In this talk, we will show how to use simulations in Stata to explore to what extent and under what circumstances a test is problematic. We will illustrate this for a set of tests of the parallel regression assumption in ordered logit and probit models: the Brant, likelihood ratio, Wald, score,...

Allison (1999) notes that comparisons of logit and probit coefficients across groups can be invalid and misleading, proposes a procedure by which these problems can be corrected, and argues that ``routine use [of this method] seems advisable'' and that ``it is hard to see how [the method] can be...

Structural equation models with latent variables have been popular in the social sciences for some time. Recently such models have been used to make comparisons between groups, within dyads, and across time. However, possible problems with establishing meaningful metrics for unobservable...

Low national saving, a persistent current account deficit and the rapid expansion of balance sheets are potential reasons why the UK economy needs to rebalance. Global factors are likely to have been an important driver of these developments, but domestic factors have played an important role in...

Top-down stress testing is one way of assessing the resilience of the financial system to the risks it might face now or in the future. The Risk Assessment Model of Systemic Institutions (RAMSI) developed at the Bank of England is an example of a top-down stress-testing model and is part of the...

Many researchers and journals place a strong emphasis on the sign and statistical significance of effects—but often there is very little emphasis on the substantive and practical significance of the findings. As Long and Freese (2006, Regression Models for Categorical Dependent Variables Using...