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Huntington-Klein, Nick. Forthcoming. “Human Capital vs. Signaling is Empirically Unresolvable.” Empirical Economics. Link. Current Working Version. Old working paper (less math).
Economists offer two main explanations for the causal labor market returns to education. The first is human capital accumulation: education improves ability. The second is signaling: education allows high-ability students to distinguish themselves. A major point of interest is the relative contributions of these effects. I demonstrate the theoretical and empirical conditions necessary to identify the relative contribution of the two models. Then, I review the existing literature to evaluate whether the feasible set of empirical estimates is capable of meeting those conditions and so informing theory. Empirical evidence is capable of rejecting pure human capital and signaling models, and usually does so. I argue that, for the general question of relative contribution, necessary identification conditions are not met, and partial identification bounds are wide. Two models with different non-zero contributions of human capital and signaling cannot be empirically distinguished, limiting the usefulness of human capital vs. signaling as a framing for understanding the return to education and for policy.
Huntington-Klein, Nick, and Andrew M. Gill. 2019. “An Informational Intervention to Increase Semester Credits in College.” Series of Unsurprising Results in Economics 1: 1-17. Link. Working Paper PDF
Increased time to college degree completion increases tuition and foregone earnings costs. Encouraging college students to take more semester credits is a low-cost way to reduce time to completion. We implemented an experimental informational intervention to increase student course loads by varying the intensity of information about the benefits of taking 15 credits per semester. We find no effect of our treatment on students’ course loads. Our null finding is of interest because of the increasing popularity of low-cost informational interventions. Uncovering null results like these is important for the design of future interventions.
Huntington-Klein, Nick. 2018. “College Choice as a Collective Decision.” Economic Inquiry 56 (2): 1202-19. Link. Working Paper PDF
Although the choice between colleges can be thought of as being made collectively by a family, models of educational choice almost universally portray the decision as made by the student alone. Using a novel experimental method for identifying collective decision functions, I find that students have more influence than parents over the decision, but not exclusive control. Students care more than parents about classroom experience and future earnings. Ignoring the dual-agent nature of the decision can weaken predictions and lead to poorly-targeted policy designs.
Huntington-Klein, Nick, and Elizabeth Ackert. 2018. “The Long Road to Equality: A Meta-Regression Analysis of Changes in the Black Test Score Gap Over Time.” Social Science Quarterly 99 (3): 1119-33. Link.
This study performs a meta-regression analysis of over 1,100 regressions in 165 studies to examine the relationship between African American racial status and student achievement scores in K-12 education from 1979 to 2010. The study examines time trends in the black test score gap and estimates the extent to which controls for confounding variables including socioeconomic status and schooling characteristics attenuate the size of the gap. Across the samples in the study, the absolute relationship between Black status and achievement decreased during the 1980s and early 1990s, but has been stagnant since the late 1990s. We estimate that socioeconomic status alone explains more than half of the gap, and this influence does not vary significantly over the time period of interest. Controlling for differences in school characteristics only reduces the gap slightly, but school-level factors explain an increasing proportion of the gap over time.
Huntington-Klein, Nick, and Elaina Rose. 2018. “Gender Peer Effects in a Predominantly Male Environment: Evidence from West Point.” AEA Papers and Proceedings 108: 392-95. Link.
There is considerable interest in the success of women in overwhelmingly male environments. One hypothesized determinant of success is the increased presence of other women. However, the theoretical direction of this effect is uncertain. Previous studies of heavily male contexts have had mixed results. We take advantage of random peer group assignment at West Point military academy to identify gender peer effects in the first years in which women were admitted. We find that women do significantly better when placed in companies with more women peers. The addition of one woman peer reduces the gender progression gap by half.
Goldhaber, Dan, Cyrus Grout, and Nick Huntington-Klein. 2017. “Screen Twice, Cut Once: Assessing the Predictive Validity of Applicant Selection Tools.” Education Finance and Policy 12 (2): 197-223. Link.
Despite their widespread use, there is little academic evidence on whether applicant selection tools can improve teacher-hiring processes. We examine two screening instruments used to select classroom teachers. The screening instruments strongly predict teacher value-added in math and teacher attrition and weakly predict value-added in reading, but do not predict teacher absences. An increase of one standard deviation in screening scores is associated with an increase of about 0.06 standard deviations of student math achievement and a decrease in teacher attrition of three percentage points. These results are robust to corrections for sample selection.
