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What Drives (Gaps in) Scientific Study Participation? Evidence from a COVID-19 Antibody Survey

Dutz, Deniz; Greenstone, Michael; Hortaçsu, Ali; … - National Bureau of Economic Research - 2023

Underrepresentation of minority and poor households in scientific studies undermines policy decisions and public health. We study data from a serological study that randomized participation incentives. Participation is low (6% at $0, 17% at $100, 29% at $500) and unequal: minority and poor...

Persistent link: https://www.econbiz.de/10013537774

Causal Models for Longitudinal and Panel Data : A Survey

Arkhangelsky, Dmitry; Imbens, Guido - National Bureau of Economic Research - 2023

This survey discusses the recent causal panel data literature. This recent literature has focused on credibly estimating causal effects of binary interventions in settings with longitudinal data, with an emphasis on practical advice for empirical researchers. It pays particular attention to...

Persistent link: https://www.econbiz.de/10014447263

The Search for Good Jobs : Evidence from a Six-year Field Experiment in Uganda

Bandiera, Oriana; Bassi, Vittorio; Burgess, Robin; … - National Bureau of Economic Research - 2023

: vocational training, vocational training combined with matching youth to firms, and matching only. Training is offered in sectors … with high quality firms. The matching intervention assigns workers for interviews with such firms. At baseline, unskilled … firms. However, youth additionally offered matching become discouraged because call back rates from firm owners are far …

Persistent link: https://www.econbiz.de/10014337802

A Delegation Approach to Regulating Hiring Discrimination

Martellini, Paolo; Menzio, Guido - National Bureau of Economic Research - 2024

We approach the design of anti-discriminatory labor market regulation as a delegation problem. A private firm (the agent) is repeatedly faced with the opportunity of hiring one among several applicants to fill its vacancies. The firm is biased against applicants from some demographic group, and...

Persistent link: https://www.econbiz.de/10014468218

Identification of Non-Additive Fixed Effects Models : Is the Return to Teacher Quality Homogeneous?

Hahn, Jinyong; Singleton, John D.; Yildiz, Neşe - National Bureau of Economic Research - 2023

Panel or grouped data are often used to allow for unobserved individual heterogeneity in econometric models via fixed effects. In this paper, we discuss identification of a panel data model in which the unobserved heterogeneity both enters additively and interacts with treatment variables. We...

Persistent link: https://www.econbiz.de/10014322772

Semiparametric Conditional Factor Models : Estimation and Inference

Chen, Qihui; Roussanov, Nikolai; Wang, Xiaoliang - National Bureau of Economic Research - 2023

This paper introduces a simple and tractable sieve estimation of semiparametric conditional factor models with latent factors. We establish large-N-asymptotic properties of the estimators without requiring large T. We also develop a simple bootstrap procedure for conducting inference about the...

Persistent link: https://www.econbiz.de/10014421243

Heterogeneity, Uncertainty and Learning : Semiparametric Identification and Estimation

Bunting, Jackson; Diegert, Paul; Maurel, Arnaud - National Bureau of Economic Research - 2024

We provide semiparametric identification results for a broad class of learning models in which continuous outcomes depend on three types of unobservables: i) known heterogeneity, ii) initially unknown heterogeneity that may be revealed over time, and iii) transitory uncertainty. We consider a...

Persistent link: https://www.econbiz.de/10014486255

Double and Single Descent in Causal Inference with an Application to High-Dimensional Synthetic Control

Spiess, Jann; Imbens, Guido; Venugopal, Amar - National Bureau of Economic Research - 2023

Motivated by a recent literature on the double-descent phenomenon in machine learning, we consider highly over-parameterized models in causal inference, including synthetic control with many control units. In such models, there may be so many free parameters that the model fits the training data...

Persistent link: https://www.econbiz.de/10014421227

Negative Weights are No Concern in Design-Based Specifications

Borusyak, Kirill; Hull, Peter - National Bureau of Economic Research - 2024

Recent work shows that popular partially-linear regression specifications can put negative weights on some treatment effects, potentially producing incorrectly-signed estimands. We counter by showing that negative weights are no problem in design-based specifications, in which low-dimensional...

Persistent link: https://www.econbiz.de/10014468217

Stacked Difference-in-Differences

Wing, Coady; Freedman, Seth; Hollingsworth, Alex - National Bureau of Economic Research - 2024

This paper introduces the concept of a "trimmed aggregate ATT," which is a weighted average of a set of group-time average treatment effect on the treated (ATT) parameters identified in a staggered adoption difference-in-differences (DID) design. The set of identified group-time ATTs that...

Persistent link: https://www.econbiz.de/10014468254

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