This text introduces students progressively to various aspects of qualitative models and assumes a knowledge of basic principles of statistics and econometrics. After the introduction, Chapters 2 through 6 present models with endogenous qualitative variables, examining dichotomous models, model specification, estimation methods, descriptive usage, and qualitative panel data. The final two chapters describe models that explain variables assumed by discrete or continuous positive variables.

1. Introduction; 2. The simple dichotomy; 3. Modelling; 4. Estimation methods and tests; 5. The log-linear model and its applications; 6. Qualitative panel data; 7. The Tobit model; 8. Models of market disequilibrium; 9. Truncated variables in simultaneous equations; 10. Simultaneous equation systems; 11. The Poisson model; 12. Models of duration.