Assignment
i. Lay out the design for two between-subjects experiments: a) an experiment involving an experimental group and a control group, and b) a factorial design with three independent variables that have three, and two levels respectively.
ii. Discuss some of the advantages of using a between-subjects design.
iii. Compare and contrast:
a) Between-subjects with within-subjects designs
b) Small N designs with large N designs.
In what circumstances would you use the within-subjects design and in what circumstances would you use the large N design?
iv. Discuss how to minimize the problems of fatigue, boredom, or practice effects in within-subject designs.
v. Since obtaining statistical significance is easier to obtain with a directional hypothesis (one-tailed test) than with a non-directional hypothesis (two-tailed test), why would anyone ever design a study with a nondirectional hypothesis?
vi. Explain the purpose of a null hypothesis. Why are both a research/alternative hypothesis and a null hypothesis necessary in statistics?
vii. How can internal and external validity be increased in an experiment?
Format your assignment according to the following formatting requirements:
o The answer should be typed, using Times New Roman font (size 12), double spaced, with one-inch margins on all sides.
o The response also includes a cover page containing the title of the assignment, the student's name, the course title, and the date. The cover page is not included in the required page length.
o Also include a reference page. The Citations and references must follow APA format. The reference page is not included in the required page length.