The Differential Fertility of the American Negro

1952 ◽  
Vol 17 (4) ◽  
pp. 437 ◽  
Author(s):  
Everett S. Lee ◽  
Anne S. Lee
Keyword(s):  
Differential Fertility

Differential Fertility

1937 ◽  
Vol a29 (3) ◽  
pp. 243-257 ◽  
Author(s):  
Enid Charles
Keyword(s):  
Differential Fertility

Differential fertility among immigrants to England and Wales and some implications for population projections

1969 ◽  
Vol 1 (S1) ◽  
pp. 119-127 ◽  
Author(s):  
Jean Thompson
Keyword(s):  
Age Structure ◽  
Age Groups ◽  
Population Projections ◽  
Fertility Rates ◽  
Female Population ◽  
Differential Fertility ◽  
England And Wales ◽  
Adult Age ◽  
Completed Family Size ◽  
Socio Economic Factors

SummaryThe age structure of the immigrant female population as shown by the 1961 Census was heavily biased towards the young adult age groups, where fertility rates are highest. The birth rate for such a population could be expected considerably to exceed the average for this country as a whole, due to differences in age structure alone. The Census also showed marked differences betwen the fertility rates of different groups of immigrants but suggested that for the most important groups —from the Irish Republic, the Indian sub-continent and the Caribbean—they then amounted to a completed family size of roughly ½ child above the England and Wales average. There were also marked differences in 1961 between the socio-economic structure of immigrant groups; such evidence as there is points to socio-economic factors as playing an important part in explaining the fertility of immigrants, and its possible change over time.

Intelligence, education and fertility: a comparison between the 1932 Scott Surveys

1969 ◽  
Vol 1 (3) ◽  
pp. 247-271 ◽  
Author(s):  
James Maxwell
Keyword(s):  
Negative Relationship ◽  
Occupational Class ◽  
Differential Fertility ◽  
Number Of Children ◽  
Middle Range ◽  
Two Samples ◽  
Two Measures ◽  
The Mean ◽  
Linear Differential ◽  
Intelligence Education

In 1932 all 11-year-old children in Scottish schools were given a group intelligence test, and a sample of 1000 was individually tested. The future careers of this sample were followed till 1939. In 1968, 709 of the original sample could be traced, and data about education, employment, and family were obtained. In 1947, a parallel survey was conducted in Scotland, and a sample of 1208 children was individually tested, and followed up for 16 years. The same data about education, employment and family are available for the 1947 Sample.A comparison between length of school education indicates a greater proportion completing a full secondary education in the 1947 than in the 1932 Sample. Proportionally, more of the 1947 Sample graduated from university. In marriage, it is possible to cut across the 1932 Sample at the age of 27 years, to make direct comparison with the 1947 Sample at the same age. The greatest incidence of marriage is in the middle range of IQ, but later records for the 1932 Sample show a relative uniformity of marriage over the IQ range. The pattern for occupational class is similar. There is a slight tendency to later marriage in the 1932 Sample. Two measures of differential fertility for IQ are used. For both samples, there is a negative relationship between the mean IQs of the sample members and the number of their sibs, more marked for the 1947 Sample. The number of children born to members of the two samples before the age of 27 years shows a similar relationship, but in the following 20 years the pattern for the 1932 Sample changes to one with a peak of mean IQ at two children. It is suggested that linear differential fertility for IQ may be a function of the age of the parent.

