Select Questions

Chapter 8

1. When factors such as age and sex, which are based upon characteristics of subjects, are used as a factor in a factorial design, __________.
        
2. The statistical test used to analyze the factorial design is called the __________.
        
3. In a within-subjects design ___________.
        
4. See the summary table below. In the analysis of this two-factor design, __________ F test(s) was/were computed.
Table
Analysis of Variance
Summary Table for Depression Scores
Source              df       F
A = Drug Th         1      1.86
B = Cog Beh Th     1     12.23*
A x B                  1       2.03
Error                30
* p < .05
        
5. A(n) __________ occurs when the effect of one variable, X, on another variable, Y, depends upon a third variable, Z.
        
6. A(n) ______ occurs when the effect of one variable, A, on another variable, X, depends on a third variable, B.
        
7. A __________ design is a design with two or more independent variables, in which the complete set of treatments is defined by the product of the levels of the independent variables.
        
8. An experiment with two independent variables, each of which has two levels, in which all combinations of treatments are included, is called a(n) ________ design.
        
9. In a two-factor design, the number of F tests performed is:
        
10. Experiments which test for interactions must include at a minimum __________.
        
11. The design that best controls for individual differences between subjects, using the fewest number of subjects, is the __________.
        
12. In a factorial design, subjects are matched on IQ and then one of each pair is randomly assigned to one of the treatments; the design is a __________.