Title: James-Stein Estimators in Factor Analysis Author: Elissa Burghgraeve Affiliation: Ghent University Abstract: In the social and behavioral sciences, latent variables are ubiquitous. The conventional factor analysis model relating these latent variables with their indicators, assumes that the relation between the latent variable and its indicators is linear. An assumption that might not be fulfilled. We propose a flexible way to estimate linear and nonlinear factor models relying on semiparametrics. We consider James-Stein estimators which were originally proposed for measurement error models. We apply them in our setting of estimating parameters in factor models and extend them to accommodate for nonlinear relations. References: James, W. and Stein, C. (1961). Estimation with quadratic loss. Proceedings of the Fourth Berkeley Symposium on Mathematical Statistics and Probability, 1, 361-379. Whittemore, A.S. (1989). Errors-in-Variables Regression Using Stein Estimates. The American Statistician, 43(4), 226-228.