The estimation of empirical models is essential to public policy analysis and social science research. Ordinary Least Squares (OLS) regression analysis is the most frequently used empirical model, and ...

Sociological Forum, Vol. 23, No. 4 (Dec., 2008), pp. 755-785 (31 pages) In the United States, voter turnout rates have been declining for the last 4 decades; however, this pattern differs ...

Many researchers have dealt with potential selectivity bias in developing country wage equations by employing Heckman's (1979) two-step method or related techniques, despite the potential for such ...