Bivariate extended skew-elliptical Heckman models: mathematical characterization and an application in economic sciences

Statistical inference methods that correct sample bias are a common challenge in empirical studies, as sample selection restricts observations to a specific subset of the target population. This selection bias can arise from a latent decision process, such as the decision of a person to participate in the labor market, respond to a survey, or undergo medical treatments. Heckman models are widely used to correct this selection bias in the …