Question

6. Typically, when comparing a within-subjects design to a between-groups design which of the following describe their differences in error variance? a. Within-subjects designs results in less error variance than between-groups. b. A within-subjects design results in more error variance than a between-groups design. C. A within-subjects design results in the same amount of error variance as a between-groups design d. There is no error variance in a within-subjects design, whereas a between- groups design does present some error variance. 7. In an independent groups design, a separate group of people serves as the control group. In a repeated measure design a. there is no control condition. b. subjects serve as their own control. c. test-retest reliability is the main goal of the research. d. all participants take part in only one condition of the experiment. 8. A pretest-posttest design may be best described as one in which each participant a. receives every possible order of all of the conditions. b. is tested before and after an intervention or manipulation. c. is tested three or more times in each experimental condition. d. is tested in either the pretest condition or the posttest condition, but not both. 9. ABBA counterbalancing is probably the only practical type of a. mixed factorial design. b. between-subjects design. C. complete within-subjects design. d. incomplete within-subjects design. 10. Carryover in which the participant's performance improves with retesting is called a. a practice effect. c a ceiling effect. b. a fatigue effect d. a history effect. 11. In a study in which there are three conditions (A, B, and C) the researcher intends to use a form of block randomization. Which of the following constitutes a block? а. АВС b. AAA c. ABCB d. AAABBBccc

Answer 1

6 a.

Within subject design results in less error variance than between subject design.

That is why withinin subject design have more power than between subject design. In within subject design the each subject uses different interface whereas between subject design each subject uses only single interface.