Dear R-helpers,
Jones & Kenward (2003)? discuss balanced designs with many periods
(p). It is my impression the algorithmic design packages (AlgDesign,
crossdes, conf.design) in R do not handle cases in which the number of
treatments (t) is < p. Am I mistaken?
To be concrete: I am designing an experiment with t = 12 in a
factorial design (3x4) with p = [12,18] (we have our subjects for an
hour, which allows us about 18 blocks). We can run in the ballpark of
30 subjects.
Pointers welcome.
_______________________
? @BOOK{JonesKenward2003,
title = {Design and analysis of cross-over trial},
publisher = {Chapman \& Hall/CRC},
year = {2003},
address = {Boca Raton, FL, USA},
edition = {2nd},
author = {Byron Jones and Michael G. Kenward}
}
_____________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
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