Abstract
This paper develops a stock adjustment model relating total expected births to conventional aggregate fertility rates for married women over 25. Each year, cohorts bear about 20 percent of their additional expected births. Aggregate U.S. rates have been consistent with expectations as expressed in surveys between 1955 and 1975; indeed, total expected births may be inferred from aggregate fertility behavior. A peculiar empirical finding is that the additional expected fertility of nonterminators has not changed since 1955, despite the dramatic decline in total expected and actual fertility. The model leads to a dynamic expression for the duration pattern of current and cumulative fertility and for the proportion of couples who have terminated childbearing. The model is also used to analyze the effects of changing contraceptive failure rates on fertility patterns. For example, a decline in “timing” failure rates increases duration-specific fertility five years later.
Marital Fertility, Contraceptive Failure, Marriage Cohort, Current Population Report, Aggregate Rate
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References
Blake, J., & Gupta, P. Das (
1975
). Reproductive Motivation Versus Contraceptive Technology: Is Recent American Experience an Exception?
. Population and Development Review
, 1
, 229
–249
. 10.2307/1972222Farid, S. M. (
1973
). On the Pattern of Cohort Fertility
. Population Studies
, 27
, 159
–168
. 10.2307/2173460Freedman, R., Goldberg, D., & Bumpass, L. (
1965
). Current Fertility Expectations of Married Couples in the United States
. Population Index
, 31
, 3
–20
. 10.2307/2732048Freedman, R., Goldberg, D., & Bumpass, L. (
1966
). Fertility Expectations in the U.S.: 1962–64
. Population Index
, 32
, 181
–197
. 10.2307/2732130Heuser, Robert (
1976
). Fertility Tables for Birth Cohorts by Color: United States, 1917–1973
. Washington, D.C.
: U.S. Government Printing Office
.Jain, Anrudh, and A. Hermalin. 1969. Fecundity Models for Estimating Fertility over the Reproductive Period. Paper presented at the 1969 meeting of the International Union for the Scientific Study of Population, held in London.
Keyfitz, N. (
1971
). How Birth Control Affects Births
. Social Biology
, 18
, 109
–121
.Lee, Ronald D. (
1976
). Marital Fertility in the U.S.: 1949–1974
. Ann Arbor
: University of Michigan
.Michael, Robert, & Willis, R. (
1976
). Contraception and Fertility: Household Production Under Uncertainity
. In Nestor Terleckyj (Ed.), Household Production and Consumption
(pp. 27
–93
). New York
: National Bureau of Economic Research
.Ryder, Norman (
1973
). Contraceptive Failure in the United States
. Family Planning Perspectives
, 5
, 133
–142
. 10.2307/2133810Ryder, Norman, & Westoff, C. (
1969
). Relationships Among Four Orientations to Total Number of Children: Intended, Expected, Desired and Ideal
. Washington, D.C.
: Center for Population Research, National Institute of Child Health and Human Development
.Ryder, Norman, & Westoff, C. (
1971
). Reproduction in the United States, 1965
. Princeton
: Princeton University Press
.Ryder, Norman, & Westoff, C. (
1972
). Wanted and Unwanted Fertility in the United States-1965 and 1970
. In Charles Westoff, & R. Parke (Eds.), Demographic and Social Aspects of Population Growth. Vol. 1 of Research Reports of the Commission on Population Growth and the American Future
(pp. 467
–488
). Washington, D.C.
: U.S. Government Printing Office
.Sklar, J., & Berkov, B. (
1975
). The American Birth Rate: Evidences of a Coming Rise
. Science
, 189
, 693
–700
. 10.1126/science.1098147Current Population Reports, Series P-20, No.2 11. Previous and Prospective Fertility: 1967
. (1971
). Washington, D.C.
: U.S. Government Printing Office
.Current Population Reports, Series P-20, No. 248. Birth Expectations and Fertility: June 1972
. (1973
). Washington, D.C.
: U.S. Government Printing Office
.Current Population Reports, Series P-20, No. 263. Fertility Histories and Birth Expectations of American Women: June 1971
. (1974
). Washington, D.C.
: U.S. Government Printing Office
.Current Population Reports, Series P-20, No. 265. Fertility Expectations of American Women: June 1973
. (1974
). Washington, D.C.
: U.S. Government Printing Office
.Current Population Reports, Series P-20, No. 277. Fertility Expectations of American Women: June 1974
. (1975
). Washington, D.C.
: U.S. Government Printing Office
.Current Population Reports, Series P-20, No. 288. Fertility History and Prospects of American Women: June 1975
. (1976
). Washington, D.C.
: U.S. Government Printing Office
.Current Population Reports, Series P-20, No. 206. Marital Status and Living Arrangements: March 1976
. (1977
). Washington, D.C.
: U.S. Government Printing Office
.Vital Statistics of the United States, 1972. Vol. I. Natality
. (1976
). Washington, D.C.
: U.S. Government Printing Office
.Westoff, C. (
1976
). The Decline of Unplanned Births in the United States
. Science
, 191
, 38
–41
. 10.1126/science.1246597© Population Association of America 1977
1977
