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- Adermon, Adrian
(författare)
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Essays on the Transmission of Human Capital and the Impact of Technological Change
- 2013
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Essay 1: If grandparents have an independent impact on their grandchildren's schooling, intergenerational correlations estimated using two generations will underestimate the true level of intergenerational persistence in education. Recent research has found such multi-generational effects, but there is still no consensus on whether these estimates are due to a direct impact of grandparents on their grandchildren, or if they arise because of measurement error or model misspecification. In this paper, I estimate the intergenerational transmission arising from direct interactions with grandparents by comparing families where the grandparent died before the birth of the grandchild with those where the grandparent lived to meet and spend time with the grandchild. I find that direct effects contribute most, if not all, of the transmission coefficient across three generations.Essay 2: Sibling correlations in education and income have been extensively studied in the literature, and attempts to look inside the correlation have focused on family and neighborhood effects. In this paper I estimate sibling spillovers in education—that is, the effect of an older sibling's schooling on their younger sibling's schooling. To estimate causal effects, I use a compulsory school reform in Sweden in the 1950s to instrument for the older sibling's schooling. I am unable to detect statistically significant sibling spillovers, implying that any such spillovers must be relatively small.Essay 3: (with Che-Yuan Liang) The implementation of a copyright protection reform in Sweden in April 2009 suddenly increased the risk of being caught and prosecuted for illegal file sharing. This paper uses the reform to investigate the effects of illegal file sharing on music and movie sales. We find that the reform decreased Internet traffic by 16 percent during the subsequent six months. It also increased music sales by 36 percent. Furthermore, it had no significant effects on movie sales. We conclude that pirated music is a strong substitute to legal music whereas the substitutability is less for movies.Essay 4: (with Magnus Gustavsson) This paper shows that between 1975 and 2005, Sweden exhibited a pattern of job polarization with expansions of the highest and lowest paid jobs compared to middle-wage jobs. The most popular explanation for such a pattern is the hypothesis of "task-biased technological change", where technological progress reduces the demand for routine middle-wage jobs but increases the demand for non-routine jobs located at the tails of the job-wage distribution. Our estimates, however, do not endorse this explanation for the 1970s and 1980s. Stronger evidence for task biased technological change, albeit not conclusive, is found for the 1990s and 2000s. In particular, there is both a statistically and economically significant growth of non-routine jobs and a decline of routine jobs. No link between wage changes and routine tasks, as would be expected from task-biased technological change, can however be established.
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| 2. |
- Borcan, Oana, 1987, et al.
(författare)
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The Impact of an Unexpected Wage Cut on Corruption: Evidence from a "Xeroxed" Exam
- 2012
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This paper aims to understand how corruption responds to financial incentives and, in particular, it is an attempt to identify the causal impact of a wage loss on the prevalence of corruption in the education sector. Specifically, we exploit the unexpected wage cut in May 2010 that affected all Romanian public sector employees, including the public education staff, and examine its effect on students’ scores on the high-stakes national exam which occurs at the end of high school—the Baccalaureate. To exploit the effect of an income shock on corruption, we use a difference-in-difference strategy and compare the change in the exam outcomes between the public schools—the treatment group—and the private schools—the control group, which were unaffected by the wage cut. Our findings suggest that the wage loss led the public schools to have better exam outcomes than the private schools in 2010 relative to 2009. We attribute this difference to the increased involvement in corrupt activities by public school staff, which was driven by financial incentives. These results match an unprecedentedly high number of allegations of fraud and bribery against school principals, which earned the 2010 Baccalaureate the title of the Xeroxed exam—akin to identical test answers found to have been distributed to numerous students.
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| 3. |
- Borcan, Oana, 1987, et al.
(författare)
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The impact of an unexpected wage cut on corruption: Evidence from a “Xeroxed” exam
- 2014
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Ingår i: Journal of Public Economics. - : Elsevier BV. - 0047-2727 .- 1879-2316. ; 120, s. 32-47
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Tidskriftsartikel (refereegranskat)abstract
- This paper aims to understand how corruption responds to an income loss. We exploit an unexpected 25% wage cut incurred in 2010 by all Romanian public sector employees, including the public education staff. We investigate a corruptible high-stake exam taking place shortly after the wage announcement. To measure corruption we compare changes in exam outcomes from 2007 to 2010 between public and private schools, as the latter were not affected by the policy. We find that the wage loss induced better exam outcomes in public than in private schools and we attribute this difference to increased corruption by public educators.
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| 7. |
- Eggers, Kai M., 1962-, et al.
(författare)
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Myeloperoxidase is not useful for the early assessment of patients with chest pain
- 2010
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Ingår i: Clinical Biochemistry. - : Elsevier BV. - 0009-9120 .- 1873-2933. ; 43:3, s. 240-245
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Myeloperoxidase (MPO) has been listed as a potentially useful risk marker in acute coronary syndrome. However, its clinical utility in patients with acute chest pain is not yet defined. DESIGN AND METHODS: MPO (Architect, Abbott Diagnostics) was measured in 120 healthy controls and 303 chest pain patients who had been admitted to the coronary care units of three Swedish hospitals. RESULTS: Chest pain patents had significantly higher median MPO levels compared to healthy controls (120.6 vs. 78. 9 pmol/L; p<0.001). However, MPO was not useful for the diagnosis of myocardial infarction (c-statistics 0.61 [95% CI 0.54-0.67]), and Cox regression analysis revealed no independent association between MPO and mortality (adjusted hazard ratio 1.3 [95% CI 0.8-2.0]) or the composite endpoint (adjusted hazard ratio 1.1 [95% CI 0.8-1.5]) after a median follow-up of 4.9 years. CONCLUSIONS: MPO provided no clinically relevant information in the present population of chest pain patients.
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| 8. |
- Holmlund, Helena, 1976-, et al.
(författare)
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The Causal Effect of Parents' Schooling on Children's Schooling : A Comparison of Estimation Methods
- 2011
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Ingår i: Journal of Economic Literature. - : American Economic Association. - 0022-0515 .- 0364-281X. ; 49:3, s. 615-651
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Tidskriftsartikel (refereegranskat)abstract
- We review the empirical literature that estimates the causal effect of parent’s schooling on child’s schooling, and conclude that estimates differ across studies. We then consider three explanations for why this is: (a) idiosyncratic differences in data sets, (b) differences in remaining biases between different identification strategies, and (c) differences across identification strategies in their ability to make out-of-sample predictions. We conclude that discrepancies in past studies can be explained by violations of identifying assumptions. Our reading of past evidence, together with an application to Swedish register data, suggests that intergenerational schooling associations are largely driven by selection. Parental schooling constitutes a large part of the parental nurture effect, but as a whole does not play a large role.
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