Huntington-Klein, Nick. 2017. “A Method for Estimating Local Average Treatment Effects in Aggregate Data with Imperfect Assignment.” Applied Economics Letters 24 (11): 762-65. Link.
In some contexts, the effect of a treatment can be estimated with easily-accessible aggregate rather than individual data, using difference-in-difference estimation. However, under imperfect assignment this produces intent-to-treat estimates, which may not be the treatment effect of interest. This paper provides a method for estimating local average treatment effects using aggregate data. I also suggest a data source that allows the method to be applied when treatment rates are not recorded.
Huntington-Klein, Nick, James Cowan, and Dan Goldhaber. 2017. “Selection into Online Community College Courses and Their Effects on Persistence.” Research in Higher Education 58 (3): 244-69. Link.
Online courses at the college level are growing in popularity, and nearly all community colleges offer online courses (Allen & Seaman, 2015). What is the effect of the expanded availability of online curricula on persistence in the field and towards a degree? We use a model of self-selection to estimate the effect of taking an online course, using region and time variation in internet service as a source of identifying variation. Our method, as opposed to standard experimental methods, allows us to consider the effect among students who actually choose to take such courses. For the average person, taking an online course has a negative effect on the probability of taking another course in the same field and on the probability of earning a degree. The negative effect on graduation for for students who choose to take an online course is stronger than the negative effect for the average student. Community colleges must balance these results against the attractive features of online courses, and may want to consider actively targeting online courses towards those most likely to do well in them.
Huntington-Klein, Nick. 2016. "“(Un)informed College and Major Choice”: Verification in an Alternate Setting." Economics of Education Review 53: 159-63. Link.
In their recent paper “(Un)informed College and Major Choice: Evidence from Linked Survey and Administrative Data,” Hastings, Neilson, Ramirez, & Zimmerman (2016) provide an informal costly-information model, linking family background to students’ beliefs about educational costs and benefits. They verify predictions of their model using a data set of beliefs about college institutions and majors among Chilean college applicants and students. I test some of those same predictions using a data set of beliefs about college institutions and different levels of college education among high school students in the United States. I verify their predictions, with some exceptions, supporting the use of their costly-search model.
Long, Mark C., Dan Goldhaber, and Nick Huntington-Klein. 2015. “Do Completed College Majors Respond to Changes in Wages?” Economics of Education Review 49: 1-14. Link.
In an analysis connecting labor market earnings to college major choices, we find statistically significant relationships between changes in wages by occupation and subsequent changes in college majors completed in related fields of college study between 1982 and 2012. College majors (defined at a detailed level) are most strongly related to wages observed three years earlier, when students were college freshmen. The responses to wages vary depending on the extent to which there is a strong mapping of majors into particular occupations. We also find that women, blacks, Hispanics, and students with low test scores are less likely to respond to wage changes. These findings have implications for policy interventions designed to align students’ major choices with labor market demand.
Huntington-Klein, Nick. 2015. “Subjective and Projected Returns to Education.” Journal of Economic Behavior and Organization 117: 10-25. Link. Recipient of 2013 Storer Award for Labor Economics.
There is significant heterogeneity over high school students in the wage and employment rate returns to education. I evaluate this heterogeneity using subjective returns derived from a data set of high school juniors and seniors in Washington State. Variation over observables in projected returns estimated using observed data is uncorrelated with variation in subjective returns elicited by directly asking students about their beliefs. These results mean that returns estimated using observed data are likely a very weak proxy for student beliefs.
“MagnifiedIV.” 2020. MagnifiedIV for R on GitHub, MagnifiedIV for Stata on GitHub.
These packages help to run the super-local-average-treatment-effect identifying estimators described in “Instruments with Heterogeneous Effects: Bias, Monotonicity, and Localness.” (2019). CSUF Department of Economics Working Paper 2019/006.
“MLRtime: A Stata package for running Machine Learning commands in R.” 2020. MLRtime on GitHub.
Stata does not have native methods for most machine learning techniques. However, R has many. This package offers a portal through which Stata users can run several common machine learning commands in R, using mostly-Stata syntax, and returning results to Stata where they can be further worked with in Stata.
“suncorr: A visualization tool to create ‘sun and moon’ visualizations of correlation matrices.” 2019. suncorr on GitHub.
Sun and moon correlations offer a new way to visualize correlation matrices, by positioning each variable radially as a ‘sun’ in the solar system, surrounded by each of the other variables in the same order, with correlation direction and size given by color and moon size.
