Adolescent Drug Use and the Deterrent Effect of School-Imposed Penalties

Simple OLS estimates of the effect of school-imposed penalties for drug use on a student's consumption of marijuana are biased if both are determined by unobservable school or individual attributes. The potential reverse causality is also a challenge to retrieving estimates of the causal relationship, as the severity of school sanctions may simply reflect the need for more-severe sanctions. I offer an instrumental-variables approach to retrieving an estimate of the causal response of marijuana use to sanctions and thereby demonstrate the efficacy of school-imposed penalties as a deterrent to adolescent drug use. This is the first evidence of such efficacy and, given what is known about the consequences of drug use, suggests that school sanctions may have important long-run benefits.drug, crime, adolescent, risky behavior, expulsion

Gender and the Influence of Peer Alcohol Consumption on Adolescent Sexual Activity

I consider the alcohol consumption of opposite-gender peers as explanatory to adolescent sexual intercourse and demonstrate that female sexual activity is higher where there is higher alcohol consumption among male peers. This relationship is robust to school fixed effects, cannot be explained by broader cohort effects or general anti-social behaviors in male peer groups, and is distinctly different from any influence of the alcohol consumption of female peers which is shown to have no influence on female sexual activity. There is no evidence that male sexual activity responds to female-peer alcohol consumption.peer, adolescent, alcohol, sex, risky behavior

Fix your attitude: Labor-market consequences of poor attitude and low self-esteem in youth

Using longitudinal data on a cohort of high-school graduates, I show that individuals who reveal poor attitudes and low self-esteem as high-school students attain fewer years of post-secondary education relative to their high-school cohort, are less likely to be employed for pay fourteen years following high school and, where working for pay, realize lower earnings. Further, I find evidence that poor attitude and esteem in high school are significant predictors of the degree of supervision under which individuals ultimately work. Poor attitude and esteem in youth are also closely associated with jobs that require individuals to spend their time working more with things, as opposed to people, for example. These relationships suggest that real economic consequence exist in fostering positive attitude and esteem in youth

Adolescent drug use and the deterrent effect of school-imposed penalties

Simple OLS estimates of the effect of school-imposed penalties for drug use on a student's consumption of marijuana are biased if both are determined by unobservable school or individual attributes. The potential reverse causality is also a challenge to retrieving estimates of the causal relationship, as the severity of school sanctions may simply reflect the need for more-severe sanctions. I offer an instrumental-variables approach to retrieving an estimate of the causal response of marijuana use to sanctions and thereby demonstrate the efficacy of school-imposed penalties as a deterrent to adolescent drug use. This is the first evidence of such efficacy and, given what is known about the consequences of drug use, suggests that school sanctions may have important long-run benefits

Do No-Loan Policies Change the Matriculation Patterns of Low-Income Students?

We empirically examine whether there is discernable variation in the matriculation patterns of low-income students at public flagship institutions in the United States around changes in institutional financial-aid policies that target resident, low-income students with need-based aid. While enrollment responses cannot be attributed to these programs, we do find that institutions that introduce income-targeted aid subsequently enroll financially needier and geographically more-distant students. These findings imply that "improved" access may actually displace some needy students in favor of others.low income, financial aid, no loan, Pell

Alcohol and Student Performance: Estimating the Effect of Legal Access

We consider the effect of legal access to alcohol on student achievement. We first estimate the effect using an RD design but argue that this approach is not well suited to the research question in our setting. Our preferred approach instead exploits the longitudinal nature of the data, identifying the effect by measuring the extent to which a student’s performance changes after he gains legal access to alcohol, controlling flexibly for the expected evolution of grades as students make progress towards their degrees. We find that students’ grades fall below their expected levels upon being able to drink legally, but by less than previously documented. We also show that there are effects on women and that the effects are persistent.

Alcohol and Student Performance: Estimating the Effect of Legal Access

We consider the effect of legal access to alcohol, which is known to increase drinking behavior, on academic performance. We first estimate the effect using an RD design but argue that this approach is not well-suited to the research question in our setting. Our preferred approach instead exploits the longitudinal nature of the data, essentially identifying the effect by comparing a student's academic performance before and after turning 21. We find that students' grades fall below their expected levels upon being able to drink legally, but by less than previously documented. We also show that there are effects on women and that the effects are persistent. The main results are robust to the inclusion of individual fixed effects, individual trends, and individual quadratics, in addition to other controls, that account for the expected evolution of performance as students make progress towards their degrees.alcohol, post-secondary education, minimum legal drinking age

Do no-loan policies change the matriculation patterns of low income students?

We empirically examine whether there is discernable variation in the matriculation patterns of low-income students at public flagship institutions in the United States around changes in institutional financial-aid policies that target resident, low-income students with need-based aid. While enrollment responses cannot be attributed to these programs, we do find that institutions that introduce income-targeted aid subsequently enroll financially needier and geographically more-distant students. These findings imply that improved access may actually displace some needy students in favor of others

The Timing of Preference and Prejudice in Sequential Hiring Games

We model a hiring process in which the candidate is evaluated sequentially by two agents of the firm who each observe an independent signal of the candidate's productivity. We introduce the potential for taste-based discrimination and characterize how one agent's private valuation of the candidate influences the other agent's hiring practices. This influence is often in an offsetting direction and is partially corrective. Yet, this offsetting response can also be large enough that even a high-productivity candidate who is privately favoured by one agent, as may be the case in efforts to increase gender or racial diversity, is less likely to be hired even when the other agent has no preference over private, non-productive attributes

Running and Jumping Variables in RD Designs: Evidence Based on Race, Socioeconomic Status, and Birth Weights

Throughout the years spanned by the U.S. Vital Statistics Linked Birth and Infant Death Data (1983-2002), birth weights are measured most precisely for children of white and highly educated mothers. As a result, less healthy children, who are more likely to be of low socioeconomic status, are disproportionately represented at multiples of round numbers. This has crucial implications for any study using a regression discontinuity design in which birth weights are used as the running variable. For example, estimates will be biased in a manner that leads one to conclude that it is “good” to be strictly to the left of any 100-gram cutoff. As such, prior estimates of the effects of very low birth weight classification (Almond, Doyle, Kowalski, and Williams 2010) have been overstated and appear to be zero. This analysis highlights a more general problem that can afflict regression discontinuity designs. In cases where attributes related to the outcomes of interest predict heaping in the running variable, estimated effects are likely to be biased. We discuss approaches to diagnosing and correcting for this type of problem.regression discontinuity, donut RD, birth weight, infant mortality