7. In a between-subjects study, limiting your sample to females only would be li

ID: 3150504 • Letter: 7

Question

7. In a between-subjects study, limiting your sample to females only would be likely to:

a. help internal validity by eliminating gender as a potential confound

b. lower external validity

c. reduce variability in scores

d. all of these

8. Which of the following is not one of the assumptions of the paired t test?

a. the population of difference scores is normally distributed

b. the samples are independent of each other

c. the two sets of scores have equal variance

d. all of these are assumptions of the paired t test

9. A double-blind study can be used to reduce:

a. external validity c. ceiling and floor effects

b. internal validity d. demand characteristics

10. If you conduct a study in which subjects are tested under 4 different conditions, it would be best to control for order effects by using:

a. partial counterbalancing c. a Solomon 4 group design

b. complete counterbalancing d. matched groups

8. Which of the following is not one of the assumptions of the paired t test?

b. the samples are independent of each other

if we assume independence then no need to test for correlarion

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