“pmdplyr: Panel Maneuvers in dplyr - An R package for cleaning and manipulating panel and hierarchical data.” 2019. pmdplyr on CRAN. pmdplyr website.
pmdplyr is an R package for the purpose of manipulating panel data. It introduces a flexible panel data object, the pibble, and functions that respect the panel structure of the pibble. All pmdplyr packages work with hierarchical data, or in other contexts where there is more than one observation per individual/time period.
“CVRoller: A Python program designed to automatically generate and update CVs.” 2018. cvroller.com.
This is a general-purpose automatic document generation language tuned specifically towards the generation of academic CVs. Multiple different CV variants can be updated at once from centrally updated CV data. CVRoller allows CV generation in HTML, PDF, and Markdown formats, and was used to make the CV you are reading right now.
“vtable: A quick and easy variable browser for R.” 2018. vtable on CRAN.
This is an R package for the purpose of viewing information about data while working on it. vtable() automatically generates and displays a table of information about the variables in a data set, including name, class, range, labels, and summary statistics.
Please email me at firstname.lastname@example.org if you cannot access these papers.
“A Study of West Point Shows How Women Help Each Other Advance” with Elaina Rose. 2018. Harvard Business Review. Link
This Harvard Business Review article summarizes work by myself and Elaina Rose on the performance of women at the West Point military academy in the early 1980s. We look at the progression gap between men and women, and whether women tended to do better when randomly placed in companies that have a heavier concentration of women.
“Student Courseload at CSU Fullerton” with Andrew Gill. 2018. Report for CSU Fullerton.
This report details a pair of studies performed at CSU Fullerton. The first uses administrative data to examine the effect of an increased student courseload on student performance. The second examines an experiment performed with the goal of increasing student courseload.
“Assessing the Effects of Tuition-Free Community College in Maryland” with William Zumeta. 2017. Maryland Independent Colleges and Universities Association.
This report examines the likely financial impact on students and the state of a potential plan for Maryland to implement tuition-free community college.
“Utilizing Independent Colleges and Universities to Fulfill States’ College Degree Attainment Goals” with William Zumeta. 2017. The Council of Independent Colleges. Link
America’s diverse higher education landscape includes more than 700 four-year nonprofit colleges and universities that focus on baccalaureate education. These private nondoctoral (PND) institutions are located in almost every state and collectively enroll about 1.6 million students and award nearly 150,000 degrees annually, with the majority of these being bachelor’s degrees. As this report will show, these independent colleges and universities are effective and efficient academic enterprises and, as such, are a valuable resource to the states in which they are located, as well as to the nation.
“The Cost-Effectiveness of Undergraduate Education at Private Nondoctoral Colleges and Universities” with William Zumeta. 2015. The Council of Independent Colleges. Link
This study examines key aspects of the cost-effectiveness of PND colleges as providers of baccalaureate degrees and explores how states might feasibly make better use of these colleges to produce more degrees efficiently. The study looks at degree production and cost in the PND sector relative to other higher education sectors, focusing on the most comparable public institutions. PND colleges and universities have a 22 percentage point edge over comparable public institutions in four-year graduation rates and a nearly 12 point advantage in six-year graduation rates, and they hold a significant advantage for all subgroups. Moreover, PND colleges retain students initially interested in STEM and health to degrees in those majors at rates (41 percent) approaching twice the rates of public doctoral and nondoctoral institutions (24 and 23 percent, respectively).
“Understanding Sub-baccalaureate Certificate Production and Incidence in Washington’s Labor Force Through 2023” with William Zumeta. 2015. Washington Student Achievement Council.
This report describes the production of sub-baccalaureate certificates in Washington State, and projects the growth of certificate production through 2023.
“It’s Selective, But Is It Effective? Exploring the Predictive Validity of Teacher Selection Tools” with Dan Goldhaber and Cyrus Grout. 2014. CEDR Policy Brief 2014-9.
Evidence suggests teacher hiring in public schools is ad-hoc and often does not result in good selection amongst applicants. Some districts use structured selection instruments in the hiring process, but we know little about the efficacy of such tools. In this paper we evaluate the ability of applicant selection tools used by the Spokane Public Schools (SPS) to predict three outcomes: measures of teachers’ value-added contributions to student learning, teacher absence behavior, and attrition rates. We observe all applicants to the district, both those who are and who are not hired. We find that the screening instruments predict teacher value-added in student achievement and teacher attrition, but not teacher absences.
