Previous chapters discussed the between-subjects and within-subjects design principles and associated experimental designs. This chapter discusses variants using the between- or within-subjects designs as building blocks. First, it is shown how they can be combined with each other in a study and how, depending on the number of variables, several different combinations are possible. A few examples are provided in this section. This is followed by a description of how two nuisance variables can be controlled in a study with one independent variable by using a Latin Square Design. Finally, Model I and Model II specifications are explained in the last section. Since most researchers today use software packages to calculate variance where options can easily be checked or unchecked, it has become deceptively easy to conduct analyses. However, understanding the differences can help the researcher conduct better studies and draw the correct conclusions.
KeywordsRandom Effect Model Anger Expression Tutoring System Flat Screen Immersive Virtual Reality
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