Achim, thank you very much for your help, this really cleared up a number of issues.
As for the differences in results between the party and partykit implementations of ctree, I guess that the situation is indeed as you assumed. Four out of five variables have p-values <2.2e-16. (However, it is not the first of these variables that is selected but the one in the second column.) I will just continue using the newer implementation. -- Christopher -- View this message in context: http://r.789695.n4.nabble.com/Trees-and-Forests-with-packages-party-vs-partykit-Different-results-tp4712214p4712539.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.