Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 191 for “"Instrumental variable."”.
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Marijuana Demand: An Instrumental Variable Approach
… marijuana demand is endogenous by utilizing an instrumental variable technique. Findings are consistent with previous research and suggest that the own-price elasticity of demand for marijuana is inelastic and approximately -0.6. Estimates also point to the conclusion that contrary to recent …
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Semiparametric instrumental variable methods for causal response models
This dissertation proposes new instrumental variable methods to identify, estimate and test for causal effects of endogenous treatments. These new methods are distinguished by the combination of nonparametric identifying assumptions and semiparametric estimators that provide a parsimoniuous summary …
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Aircraft simulation validation using an instrumental variable approach
… proposed validation procedure is based on the instrumental variable parameter identification method. The instrumental variable method requires a choice of "instruments." For this research, the "instruments" are chosen using the response predicted by an available simulation model. With the …
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Theoretical and Applied Essays on the Instrumental Variable Method
… The first chapter shows that the theoretical Instrumental Variable model can be derived by reparameterization of a well-specified statistical model defined on the joint distribution of the involved random variables as the actual (local) data generation process. This reveals the covariance …
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Robust methods in Mendelian randomization
Mendelian randomization uses genetic variants as instrumental variables to estimate the causal effect of a risk factor on an outcome using observational data. If a genetic variant is included in a Mendelian randomization study that does not satisfy the instrumental variable assumptions then the …
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System Identification And Fault Detection Of Complex Systems
… we will focus on statistical subspace instrumental variable methods which allow the consideration of an appealing mathematical model in many control applications consisting of a nonlinear feedback system with nonlinearities at both inputs and outputs. Different solutions within the …
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Essays in applied microeconomics
… the small sample performance of traditional instrumental variable estimators. The second chapter investigates the influence of school starting age on cognitive and non-cognitive skills. Previous literature found a positive impact of relatively older school starting age on students’ cognitive …
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Essays in Islamic Banking, Institutional Quality, and Financial Development Outcomes
… rely on large-n cross-country datasets and instrumental variable (IV) estimation strategies to address endogeneity concerns and arrive at more credible causal inferences. The first essay studies the Islamic banking–institutional quality–financial inclusion linkages. The analysis exploits …
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An empirical analysis of the effects of fertility on maternal health status in Namibia
… for possible endogeneity in the fertility variable in the maternal health status model, the Instrumental variable (2SLS) method was used. The use of contraceptive was used as an instrumental variable for fertility. Moreover, the study made use of Body Mass Index and the probability of a …
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Cash-in-Hand, Wives-in-Power: An Exploratory Analysis of Microfinance in Jordan
… on intra-spousal decision-making outcomes. An instrumental variable estimation technique finds a weak link between microfinance and empowerment.
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Three Essays on Compensation
… market outcomes. Specifically, I utilize an instrumental variable model to control for the endogeneity of a husband's insurance coverage to his wife's decision to enter the labor force or sort into part-time jobs. Contrary to previous research in this area, I find that husband's coverage has …
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Three Essays On Political Economy And The Methods
… namely using the lagged endogenous explanatory variable as its instrumental variable (IV). This paper starts with a conceptual framework, and then conducts the numerical analysis. It shows that when the lagged IV only violates the independence assumption, the lagged IV estimate is consistent, …
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Three Essays on Consumer Behavior and Health Outcomes: An Economic Analysis of the Influence of Nutrition Information and Knowledge on Food Purchasing Behavior and the Impacts of Primary Care Givers Parenting on Childhood Obesity
… the potential endogeneity problem using an instrumental variable approach and a non-instrumental variable approach. Our results suggest the existence of the endogeneity of nutrition knowledge and indicate that ignoring the endogeneity problem in econometric modeling will downwardly bias the …
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The impact of a conditional cash transfer program on consumption of rural households in Peru
… on schooling attendance. In this thesis, I use instrumental variable techniques to measure the effect of the program in 2007 and 2011. Using annual data from the National Household Survey (ENAHO) of the National Institute of Statistics (INEI), I explore whether the effect of the program changed …
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Statistical issues in Mendelian randomization: use of genetic instrumental variables for assessing causal associations
… genetic variant satisfying the assumptions of an instrumental variable for the phenotype of interest can be used to divide a population into subgroups which differ systematically only in the phenotype. This gives a causal estimate which is asymptotically free of bias from confounding and reverse …
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Three essays on the adoption and impacts of improved maize varieties in Ethiopia
… cost changes with adoption are estimated using instrumental variable techniques, with treatment effect heterogeneity fully accounted for in marginal treatment effect estimation. A backward derivation procedure is then developed within an economic surplus framework to identify the counterfactual …
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Essays on the counterintuitive consequences of labor policies in service industries
… schedules on store productivity. I use an instrumental variable approach and a natural experiment to partially address the possible endogeneity of scheduling decisions. I find evidence that increasing the adequacy and consistency of employees' hours improves employee and store productivity …
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The Effects of Child Sponsorship on younger Sibling Confidence
… quantified in the child’s drawings and an instrumental variable OLS with clustered standard errors, children from both families with sponsored children and families with waitlisted children are interviewed. The spillover effects are then tested by taking the difference between the younger …
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The impact of mobile money on Rwandan household consumption
… Survey. It applies probabilistic models and an instrumental variable approach to explore the relationship between mobile money use and consumption. The study finds that mobile money is financially inclusive and increases the likelihood of higher consumption among households. Remittances, …
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Air pollution, avoidance behaviors, and neglected social costs : evidence from outdoor leisure and commuting behaviors
… the pollution blown from upwind cities as the instrumental variable for local pollution, I show that heavy PM2.5 pollution reduces park visitation by 10% in northern Chinese cities.
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