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“The Influence of Hidden Researcher Decisions in Applied Microeconomics” with 11 coauthors. CSUF Department of Economics Working Paper 2020/006. PDF
Researchers make hundreds of decisions about data collection, preparation, and analysis in their research. We use a many-analysts approach to measure the extent and impact of these decisions. Two published causal empirical results are replicated by seven replicators each. We find large differences in data preparation and analysis decisions, many of which would not likely be reported in a publication. No two replicators reported the same sample size. Statistical significance varied across replications, and for one of the studies the effect’s sign varied as well. The standard deviation of estimates across replications was 3-4 times the typical reported standard error.
“Instruments with Heterogeneous Effects: Bias, Monotonicity, and Localness.” (2019). CSUF Department of Economics Working Paper 2019/006. PDF
In Instrumental Variables (IV) estimation, the effect of an instrument on an endogenous variable may vary across the sample. In this case, IV produces a local average treatment effect (LATE), and if monotonicity does not hold, then no effect of interest is identified. In this paper, I calculate the weighted average of treatment effects that is identified under general first-stage effect heterogeneity, which is generally not the average treatment effect among those affected by the instrument. I then describe a simple set of data-driven approaches to modeling variation in the effect of the instrument. These approaches identify a Super-Local Average Treatment Effect (SLATE) that weights treatment effects by the corresponding instrument effect more heavily than LATE. Even when first-stage heterogeneity is poorly modeled, these approaches considerably reduce the impact of small-sample bias compared to standard IV and unbiased weak-instrument IV methods, and can also make results more robust to violations of monotonicity. In application to a published study with a strong instrument, the preferred approach reduces error by about 20% in small (N about 1,000) subsamples, and by about 15% in larger (N about 33,000) subsamples.
“Semester Course Load and Student Performance” with Andrew Gill (2018). CSUF Department of Economics Working Paper 2018/009. PDF
Many college students in the United States take longer than the proscribed four years to complete their bachelor’s degrees. Long time-to-degree leads to billions of dollars of additional costs in higher education in the form of education costs and lost wages. Time-to-degree can be reduced if students to take more credits each term. However, an increased course load may lead students to reduce their time investment in each course, harming performance. Using longitudinal data on two cohorts of students at a regional four-year university with a high average time-to-degree, we fail to find any evidence that a high course load has a negative impact on student performance in class. This result is consistent with a model where students substitute time away from non-education activities when their course loads increase.
“The Changing Importance of Earnings in College Major Choice” with Elizabeth Ackert. CSU Fullerton Department of Economics Working Paper 2018/006. PDF
Prior studies find that undergraduate major choices are responsive to earnings associated with those majors, but weakly suggests that responsiveness has dropped over time. Using data on college graduates from 1973 to 2013, we find that responsiveness of major choice to labor market returns has weakened over time. The weakening response is due to changes within demographic groups rather than demographic changes in the college graduate population over time. If the goal is to maintain or increase the alignment between college major and labor market returns, incentivizing undergraduates to select high-earning majors is necessary.
“Student Preference for Guidance and Complexity in College Major Requirements” with Rachel Baker. CEPA Working Paper 04/2018 and CSU Fullerton Department of Economics Working Paper 2018/005. PDF
In order to graduate with a bachelor’s degree, students must determine which classes they must take in order to satisfy the requirements of their major. These requirements are often complex and difficult to comprehend, leading to some policy interventions that aim to reduce complexity by either increasing the amount of student guidance in course choice or by reducing the amount of complexity-increasing choice. We perform two student preference experiments on students at two large four-year universities to determine how students might respond to increasing guidance or reduced choice in their course-taking options. We find that students do not respond strongly to increases in guidance such as grouping courses into meaningful categories or removing cross-cutting requirements, but strongly reject a reduction in options, even when given a rationale for the reduction. These results suggest that increased-guidance policies have some avenues to operate in without student push-back, but that strong reductions in choice are unlikely to be popular.
