Warren randomly assigned 60 participants to describe a positive childhood memory, a negative childhood memory, or a neutral childhood memory and then complete a mood questionnaire. Warrens wants the overall differences between groups. Which statistic is appropriate to use?

Question

Quizplus · Accepted Answer

A one-way ANOVA is appropriate for comparing the means of three or more independent groups, which is the case in Warren's study. It will allow him to test whether there are overall differences between the groups in terms of mood based on the childhood memories described. An independent samples t-test would only compare two groups, and planned contrasts and post-hoc tests are used after finding significant differences in an ANOVA.

Warren Randomly Assigned 60 Participants to Describe a Positive Childhood