Select Questions

Chapter 8

1. In the two-factor design shown in the summary table below, there was/were __________ level(s) of Factor A, Drug.
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
        
2. In a __________ design, each subject receives all the treatments; in a _________ design, each subject receives only one treatment.
        
3. When factors such as age and sex, which are based upon characteristics of subjects, are used as a factor in a factorial design, __________.
        
4. Counterbalancing is a technique that can be used for:
        
5. In a within-subjects design, the most likely threat to internal validity is __________.
        
6. In an experimental design, subjects receive all treatments, according to a predetermined order. The design is a __________ design.
        
7. In a between-subjects design, a possible threat to internal validity is _________.
        
8. Most people thrive on a diet containing phenylalanine; only the rare people with phenylketonuria suffer brain damage because of it. This is an example of a(n):
        
9. A(n) __________ occurs when the effect of one variable, X, on another variable, Y, depends upon a third variable, Z.
        
10. Factorial designs are used when the researcher wishes to measure the effect of an independent variable __________.
        
11. The degrees of freedom associated with the main effects and interaction in an analysis of variance depend on:
        
12. In a between-subjects design, each subject receives __________.