O'Brien and Kaiser's Repeated-Measures Data
These contrived repeated-measures data are taken from
O'Brien and Kaiser (1985). The data are from an imaginary study in which
16 female and male subjects, who are divided into three treatments, are measured
at a pretest, postest, and a follow-up session; during each session, they are
measured at five occasions at intervals of one hour. The design, therefore, has
two between-subject and two within-subject factors.
The contrasts for the
treatment factor are set to $-2, 1, 1$ and
$0, -1, 1$. The contrasts for the
gender factor are set to
O'Brien, R. G., and Kaiser, M. K. (1985) MANOVA method for analyzing repeated measures designs: An extensive primer. Psychological Bulletin 97, 316--333, Table 7.
OBrienKaiser contrasts(OBrienKaiser$treatment) contrasts(OBrienKaiser$gender)