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Author: Danyal, Shah
Resulting in 4 citations.
1. Bichaka, Fayissa
Danyal, Shah
Butler, J. S.
The Impact of Education on Health Status: Evidence from Longitudinal Survey Data
Working Paper, Department of Economics and Finance Working Paper Series, Middle Tennessee State University, February 2011.
Also: http://frank.mtsu.edu/~berc/working/Economics_Working_Papers.html
Cohort(s): NLSY79
Publisher: Department of Economics and Finance, Middle Tennessee State University
Keyword(s): Educational Attainment; Endogeneity; Health/Health Status/SF-12 Scale; Heterogeneity; Human Capital; Modeling, Fixed Effects

Permission to reprint the abstract has not been received from the publisher.

Using the NLSY79 panel data set from 1979-2006 for a cross-section of 12,686 individuals, this paper investigates the effect of educational attainment on the health status of an individual as measured by “the inability to work for health reasons.” The present study bridges the gap in the literature by using the fixed-effects model, random-effects model, between-effects, and the Arellano-Bond dynamic model to analyze the impact of education on health status. We use these alternative models to control unobserved heterogeneity. Educational attainment has a statistically significant and positive effect on the quality of an individual’s health status.
Bibliography Citation
Bichaka, Fayissa, Shah Danyal and J. S. Butler. "The Impact of Education on Health Status: Evidence from Longitudinal Survey Data." Working Paper, Department of Economics and Finance Working Paper Series, Middle Tennessee State University, February 2011.
2. Danyal, Shah
Three Essays on Investment in Human Capital
Ph.D. Dissertation, Department of Economics, Middle Tennessee State University, May 2010
Cohort(s): NLSY79
Publisher: Department of Economics and Finance, Middle Tennessee State University
Keyword(s): Alcohol Use; Cigarette Use (see Smoking); Drug Use; Educational Attainment; Endogeneity; Health/Health Status/SF-12 Scale; Heterogeneity; Human Capital; Modeling, Fixed Effects; Smoking (see Cigarette Use); Substance Use

Permission to reprint the abstract has not been received from the publisher.

This dissertation deals with three interrelated essays on investment in human capital which are covered in chapters two, three, and four. In the purview of the human capital theory, prominent economists have addressed the role of new and better skills in creating job opportunities for workers, not only to find and hold on to jobs, but also to improve their living standards through higher earnings by upgrading their skills. Many researchers have also addressed the role of education on health and lifestyle choices with mixed findings.

In chapter two, we investigate the "Impact of Computer Skills on Wages" in the U.S. using NLSY79 panel data set, staggered every two years from 2000-2006 for a cross-section of 12,686 individuals. Specifically, the essay examines the controversy in the literature whether there is a wage premium due to the acquirement of computer skills by individuals confirming the skill biased technological change (SBTC) hypothesis. By defining computer skills as having a computer with Microsoft Windows or NT, at home and using the fixed- effects model and the instrumental variable technique, the study finds that individuals possessing computer skill do, indeed, earn a wage premium, confirming the SBTC hypothesis.

Chapter three titled "Effects of Education on Health: A Panel Data Study from NLSY" investigates the effect of educational attainment on the individual's health status as measured by the inability to work for health reasons. Based on the unique data set and the Arellano-Bond estimation methodology, the study finds that educational attainment has a positive effect on the quality of an individual's health status. The chapter also bridges the gap in the literature by using the robust fixed-effects model and Arellano-Bond to analyze the impact of education on the health status after controlling for the unobserved individual heterogeneity and the endogeneity problem arising from the interaction between education and the measur e of the health status.

The third essay, "Impact of Education on Lifestyle Choices: A Panel Data Study from NLSY79," examines the effect of education on different lifestyle variables using NLSY79 panels for 1992 1994 and 1998 in chapter 4. Using smoking, drinking, marijuana use, and cocaine use as lifestyle variables, the study addresses the joint determination of lifestyle variables within the framework of Seemingly Unrelated Regression (SUR) model. After controlling for the unobserved individuals heterogeneity by robust fixed-effects model extended to SUR model, the study finds that educational attainment does not necessarily have a significant effect on lifestyle choices. While future study with adequate data base and alternative methodology may find different results and explanations, perhaps, the finding of this essay suggests that it is the health knowledge that affects lifestyle choices (such as warning labels on cigarettes, alcohol products, and nutritional contents on processed foods) rather than the educational of individuals The marginal contribution of this essay to literature is the use of the robust fixed-effect model in context of SUR model to analyze the impact of the cross and within correlations of educational attainment on the lifestyle choices.

Bibliography Citation
Danyal, Shah. Three Essays on Investment in Human Capital. Ph.D. Dissertation, Department of Economics, Middle Tennessee State University, May 2010.
3. Danyal, Shah
Bichaka, Fayissa
Lee, Jong-Sung
Impact of Education on Lifestyles: What Do Longitudinal Data Show?
Working Paper, Department of Economics and Finance Working Paper Series, Middle Tennessee State University, April 2011.
Also: http://frank.mtsu.edu/~berc/working/WPSeries_April_20__2011_Impact_%20Education%20on%20Lifestyles.pdf
Cohort(s): NLSY79
Publisher: Department of Economics and Finance, Middle Tennessee State University
Keyword(s): Alcohol Use; Drug Use; Education; Educational Attainment; Heterogeneity; Modeling, Fixed Effects; Smoking (see Cigarette Use)

Permission to reprint the abstract has not been received from the publisher.

This essay investigates the effect of education on different lifestyle variables using NLSY79 panels for 1992, 1994, and 1998. The lifestyle variables are smoking, drinking, marijuana use, and cocaine use. The analysis addresses the joint determination of lifestyle variables within the framework of the Seemingly Unrelated Regression (SUR) model. Unobserved heterogeneity is controlled by the robust fixed-effects model extended to SUR model. It is found that educational attainment has no significant effect on the lifestyle choices of individuals.
Bibliography Citation
Danyal, Shah, Fayissa Bichaka and Jong-Sung Lee. "Impact of Education on Lifestyles: What Do Longitudinal Data Show?." Working Paper, Department of Economics and Finance Working Paper Series, Middle Tennessee State University, April 2011.
4. Danyal, Shah
Maskara, Pankaj
Naqvi, Annaheeta
Impact of Computer Skills on Wages in USA
Applied Economics Letters 18,11 (July 2011): 1077-1081.
Also: http://www.tandfonline.com/doi/abs/10.1080/13504851.2010.524607
Cohort(s): NLSY79
Publisher: Routledge ==> Taylor & Francis (1998)
Keyword(s): Computer Use; Skills; Wage Differentials; Wage Gap; Wages

Using US NLSY panel data set, staggered every 2 years from 2000 to 2006 for a cross section of 12,686 individuals, we investigate the effect of computer skills on wages. We use the definition of computer skills as having a personal computer with Microsoft Windows at home. Unlike most previous studies in the United States, which used instrumental variables for controlling the unobserved factors, we use fixed-effects estimation methodology. Based on the unique data set and the robust fixed-effects estimation, we find that individuals possessing computer skills earn a wage premium.

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Bibliography Citation
Danyal, Shah, Pankaj Maskara and Annaheeta Naqvi. "Impact of Computer Skills on Wages in USA." Applied Economics Letters 18,11 (July 2011): 1077-1081.