In a high-risk study, the researcher must provide the participants with
a. a debriefing.
b. an appropriate phone number in case of problems that persist after participation in the research.
c. a guarantee of confidentiality.
d. all of these
Question 2
Wilcoxon rank-sum test is to _____ as Wilcoxon matched-pairs signed-ranks T test is to _____.
a. ordinal data; nominal data
b. interval data, ordinal data
c. between-subject design; within-subjects design
d. within-subjects design; between-subjects design