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Author: Lakdawalla, Darius N.

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1.	Lakdawalla, Darius N.
1.	The Economics of Teacher Quality Journal of Law and Economics 49,1 (April 2006): 285-329. Also: http://www.journals.uchicago.edu/JLE/journal/issues/v49n1/490104/490104.web.pdf Cohort(s): NLSY79 Publisher: University of Chicago Press Keyword(s): Schooling; Skilled Workers; Teachers/Faculty; Technology/Technological Changes; Wage Rates Concern is often voiced about the quality of American schoolteachers. This paper suggests that, while the relative quality of teachers is declining, this decline may be the result of technological changes that have raised the price of skilled workers outside teaching without affecting the productivity of skilled teachers. Growth in the price of skilled workers can cause schools to lower the relative quality of teachers and raise teacher quantity instead. Evidence from the National Longitudinal Survey of Youth demonstrates that wage and schooling are good measures of teacher quality. Analysis of U.S. census microdata then reveals that the relative schooling and experience-adjusted relative wages of U.S. schoolteachers have fallen significantly from 1940 to 1990. Moreover, class sizes have also fallen substantially. The declines in class size and in relative quality seem correlated over time and space with growth in the relative price of skilled workers.
	Bibliography Citation Lakdawalla, Darius N. "The Economics of Teacher Quality ." Journal of Law and Economics 49,1 (April 2006): 285-329.

2.	Lakdawalla, Darius N. Philipson, Tomas
2.	Labor Supply and Weight Journal of Human Resources 42,1 (Winter 2007): 85-116. Also: http://www.jstor.org/stable/40057299 Cohort(s): NLSY79 Publisher: University of Wisconsin Press Keyword(s): Body Mass Index (BMI); Exercise, On-the-job; Health Factors; Job Characteristics; Labor Supply; Occupations; Weight We use panel data from the National Longitudinal Survey of Youth to investigate on-the-job exercise and weight. For male workers, job-related exercise has causal effects on weight, but for female workers, the effects seem primarily selective. A man who spends 18 years in the most physical fitness-demanding occupation is about 25 pounds (14 percent) lighter than his peer in the least demanding occupation. These effects are strongest for the heaviest quartile of men. Conversely, a male worker spending 18 years in the most strength-demanding occupation is about 28 pounds (15 percent) heavier than his counterpart in the least demanding job. [ABSTRACT FROM AUTHOR] Copyright of Journal of Human Resources is the property of University of Wisconsin Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts)
	Bibliography Citation Lakdawalla, Darius N. and Tomas Philipson. "Labor Supply and Weight." Journal of Human Resources 42,1 (Winter 2007): 85-116.

3.	Lakdawalla, Darius N. Philipson, Tomas
3.	The Growth of Obesity and Technological Change: A Theoretical and Empirical Examination NBER Working Paper No. 8946, National Bureau of Economic Research, May, 2002. Also: http://papers.nber.org/papers/W8946 Cohort(s): NLSY79 Publisher: National Bureau of Economic Research (NBER) Keyword(s): Income; Job Characteristics; Obesity; Technology/Technological Changes; Weight This paper provides a theoretical and empirical examination of the long-run growth in weight over time. We argue that technological change has induced weight growth by making home- and market-production more sedentary and by lowering food prices through agricultural innovation. We analyze how such technological change leads to unexpected relationships among income, food prices, and weight. Using individual-level data from 1976 to 1994, we then find that such technology-based reductions in food prices and job-related exercise have had significant impacts on weight across time and populations. In particular, we find that about forty percent of the recent growth in weight seems to be due to agricultural innovation that has lowered food prices, while sixty percent may be due to demand factors such as declining physical activity from technological changes in home and market production.
	Bibliography Citation Lakdawalla, Darius N. and Tomas Philipson. "The Growth of Obesity and Technological Change: A Theoretical and Empirical Examination." NBER Working Paper No. 8946, National Bureau of Economic Research, May, 2002.

4.	Lakdawalla, Darius N. Reville, Robert T.
4.	Unclaimed Injuries and Workers' Compensation Adequacy NIOSHTIC No. 20029254, Washington, DC: National Inst. for Occupational Safety and Health, 22 Sep 2005. Also: http://www2a.cdc.gov/nioshtic-2/BuildQyr.asp?s1=20029254&f1=*&Startyear=&Adv=0&terms=1&EndYear=&Limit=10000&sort=&D1=10&PageNo=1&RecNo=1&View=e& Cohort(s): NLSY79 Publisher: Centers for Disease Control and Prevention Keyword(s): Health Care; Injuries, Workplace The workers' compensation system was designed to provide health care and compensation for workers with occupational injuries or illness without regard to fault. Nearly all workers are covered by workers' compensation insurance, but not every worker that is injured on the job actually receives workers' compensation benefits. This project examines how many workers fail to file for compensation from job-related injuries, and what factors appear to explain this failure. It also examines the impact of this failure on the adequacy of wage replacement that workers receive from the workers' compensation system. By doing so, it sheds important light on several important issues regarding the measurement of the economic consequences of workplace injuries, particularly for underserved populations. This study examines the filing decision of injured workers using data from the National Longitudinal Survey of Youth (NLSY), a nationally representative survey with detailed information on demographic variables as well as occupational injuries and workers' compensation filing.
	Bibliography Citation Lakdawalla, Darius N. and Robert T. Reville. "Unclaimed Injuries and Workers' Compensation Adequacy." NIOSHTIC No. 20029254, Washington, DC: National Inst. for Occupational Safety and Health, 22 Sep 2005.

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