1 .		The one-group posttest-only design, the one-group pretest-posttest design and the nonequivalent posttest-only design have in common
2 .		A control group is needed
3 .		The between- and within- participants designs are distinguished on the basis of
4 .		If I have studied the effect that three dosages, 5mg, 10mg and 15mg, of the drug Prozac has on depressed people and people with an eating disorder and find that the lower dosages are most effective with people with eating disorders and the higher dosages are most effective with people with depression, I have identified
5 .		If I have conducted an experiment that requires me to randomly assign 20 participants to two levels of one independent variable and then all of these 20 participants take all three levels of a second independent variable, I have used what type of design
6 .		Ten people state that they have a headache at 2:00 P.M. and are given aspirin. At 5:00 P.M. they are asked if they have a headache. They all report they do not. The conclusion that aspirin relieves headache is based upon which type of research design?
7 .		Which of the following is required of a good research design?
8 .		The simple randomized participants design uses
9 .		A Factorial Design permits one to test what types of effects that a pretest-posttest design does not.
10 .		Factorial designs have which of the following advantages?
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