Examined timing of completion of childbearing in cohorts of American women born in 1906-15, 1916-25, 1926-30, and 1931-35. Revealed large changes in timing of completion of childbearing. Among whites, found 50 percent reduction in proportion finishing after age 37. Among blacks, found large reductions in proportion ending before age 25 and…

Analysis of Current Population Survey data indicates that each successive cohort of white family heads born since 1944-48 faced an increasingly greater chance of being poor, even with the increase in female-headed families controlled. The black cohort effect is not significant, but period effects suggest that blacks' economic gains of the 1970s…

Used cohort method of analysis to examine teenage suicide in Texas. Beginning with suicide rates for white males aged 15-19 in 1945, suicide rates were calculated and plotted for five-year age cohorts entering late teenage years. Analysis confirmed rising risk factor associated with age group. Cohort patterns for suicide revealed recent…

Conceptualizes aging as the dynamic process of cohorts moving through the life course in historical time. Provides a strategy for developing research on life course structure, age differences between cohorts, and how and why aging is experienced differentially by various segments of a cohort. (SNR)

Examined socioeconomic and institutional correlates of marriage timing in Khartoum, Sudan. Found that age at marriage rose sharply across later study cohorts. Living with husband's parents after marriage and marrying endogamously were both associated with sharply reduced ages at marriage. Increase in marriage age appeared to be recent, rapid, and…

Discusses five issues related to the Georgia Centenarian Study: recruitment of centenarians, birth cohort effects, the changing age structure of the population, religion, and cognition and survival. Concludes that Georgia Centenarian Study provides critically needed baseline data so characteristics of centenarians of the twenty-first century can…

Improved health care and family planning services, reduction in sociogeographic isolation, and increased economic development were found to be responsible for declining fertility rates in a rural Eastern Kentucky county during 1960-1980. Contemporary fertility patterns in an area historically exhibiting one of Appalachia's highest fertility rates…