Daniel Hausman and James Woodward claim to prove that the causal Markov condition, so important to Bayes-nets methods for causal inference, is the ‘flip side’ of an important metaphysical fact about causation—that causes can be used to manipulate their effects. This paper disagrees. First, the premise of their proof does not demand that causes can be used to manipulate their effects but rather ...

A test of adverse events and strategic timing theories can be conducted by determining whether some relevant financial decision variables, such as financial benefit from filing for bankruptcy, or debt discharged in bankruptcy are endogenous with the bankruptcy decision or not. For the strategic timing theory such decisions are endogenous, while for the adverse events theory they are not. Hausma...

I thank Julie Cullen, David Card, David Cutler, Amy Finkelstein, Emmanuel Saez, Jesse Shapiro, seminar participants at Harvard, Yale, Stanford, Chicago, Princeton, Berkeley, Northwestern, Madison, and Columbia, and especially Gary Chamberlain, Martin Feldstein, Jerry Hausman, Caroline Hoxby, and Larry Katz for helpful comments. Philippe Bouzaglou and David Lee provided excellent research assist...

This paper investigates the e¤ects of unobservable factors that, as is well-known, contaminate two of the variables most used in labour market research, namely the stock of unemployment and the stock of vacancies. Using a matching function framework, we compare di¤erent panel data estimators using a number of appropriate Hausman tests robust to deviations from the classical errors assumptions. ...

This paper estimates a price elasticity using a flexible demand specification on survey data where prices are observed with error are correlated with household characteristics. The demand function is modeled as being a polynomial (and more generally also including trigonometric terms) in the unobserved true prices and the form of the dependency between the observed (mismeasured) prices and hous...

Earlier workers have used only light microscopy for hair studies, but advent of SEM has made possible analysis of hairs for ultra-structural details. Mammal hairs have been examined under SEM by other workers (Hausman, 1920; 1924; Short, 1978; Riggott and Wyatt, 1980) abroad. In India, few studies are available on SEM of hairs of mammals. Kopikar and Sabnis (1976, 1977) have done some work on s...

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and cellularity changes after partial lipectomy in Siberian hamsters. Am J Physiol 1996 Feb;270:R383e92. 6. Dark J, Forger NG, Zucker I. Rapid recovery of body mass after surgical removal of adipose tissue in ground squirrels. Proc Natl Acad Sci U S A 1984 Apr;81:2270e2. 7. Dark J, Forger NG, Stern JS, et al. Recovery of lipid mass after removal of adipose tissue in ground squirrels. Am J Physi...

Most work in the area of nonlinear econometric modelling is based on a single equation and assumes exogeneity of the explanatory variables. Recently, work by Caner and Hansen (2003) and Psaradakis, Sola, and Spagnolo (2004) has considered the possibility of estimating nonlinear models by methods that take into account endogeneity but provided no tests for exogeneity. This paper examines the pro...

In this chapter we present a unified theory of specification testing that applies to a broad range of the data, model, and estimator configurations likely to be met in econometric practice. The abstract results are applied to obtain specification tests based on maximum-likelihood estimators for the parameters of dynamic models. We propose a dynamic information matrix test that should be useful ...