1. The _______ test is used to test for differences between the means of two groups in a study in which the subjects are randomly sampled from a large (actually infinite) population. This test is a good approximation to the randomization test.
2. A researcher who rejects the null hypothesis when, in fact, it is true has .
3. The identical twin study is an example of which of the following designs?
4. Fisher used the records collected over the previous 19 years of the wheat yields of plots Al and A2 without fertilizer:
5. Conducting a pilot study is one way to:
6. In psychology, the __________ design is to between-subjects as the __________ design is to within- subjects.
7. Held and Hein's study of kittens in which one kitten's movement controlled the visual stimulation received by the other is an example of a ________ design.
8. Using homogenous subjects, more reliable measures, and uniform procedures in applying the treatment are all strategies to reduce __________.
9. A social psychologist is concerned with the violence and aggression in society. She designs a treatment program that includes educational videos, role playing of problem situations, and peer modeling. She is concerned that a person's hostility level will influence how they respond to her program, so she tests her subjects on the Buss Durkee Hostility Inventory and classifies her subjects into low, medium, and high hostility groups. She then randomly assigns subjects in each group to either the treatment program or a control group. This researcher is using a __________ design.
10. If a researcher who fertilized one plot of land, Al, and did not fertilize a second plot, A2, later found that Al produced more wheat than A2, Mill's method of difference would lead to the conclusion that the fertilizer produced the difference. Unfortunately, we couldn't be confident of this conclusion because:
11. Alternating the treatments in successive plots (Al, A2, Al, A2, etc.) of a randomized blocks design would be an example of:
12. In randomized blocks designs in psychology, the best parallel to adjacent plots would be:
