ABSTRACT
INTRODUCTION This chapter examines analysis of covariance (ANCOVA), multivariate analysis of covariance (MANCOVA), and regression interaction designs. Analyses in this chapter expand on work in Chapters 6-8 and in some cases continue examples from those chapters. Additional issues include reliability impacts on detection of regression interactions. I present few new formulae because calculations of some effect sizes and other values for the analyses are outside the scope of this text. For details on these calculations, see the work of Tabachnick and Fidell (2007a, 2007b), Cohen et al. (2003), and Aguinis (2004).
