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### Chapter EightTwo-way between-subjects design

#### 8.1Combining two independent variables factorially

##### 8.1.1Naming the design

In Chapter 6, we discussed a between-subjects design that contained a single independent variable (preparation time for the SAT). However, we are not limited to studying the effects of just one independent variable in a research design. In this chapter, we will deal with the inclusion of a second independent variable (note that we still have only one dependent variable). A design containing more than one independent variable is known as a factorial design when the variables are combined in a manner described in Section 8.1.2. When those independent variables are between-subjects variables, the design is called a between-subjects ...

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