A minimum of 150 words each question and References (questions #1 – 7) KEEP QUESTION WITH ANSWER EACH QUESTIONS NEED TO HAVE A SCHOLARY SOURCE with a Hyperlink


1. 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.


2. Discuss some of the advantages of using a between-subjects design.



3. Compare and contrast:

· Between-subjects with within-subjects designs

· 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?

4. Discuss how to minimize the problems of fatigue, boredom, or practice effects in within-subject designs.


5. 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?



6. Explain the purpose of a null hypothesis. Why are both a research/alternative hypothesis and a null hypothesis necessary in statistics?


7. How can internal and external validity be increased in an experiment?