An analysis of the trends in and factors affecting African American sex ratios in the United States /
Traditionally, the sex ratio was viewed as a descriptive variable describing the number of males to females in a given population. Recently, studies have explored in more detail the imbalance of the sex ratio and its effect on family formation. Surprisingly, literature focusing on the determinants o...
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| Format: | Thesis Book |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
2000.
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| Subjects: | |
| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=731930331&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | Traditionally, the sex ratio was viewed as a descriptive variable describing the number of males to females in a given population. Recently, studies have explored in more detail the imbalance of the sex ratio and its effect on family formation. Surprisingly, literature focusing on the determinants of unbalanced sex ratios is scarce and limited. Although several studies have identified variables such as nutrition, mortality, fertility, individual selection, and undercoat as causes of unbalanced sex ratios, literature discussing group differences are descriptive and mostly limited to contemporary cross-sectional comparisons rather then trends. Thus, the goal of this dissertation is to study in as much detail as possible the factors affecting the sex ratio of Blacks in the United Sates at the national and the local level. At the national level, there is a demographic analysis. Here, I discuss the demographic factors affecting the sex ratio, specifically changes in sex ratios at birth, changes due to emigration and/or immigration, changes in age distribution, and changes in sex differentials in mortality. I also discuss the artificial and technical factors such as age misreporting errors and census undercoats which may affect the nominal sex ratios of Blacks. There is a cause-specific analysis. Here, I examine specific causes of mortality, 1950 - 1990. Finally, there is a decomposition analysis. Here, I decompose the source of change in the sex ratio by examining selected components of change such as mortality, fertility, the sex ratio at birth, and their interaction effects. At the local level, there is a mathematical analysis. Here, I examine the impact of differential migration by age distribution, differential migration by sex distribution, and their impact on the aggregated sex ratio of Blacks and Whites during the period 1940 - 1990 in 307 Southern Nonmetropolitan Counties. Finally, there is a regression analysis. Here, I examine the relationship between variables such as relative group size, percent manufacturing, and percent government with Black migration. The results indicate that differential mortality rates have the greatest eared manipulating the sex ratios of Blacks. In particular, the declining sex ratio of individuals 45 and above decreases the overall sex ratios of Blacks. |
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| Item Description: | Vita. "Major Subject: Sociology". |
| Physical Description: | xvi, 231 leaves : illustrations ; 28 cm. Issued also on microfiche from University Microfilm Inc. |
| Bibliography: | Includes bibliographical references (leaves 178-194). |