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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

APT or "AIPT"? The Surprising Dominance of Large Factor Models

Didisheim, Antoine; Ke, Shikun; Kelly, Bryan T.; … - National Bureau of Economic Research - 2024

We introduce artificial intelligence pricing theory (AIPT). In contrast with the APT's foundational assumption of a low dimensional factor structure in returns, the AIPT conjectures that returns are driven by a large number of factors. We first verify this conjecture empirically and show that...

Persistent link: https://www.econbiz.de/10015072953

A Flexible, Heterogeneous Treatment Effects Difference-in-Differences Estimator for Repeated Cross-Sections

Deb, Partha; Norton, Edward C.; Wooldridge, Jeffrey M.; … - National Bureau of Economic Research - 2024

This paper proposes a method to estimate treatment effects in difference-in-differences designs in which the treatment start is staggered over time and treatment effects are heterogeneous by group, time, and covariates, and when the data are repeated cross-sections. We show that a...

Persistent link: https://www.econbiz.de/10015094868

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

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

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

Identifying the Cumulative Causal Effect of a Non-Binary Treatment from a Binary Instrument

Vohra, Vedant; Goldin, Jacob - National Bureau of Economic Research - 2024

The effect of a treatment may depend on the intensity with which it is administered. We study identification of ordered treatment effects with a binary instrument, focusing on the effect of moving from the treatment's minimum to maximum intensity. With arbitrary heterogeneity across units,...

Persistent link: https://www.econbiz.de/10014544704

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