Heckman’s (1976, 1979) sample selection model has been employed in many studies of linear or nonlinear regression applications. It is well known that ignoring the sample selectivity problem may result in inconsistency of the estimator due to the correlation between the statistical errors in...

This study examines the impact of climate on the yields of seven major crops in Taiwan based on pooled panel data for 15 prefectures over the 1977-1996 period. Unit-root tests and maximum likelihood methods involving a panel data model are explored to obtain reliable estimates. The results...

Panels of regional unemployment data across different demographic groups are examined to explore the sources of the deterioration in employment in Taiwan during the past decade. The application of the two-factor fixed-effects estimation approach leads to two main findings. First, wide regional...