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Population Decrease

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Journal Article
Demography (1974) 11 (4): 657–672.
Published: 01 November 1974
... counties. The county groups are distinctly different in demographic and socioeconomic characteristics. Out-migration as a mode of response adopted by the rural population in Iowa is by far the most dominant factor leading to natural decrease. Sustained net out-migration is more likely to touch off natural...
Journal Article
Demography (1969) 6 (2): 91–99.
Published: 01 May 1969
... will have affected 520 or more counties by 1970, or about a sixth of all counties in the Nation. Given the increasing extent of the condition, research appraising its social and economic consequences for an area is urged. Corn Belt Natural Decrease Prospective Status Population Pansions Employ Labor...
Journal Article
Demography (1970) 7 (1): 87–91.
Published: 01 February 1970
... using only such conventional symptomatic indicators as births, deaths, non-agricultural employment, and automobile registrations, probably due to the relatively unique absolute population decrease 1950–1960 that occurred in many counties. To improve the predictive power of the technique: counties were...
Journal Article
Demography (2013) 50 (6): 2151–2171.
Published: 25 July 2013
... of variation in the strength of the local economy. We find little effect of job losses on the white teen birthrate. For black teens, however, job losses to 1 % of the working-age population decrease the birthrate by around 2 %. Birth declines start five months after the job loss and then last for more than one...
Journal Article
Demography (1967) 4 (2): 532–552.
Published: 01 June 1967
.... There were marked changes in the labor force, a rapid increase in the proportion of women employed and a decrease in the proportion of Negroes. The level of family income rose faster than in other regions. Five and three quarter million persons were transferred from the farm population. A net of 2.7 million...
Journal Article
Demography (1980) 17 (1): 57–70.
Published: 01 February 1980
... contributed significantly to overall population gain and was particularly strong among counties without an urban center. The rate of natural increase continued to slow in the post-1970 period, with natural decrease becoming common among counties with protracted histories of population decline. 7 1 2011...
Journal Article
Demography (1969) 6 (1): 55–74.
Published: 01 February 1969
... time in these components. For the metropolitan areas of Columbus, Dayton, Hartford, Miami, and Syracuse in 1950 and 1960, housing-unit density decreased from the center more sharply than population density. Vacancies, which increased slightly at the center, were proportionately low in the stable middle...
Journal Article
Demography (1967) 4 (2): 876–893.
Published: 01 June 1967
... population data." As can be seen from Table 1, the weights given to children in Scale 1 are much higher than those of Scale 2, and the difference between the two decreases with age. The scales do not allow for the possibil- ity that the level of consumption require- the household and by the age of its head...
Journal Article
Demography (1992) 29 (4): 595–612.
Published: 01 November 1992
... level, the SI population does not have a structure with decreasing numbers of people at successively higher ages. Instead the age density curve in an SI population may have several peaks and valleys, depending on age-specific exit rates and on the distribution of immigrants' ages at arrival. Previous...
Journal Article
Demography (2016) 53 (4): 1027–1049.
Published: 09 June 2016
... by age and across space. Overall, migration served to integrate ethnoracial groups in both decades, whereas differences in natural population change (increase/decrease) would have increased segregation. Age differences, however, are stark. Net migration of the population under age 40 reduced segregation...
FIGURES | View All (5)
Journal Article
Demography (1969) 6 (1): 1–11.
Published: 01 February 1969
... of total population. The results failed to confirm the hope that the crude birth rate would be decreased by 12 per 1,000 in a decade merely by sterilization of five per 1,000 of the population per annum. The study also discusses various measures of reduction in the crude birth rate. By a reasonable measure...
Journal Article
Demography (1970) 7 (2): 241–253.
Published: 01 May 1970
... population has been decreasing in size, however, the birth rate has fallen; births registered in 1967 or in 1968 were fewer in number than births registered in 1964, 1965, or 1966. The downturn in the crude birth rate occurred shortly after an official national family planning program was inaugurated...
Journal Article
Demography (2022) 59 (3): 975–994.
Published: 01 June 2022
...Eric Bonsang; Vegard Skirbekk Abstract Cognitive decline is a widespread concern as populations grow older. However, population aging is partly driven by a decrease in fertility, and family size may influence cognitive functioning in later life. Prior studies have shown that fertility history...
Includes: Supplementary data
Journal Article
Demography (2012) 49 (3): 1061–1074.
Published: 15 May 2012
...Greg Kaplan; Sam Schulhofer-Wohl Abstract We show that much of the recent reported decrease in interstate migration is a statistical artifact. Before 2006, the Census Bureau’s imputation procedure for dealing with missing data in the Current Population Survey inflated the estimated interstate...
FIGURES | View All (4)
Journal Article
Demography (1990) 27 (1): 19–30.
Published: 01 February 1990
...Roger A. Wojtkiewicz; Sara S. McLanahan; Irwin Garfinkel Abstract In recent decades, the number of families headed by women has increased dramatically. In this article, we use U.S. census data from 1950 to 1980 to consider the extent to which population growth, fertility change, decreased marriage...
Journal Article
Demography (2005) 42 (4): 621–646.
Published: 01 November 2005
...Christine R. Schwartz; Robert D. Mare Abstract This paper reports trends in educational assortative marriage from 1940 to 2003 in the United States. Analyses of census and Current Population Survey data show that educational homogamy decreased from 1940 to 1960 but increased from 1960 to 2003. From...
Journal Article
Demography (1967) 4 (2): 497–514.
Published: 01 June 1967
... re- gions, mainly as a result of the decrease in the proportion of children in the popu- lation commensurate with assumed future decreases in birth rates. For the more de- veloped regions, the proportion of the Table 2.-POPULATION AGE STRUCTURE, BY AGE BROAD GROUPS, FOR THE WORLD AND DEVELOPMENT...
Journal Article
Demography (1968) 5 (1): 158–173.
Published: 01 March 1968
... of papers calling for a new interpretation of the population problems in developing countries. Boris Urlanis questioned the oft-stated contention of the various Marxist writers that birthrates decrease as the proportion of the population living in urban areas increases. He said that it is possible...
Journal Article
Demography (1991) 28 (3): 455–466.
Published: 01 August 1991
.... but it is a meaningful demographic quantity. It reflects a population’s log momentum, or the amount of growth built into a population’s nonstable age distribution. The rate at which the Kullback distance moves toward 0 is neither constant nor monotonic. At any point in time, however, it decreases by the covariance...
Journal Article
Demography (1997) 34 (3): 421–427.
Published: 01 August 1997
..., they are two manifestations of the underlying process of demographic transformation. We consider three measures of aging over the transition to stationarity: the increase in mean population age, the decrease in the proportion under age 30, and the increase in the proportion over age 65. The three measures...