The Rasch family of models considered in this paper includes models for polytomous items and multiple correlated latent traits, as well as for dichotomous items and a single latent variable. An R package is described that computes estimates of parameters and robust standard errors of a class of...

Studies have shown that voluntary job-to-job changes have a positive effect on wage growth. This paper argues that the impact of a job change on wage mobility depends on the position in the wage distribution. Using panel data from the UK and Germany, we show that a change of employer results...