Hi Everyone! Quick correction to Problem 1.2 on the homework. In the problem we ask you to "Simulate first differences in levels of attention to the campaign when going from the lowest to the highest educational category, holding all other covariates at their means." Holding income at its mean is nonsensical though since its an ordered factor. Zelig will actually hold ordered factors at its median by default (which is what you should do). Most of you probably didn't notice, but it was brought to our attention by a student who was valiantly trying to get Zelig to do what we'd actually said to do. Sorry about that! Brandon _______________________________________________ gov2001-l mailing list gov2001-l(a)lists.fas.harvard.edu http://lists.fas.harvard.edu/mailman/listinfo/gov2001-l