This paper studies what happens when we move from a short regression to a long regression (or vice versa), when the long regression is shorter than the data-generation process. In the special case where the long regression equals the data-generation process, the least-squares estimators have...

This paper studies what happens when we move from a short regression to a long regression (or vice versa), when the long regression is shorter than the data-generation process. In the special case where the long regression equals the data-generation process, the least-squares estimators have...

This paper investigates Becker, Hornung and Woessmann's recent claim that education had an important causal effect on Prussian industrialization and finds it unwarranted. The econometric analysis on which this claim is based suffers from severe problems, notably the omission of relevant...

This paper investigates Becker, Hornung and Woessmann’s recent claim that education had an important causal effect on Prussian industrialization and finds it unwarranted. The econometric analysis on which this claim is based suffers from severe problems, notably the omission of relevant...

Meta regression analysis is used to extract the best average from a set of N primary studies of one economic parameter. Three averages of the N-set are discussed: The mean, the PET meta-average and the augmented meta-average. They are affected by control variables that are used in some of the...