David Green


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Doctoral Student Supervision (Jan 2008 - May 2019)
Essays in applied econometrics (2018)

Chapter 1 develops an empirical two-sided matching model with endogenous pre-investment. The model can be used to measure the impact of frictions in labour markets using a single cross-section of matched employer-employee data. The observed matching of workers to firms is the outcome of a discrete, two-sided matching process where firms with heterogeneous preferences over education sequentially choose workers according to an index correlated with worker preferences over firms. The distribution of education arises in equilibrium from a Bayesian game: workers, knowing the distribution of worker and firm types, invest in education prior to the matching process. I propose an inference procedure combining discrete choice methods with simulation. Counterfactual analysis using Canadian data shows that changes in matching frictions can lead to economically significant equilibrium changes in both inequality and the probability of investing in higher education. These effects are more pronounced when worker and firm attributes are complements in the match surplus function.In many economic settings, agents behave similarly because they share information with one another. Information-sharing relations among agents can be modeled as a network, and the strategic interactions among them as a game on a network. Chapter 2, coauthored with Kyungchul Song and Nathan Canen, develops a tractable empirical model of social interactions where each agent - without seeing the full information network - shares information with their neighbors and best responds to the other players based on simple beliefs about their strategies. We provide conditions on the information networks and beliefs of agents such that their best responses exhibit economically intuitive features and desirable external validity relative to equilibrium models of social interaction. Moreover, the setup admits asymptotic inference without requiring that the researcher observes all the players in the game, nor that the they know precisely the sampling process. Chapter 3 discusses how discrete distributions of unobserved heterogeneity can be identified using information on sample attrition. Although attrition is often seen as a source of selection problems, we argue that it can also be used to solve selection problems - even in the absence of covariates or panel data.

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Residential schooling and sources of Aboriginal disparity in Canada (2013)

Abstract Indigenous peoples throughout the world live in more difficult socio-economic circumstances than their non-indigenous counterparts. This dissertation investigates the long run economic and cultural consequences of one of the most infamous policies to affect Indigenous peoples: the forcible removal of children from their homes and their placement in boarding schools (also known as residential schools). These sorts of policies were instituted in numerous countries throughout the world, including the United States, Canada, and Australia, and they have been heavily criticized. The policies have often had the stated goal of cultural assimilation, are generally perceived to have been educational failures and to have harmed Indigenous peoples both directly and intergenerationally. I investigate these possibilities using several sources of variation. I find that attendance at a residential school is associated with both economic and cultural assimilation but I do not find strong evidence that this is transmitted intergenerationally. The results suggest that while residential schooling had significant impacts, it is likely not the predominate cause of the economic disparity observed today. To get a sense of plausible alternative explanations of Indigenous disparity in the Canada context, I finish by establishing some of the basic patterns in earnings differences between Indigenous groups and their non-indigenous counterparts.

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Understanding barriers to educational attainment among Canadian youth. (2010)

In this dissertation, I explore barriers to educational attainment faced by Canadianyouth from three different perspectives. The first paper, which is joint with DavidGreen and Giovanni Gallipoli, uses an extended version of an unobserved factormodel to investigate the factors that influence a youth’s decision to drop out ofhigh-school. Our results support three main conclusions. First, ability at age 15plays an important role in dropping out. Second, parental valuation of educationhas a substantial impact on medium and low ability teenagers. Third, parentaleducation has no direct effect on dropping out once we control for ability andparental valuation of education.The second paper poses the question ”Can neighbourhoods change the decisionsof youth on the margin of university participation?” I use the fraction ofadults who have at least a Bachelors degree in a small geographic area surroundinga youth’s home to proxy one source of potential peers and role models. Resultssuggest that at the mean neighbourhoods have a substantial impact on the likelihoodof attending university.I further explore this finding by estimating the marginal effect of neighbourhoodcharacteristics at different points on the socio-economic distribution, andthe distribution of reading test scores. One striking finding is that while universityparticipation among youth from families with university degrees is unaffectedby neighbourhoods, the marginal effect of neighbourhoods is largest for the highskilledyouth from lower socio-economic backgrounds.The final paper evaluates the impact of a post-secondary preparatory course onhigh school achievement. BC AVID, a pilot project implemented with a randomassignment design, encouraged students whose grade 8 grades were within the Band C range to enrol in advanced classes and provided academic support throughan elective course. I find that while the program increased the chances that studentsenrolled in an advanced math course, it also increased the likelihood that studentsfailed the provincial examination. BC AVID did, however, help students pass theircourse work and as a result more students obtained credit for the advanced mathcourse.

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Three Essays in Labour Economics: Wage Determination in Local Labour Markets (2009)

No abstract available.

The immigrant experience : networks, skills and the next generation (2008)

This thesis explores several issues in the adaptation process of immigrants andtheir children in Canada.Chapter 2 investigates why second-generation immigrants are better educatedthan the remaining population. Using a standard human capital framework whereindividuals choose how much to invest in both their children's and their ownhuman capital, I show that a gap in education can arise in the absence ofdifferences in unobservable characteristics between immigrants and the nativeborn. Rather, it can arise due to institutional factors such as imperfecttransferability of foreign human capital and credit constraints. The model'skey implication is a negative relationship between parental human capitalinvestments and children's educational attainment, particularly in familieswith uneducated parents. I find strong empirical evidence of such tradeoffs inhuman capital investments occurring within immigrant families.Chapter 3 re-assesses the effect of living in an ethnic enclave on labourmarket outcomes of immigrants. I find evidence of cohort effects in therelationship between mean earnings and the proportion of co-ethnics in the CMAwhich vary by education level. Next, using information on the proportion ofone's friends who share one's ethnicity, I test a common assumption that theenclave effect is a network effect. I find that traditional, geography-basedmeasures of the ethnic enclave effect capture the impact of factor(s) otherthan social networks. In fact, the two effects generally offset each other tosome degree in determining immigrant employment outcomes. Neither measure has astatistically significant effect on average immigrant earnings, at least incross-sectional data.Chapter 4, co-authored with David Green and Craig Riddell, tests twoalternative theories about why immigrants earn less than native-born workerswith similar educational attainment and experience - discrimination versuslower skills (measured by literacy test scores). We find that immigrant workerseducated abroad have lower cognitive skill levels (assessed in English orFrench) than similar native-born workers. This skills gap can explain much ofthe earnings gap. At the same time, foreign-educated immigrants receive nolower returns to skills than the native born. These results offer strongevidence against the discrimination hypothesis.

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