A researcher measures anxiety levels among participants in the presence and absence of a fearful stimulus. If the same participants are observed in each group, then what type of statistical design is appropriate for this study?

A. a related-samples t test
B. a one-way between-subjects ANOVA
C. a one-way within-subjects ANOVA
D. a related-samples t test and a one-way within-subjects ANOVA


Ans: D

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