Richard Blundell presenting

Research methods

We continue to make advances in developing models and methods to study the dynamic behaviour of individuals and firms, the structure of the education, labour and marriage markets, and their implications for policy design and evaluation.

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Showing 61 – 80 of 1019 results

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Bias and consistency in three-way gravity models

Working Paper

We study the incidental parameter problem for the “three-way” Poisson Pseudo-Maximum Likelihood (PPML) estimator recently recommended for identifying the effects of trade policies and in other panel data gravity settings.

8 March 2021

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Counterfactual worlds

Working Paper

We study an extension of a treatment effect model in which an observed discrete classifier indicates which one of a set of counterfactual processes occurs, each of which may result in the realization of several endogenous outcomes.

1 February 2021

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Low-rank approximations of nonseparable panel models

Working Paper

We provide estimation methods for panel nonseparable models based on low-rank factor structure approximations. The factor structures are estimated by matrix-completion methods to deal with the computational challenges of principal component analysis in the presence of missing data.

23 October 2020

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Inference on winners

Working Paper

Many empirical questions concern target parameters selected through optimization. For example, researchers may be interested in the effectiveness of the best policy found in a randomized trial, or the best-performing investment strategy based on historical data.

7 September 2020

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Quantifying domestic violence in times of crisis

Working Paper

Recent contributions using police recorded calls-for-service and/or crime data to estimate impacts of COVID-19 lockdowns on the incidence of domestic violence (DV) have reported relatively modest effects.

2 September 2020

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Inference after Estimation of Breaks

Working Paper

In an important class of econometric problems, researchers select a target parameter by maximizing the Euclidean norm of a data-dependent vector.

6 July 2020

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Uncertain Identification

Working Paper

Uncertainty about the choice of identifying assumptions is common in causal studies, but is often ignored in empirical practice.

6 July 2020