“Keeping an Eye Out: Behavior in the Presence of Riskless Ambiguity.” CSU Fullerton Department of Economics Working Paper 2018/001. PDF
Past research on choice under ambiguity - decisions made when the probability of each outcome is unknown - has typically focused on scenarios in which ambiguity is presented alongside risks with known probabilities. Understanding the response to ambiguity is then difficult to distinguish from the response to risk, confounding our understanding of how subjects behave in conditions of ambiguity. In this paper I take advantage of the fact that all decisions are necessarily ambiguous to some extent to develop a scenario in which ambiguity is present but is otherwise risk-free. Respondents participate in a task that is very similar to a multi-armed bandit but with no random variation in payouts. I show that respondents anticipate ambiguity in payouts without prompting, continue to do so for long periods of time, respond differently to gains and losses in this context, and that this tendency is independent of risk preference. I offer a basic, clean framework for creating a riskless ambiguous environment for subjects, and argue that these exploratory results make the case for further study of ambiguity in riskless environments.
“Most Likely to Succeed: Personality and Long-Run Economic Outcomes” with Elaina Rose.
We estimate the effect of college seniors’ personality traits on long-run career and economic outcomes. The analysis uses a novel data set that merges information from the 1980 - 1984 West Point yearbooks with detailed alumni records. Personality traits were inferred from peer-written narratives and faculty-conferred distinctions. The narratives were evaluated by West Point alumni from non-study classes and the multiple reports were aggregated using a Latent Class Model (LCM). We find that cadets identified by faculty as leaders, and those characterized by peers as leaders, determined, or social prove to be more successful in terms of military and civilian career outcomes 31-35 years after graduation.
Empirical Economics Replication Project with Andrew Gill
Statistical Discrimination and Labor Market Competitiveness
Student Ability Revelation, Race, and Instuctor Standards with Tyler Ransom
The Complexity of College Course Requirements with Rachel Baker
The Development of a Woman-Friendly Culture: Evidence from West Point with Elaina Rose
The Potential Impact of Free Community College Programs on Independent Colleges with William Zumeta
Job Market Slows As a New Decade Begins, According to Bureau of Labor Statistics Data. Daniel Coats, Mihaylo BizBlog, January 23, 2020.
IPA’s Weekly Links. Chris Blattman, October 26, 2019.
Congress must address gender gap in nominations to military service academies. The Hill, Liam Brennan, August 18, 2019.
New journal provides outlet for research not deemed sexy enough. Stuff, June 6, 2019.
New academic journal only publishes ‘unsurprising’ research rejected by others. CBC Radio, May 27, 2019.
The faiV: Week of May 17, 2019: The Causality Edition. Fai, May 17, 2019
This Economics Journal Only Publishes Results that are No Big Deal. Vox, May 17, 2019
Inflation Raised CSU Prices. The Daily Titan, May 10, 2019
These Open Resources Will Help You Master Statistics. Forbes, February 28, 2019
Study of West Point Cadets Shows How Women Help Each Other Advance. CSU Fullerton News Center, January 25, 2019
Chico’s, Unilever GSK, ‘Handmaid’s Tale’ Sequel: Broadsheet November 29. Fortune Magazine, December 1, 2018
The faiV: Week of November 26, 2018: The Astounding Edition. fai, November 30, 2018
High-Five Your Work Wife: New Study Shows How Women Help Each Other Advance. PureWow, Sarah Stiefvater, November 29, 2018
On Caplan Educational Signaling (#6). Tuesday Assorted Links, Marginal Revolution, November 27, 2018
Killing Colleges in Massachusetts. Inside Higher Ed, August 29, 2018
Cal State Fullerton professor wonders whether major course requirements could be made simpler. The Daily Titan, February 26, 2018
Private colleges can partner to solve issues. The Edwardsville Intelligencer, May 8, 2017
Findings on Education Finance and Policy Discussed by Investigators at University of Washington. Education Letter, May 3 2017
The Value of a College Degree. The Inter-Mountain, April 27, 2017
Incentives to Attend Private Colleges Could Save States Money and Raise Graduation Rates. The Chronicle of Higher Education, April 14, 2017
Hiring Successful Teachers - Two New Studies Point to What Works and What Doesn’t. EdSurge, October 3, 2016
CSUF researcher studies how stereotypes affect higher education decisions. OC Register, May 12, 2016
How Will Your College Degree Pay Off? Mihaylo College Bizblog, January 4, 2016
Facing growing scrutiny, colleges set out to prove their value. The Hechinger Report, January 22, 2016.
Is Robert anti-teacher? The Education Gadfly, November 5, 2014
Study: Teacher hiring should be more scientific. Associated Press, October 29, 2014
Last updated: April 7, 2020