ABSTRACT

Although PAC versions of analyses have been described at the end of most previous chapters, it was noted in each case that many of the more complicated analyses (e.g., simple effects, interaction contrasts) were not available from the PAC menus and that syntax was necessary. For between-subjects designs, instead of using the program MANOVA, the PAC version of SPSS produces syntax for a procedure called UNIANOVA (univariate analysis of variance). For within-subjects designs, PAC produces syntax for a very similar procedure called GLM (general linear model). Although the syntax for both is fairly similar to MANOVA, there are some important differences that are detailed in this chapter. In writing this book, it was assumed that most users will probably prefer to use UNIANOVA and GLM entirely for their PAC capabilities and, for the more complicated analyses requiring syntax, would use MANOVA. Some users, however, may wish to stick to GLM or UNIANOVA throughout, clicking where possible, writing syntax otherwise. This chapter is intended for those users wishing to understand the GLM and UNIANOVA syntax necessary for these more complicated analyses. The chapter begins with the simplest syntax.