An application for fitting multinomial models to frequency data, based on the "General Processing Tree" algorithm proposed by Hu and Batchelder (1994).
AppleTree is freeware. If you have any questions, comments, feature requests, or if you found any bugs, you can contact me under the following address:
Rothkegel, R. (1996-1999). AppleTree [Computer Program]. Trier, Germany: University of Trier.
Rothkegel, R. (in press). AppleTree: A multinomial processing tree modeling program for Macintosh computers. Behavior Research Methods, Instruments, & Computers.