High Grade Mental Deficiency in Relation to Differential Fertility

1947 ◽  
Vol 93 (391) ◽  
pp. 289-302 ◽  
Author(s):  
J. A. Fraser Roberts
Keyword(s):  
Genetic Factors ◽  
Mental Deficiency ◽  
Low Grade ◽  
High Grade ◽  
Single Factor ◽  
Important Distinction ◽  
Differential Fertility ◽  
The People ◽  
Hereditary Factors ◽  
The Individual

Mr. Caradoc Jones this morning emphasized very clearly indeed the important distinction between high and low grade mental deficiency. He showed us some very striking figures suggesting, not that heredity is not involved in both, but that it is a different sort of heredity. It always seems to me that in considering this and related matters the analogy of stature is a helpful one. Many of us remember those posters of the last war but one, which said “Your King and Country Need YOU,” coupled with the statement that “You” had to be 5 ft. 4 in. high—a standard which went down afterwards. If one rejects for any purpose a segment of the population on a measurement of this kind one is rejecting people for very different reasons. The arbitrary standard cuts off, of course, the dwarfs; the achondroplasics, the midgets, the cretins, the rachitic dwarfs, and so on; but it cuts off far more of those who are simply short. In causation we can normally expect the dwarf's condition to be due to hereditary factors, actually a single factor in achondroplasia; or it may be something environmental, as in the rachitic dwarfs or the cretins, but when we come to the people who are just short, it has been shown fairly conclusively that in a civilized community in which the standard of nutrition is adequate, at least 90 per cent. of the differences are due to heredity; but it is a different sort of heredity. We have a whole host of genetic factors, each one of which has a small effect; but the effect is cumulative; some factors make for greater stature, some for smaller, and it is on the sum total received from the parents that the stature of the individual depends.

scholarly journals Some patterns and social impacts of external migration on a below-replacement population: Denmark by the turn of the millennium

1996 ◽  
pp. 136-149
Author(s):  
Hans O Hansen ◽  
Paul S. Maxim
Keyword(s):  
Population Growth ◽  
Social Impacts ◽  
Turn Of The Millennium ◽  
Differential Fertility ◽  
The Past ◽  
Naturalized Citizens ◽  
Wide Range ◽  
And Migration ◽  
The Impact ◽  
External Migration

As with many other nations in Europe, Denmark has experienced below-replacement fertility over the past three decades. The impact on population growth of the recent fertility decline to a large extent has been offset by a positive net balance of external migration. To provide a factual basis for a wide range of policy issues and social and cultural impacts we start by studying external migration, differential fertility, naturalization of foreign nationals, and population growth in the framework of multidimensional life models. Migrants and naturalized citizens tend to have reproductive behavior and sex/age profiles that differ significantly from those of the remaining population. To study some concerted demographic and social impacts of such differentials, we construct a number of midterm projections based on existing and expected development of fertility, mortality, and migration.

The Family of Goals-Achievement Matrix Methods: Respectable Enough for Citizen Participation in Planning?

1981 ◽  
Vol 13 (9) ◽  
pp. 1151-1161 ◽  
Author(s):  
T Sager
Keyword(s):  
Citizen Participation ◽  
Production Model ◽  
Spatial Equilibrium ◽  
Land Rent ◽  
Matrix Methods ◽  
Differential Fertility ◽  
The Family ◽  
Planning Processes ◽  
A New Technique ◽  
Evaluation Techniques

This article examines the problems of location and land rent within the framework of a linear and multisector production model in a radioconcentric space. In the case of a single product, the order of the differential fertility and location rent is examined. This order is neither given nor natural, but depends especially on the distribution. Formulating a spatial equilibrium with n goods where several qualities of soil exist raises a number of difficulties. When several techniques are used to manufacture a product then it is shown how different techniques are located in relation to the centre according to prices and the distribution variables. The manner in which a new technique is introduced and spreads in space is also examined. The predominant method used for evaluation in British structure planning compares strategies in terms of their achievement of particular criteria derived from community objectives. A recent survey shows that of the traditional evaluation techniques only modified goals-achievement matrix (GAM) methods are widely used in structure planning. This approach is also applied to local and project oriented planning processes where citizen participation seems even more necessary. The goals-achievement matrix was not presented by its originator—M Hill—as an entirely unambiguous method. It can be interpreted as a set of significantly diverging variants which are used here for three purposes: to show that economists' critique of GAM is too general, to clarify the connections between GAM and other well-known evaluation methods, and to discuss how GAM could best be structured for use in local participatory planning.

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