigsby

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Developed countries with low fertility and mortality rates are already experiencing population aging and will continue to do so. Some developing countries undergoing demographic transitions are beginning to acknowledge the issues of population aging. The projected declines in fertility in other developing countries will mean substantial population aging in(More)
Past trends in fertility and mortality in China have led to an age composition that will age rapidly in the coming decades. In this paper we examine measures of population aging in China from 1953 to 1982, and then project population aging to the year 2050 using a cohort-components methodology. The projected measures of population aging that result from(More)
The discussion compares the population policies adopted in Sweden during the 1930s to raise fertiity and the policies considered in the US during the 1970s in response to the high fertility experienced in the 1950s. Both sets of policies recommended increased availability of birth control, more liberal abortion laws, and greater employment opportunities(More)
Life-course studies of human development suggest that birth cohorts become more internally differentiated with respect to personality characteristics as their members age. This article examines possible explanations for this macro-level phenomenon in terms of three micro-level research traditions: (1) individual differentiation, (2) social(More)
The effect of testosterone administration on muscle development and protein synthesis was studied with intact male rabbits. Rabbits were randomized into three experimental groups; day 0 control (G-1), day 15 control (G-2) and day 15 testosterone (G-3). Testosterone (delta4-Androsten-17beta-ol-3-one in silastic tubing) was surgically implanted into the G-3(More)
This collection of three articles considers alternative approaches to heterogeneity, drawing upon research on work, health care, and personality. They demonstrate the importance of multidisciplinary perspectives for constructing theories that explain the wide range of experiences among aging individuals. 1 In response to widespread, popular perceptions of(More)
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