Which of the following is NOT a probability sampling method?
a) simple random sampling
b) quota sampling
c) stratified sampling
d) cluster sampling
Suppose you are conducting a factorial study with variables A and B. Your results reveal an interaction effect. This means that
a. variable A is effective in changing performance only if variable B is also effective.
b. the effect of independent variable A depends on what level of independent variable B they experience.
c. one of the variables, A or B, can have an effect on performance only if the other does not.
d. the effects of variable A and of variable B cancel each other out.
While stability is a desirable characteristic in each condition of a single-case experiment,
a. high variability is required in order to change behavior.
b. prolonging conditions to achieve it increases the chances of history and maturation effects.
c. it is more important to finish the experiment on schedule.
d. it only really counts for baseline.
Two trained professionals observe the behavior of children in a classroom. They each rate
observed behaviors using the same form and the number of items that were rated the same is
calculated.
This is an example of which type of reliability?
a) parallel reliability
b) test-retest reliability
c) inter-rater reliability
d) none of the above
If the interaction between interviewer gender and duration of eye contact were significant,
a. the effect of eye contact on liking would differ for the male and female interviewers.
b. the main effects will be significant, too.
c. the main effects will not be significant.
d. the male interviewers will be liked less than the female interviewers.
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