There have been numerous twin-based studies in the past that control for the unobservable variables in the analyses. However, these past studies have often yielded contradictory results with no consensus on some important issues and no definite conclusions. The objective of the present study is an attempt to explain some of the differences in the past studies, and to re-examine some issues on returns to education, the importance of genetic and environmental factors, and the significance of measurement errors. / This study applies four twin-based models to three available US twin data. The empirical results in this study show that (1) while some differences in existing studies are caused by different data used, other differences are due to different models used; (2) the "true" returns to schooling are mostly less than the "overall" returns to schooling, indicating a positive omitted variable bias; (3) the omitted variables are a significant portion, viz. approximately 40%, of the "overall" returns to schooling; (4) these omitted variables, when divided into the genetic and environmental factors, generally indicate that environmental factors have a stronger effect than genetic factors; (5) models with two schooling variables are more prone to measurement error, biasing the estimates more significantly; (6) the measurement error problem in the schooling variable biases the estimates and the magnitude of the bias depends on the data used; and (7) results for males and females are different. / Yung Chor-Wing Linda. / "May 2000." / Adviser: Junsen Zhang. / Source: Dissertation Abstracts International, Volume: 61-08, Section: A, page: 3293. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2000. / Includes bibliographical references (p. 202-205). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. Ann Arbor, MI : ProQuest dissertations and theses, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts in English and Chinese. / School code: 1307.
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_342939 |
| Date | January 2000 |
| Contributors | Yung, Chor-Wing Linda., Chinese University of Hong Kong Graduate School. Division of Economics. |
| Source Sets | The Chinese University of Hong Kong |
| Language | English, Chinese |
| Detected Language | English |
| Type | Text, theses |
| Format | electronic resource, microform, microfiche, 1 online resource (vii, 217 p.) |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
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