d SJ4-3 st0063_1. Computing interaction effects and standard ... d Computing interaction effects and standard errors in logit d and probit models d by Edward C. Norton, University of North Carolina at Chapel Hill, USA d Hua Wang, University of North Carolina at Chapel Hill, USA d Chunrong Ai, University of Florida, USA, and Tsinghua d University, China d Support: edward_norton@@unc.edu d After installation, type help ^inteff^ f st0063_1/inteff.ado f st0063_1/inteff.hlp f st0063_1/logit_cc.ado f st0063_1/logit_cd.ado f st0063_1/logit_dd.ado f st0063_1/probit_cc.ado f st0063_1/probit_cd.ado f st0063_1/probit_dd.ado