Which of the following is a characteristic of a well-written research hypothesis?
a) asks a pertinent question
b) based on researcher's instinct
c) should be long and detailed
d) is testable
A properly designed single-case interaction design will evaluate the effects of each treatment (B and C) alone and in combination. Which of the following will allow this?
a. Participant 1: A-B-A-B-BC
Participant 2: A-C-A-C-BC
b. Participant 1: A-B-A-BC
Participant 2: A-C-A-BC
c. Participant 1: A-B-A-B-BC
d. Participant 1: A-C-A-C-BC
In a between-participants posttest-only design
a. each participant is tested in only one treatment condition.
b. each participant experiences all treatment conditions.
c. pairs of matched participants experience the same treatment conditions.
d. all of the above.
Although the change decreases statistical power, you can decrease the risk of making a Type I error simply by
a. examining extraneous variables.
b. making your significance (i.e., alpha) level smaller (e.g., change it from .05 to .01).
c. adding more dependent variables to your study.
d. adjust your degrees of freedom.
Which of the following is an example of a null hypothesis?
a) There is a relationship between the season of the year and a person's affect.
b) Ho: XA XB
c) There is a difference in symptoms between Group A and Group B.
d) Ho: A = B
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