Discussion#7 Fall 21 - Discussion Group 1

From1218 - PSY3211 - & Research Methods and Data Analysis in Psychology I - Sections RVAA & RVDA - Fall 2021

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This discussion assignment is related to your individual assignment#7

Although we won't cover post hoc tests in this course, we will in Methods II. I want to prepare you for them a bit right now. Below is a table that shows computer output for a Tukey Post-Hoc test for the ANOVA you just calculated for your Individual Assignment#7 (comparing the text message group, the phone conversation group, and the video chat group on their ratings of closeness to their friends).

1. Post a comment in which you state:

Based on the significance of each comparison in the table above, which groups do you think significantly differed from each other?You may have to spend some time looking at the table and trying to interpret what each column means. It's okay if you get this wrong, try your best to figure it out and then work it out with your group members.

2. Reply to one classmate to:

State whether you agree or disagree with their interpretation of the Tukey Post-Hoc Comparison Table. Were they correct in their interpretation of which groups differed? Why or why not? If you think they were wrong, explain how you got the correct answer. How do you know? If they were right, explain how you know they are right? How did you get the correct answer?

Multiple Comparisons Dependent Variable: FeelingOfCloseness Tukey HSD (1) (J) 95% Confidence Interval ConversationMod ConversationMod Mean Difference ality ality ( 1-J) Std. Error Sig. Lower Bound Upper Bound text video chat -7.20000" 1.61566 .000 -11.2059 -3.1941 phone convo -4.20000" 1.61566 .038 -8.2059 -.1941 video chat text 7.20000" 1.61566 .000 3.1941 11.2059 phone convo 3.00000 1.61566 .171 -1.0059 7.0059 phone convo text 4.20000 1.61566 038 1941 8.2059 video chat -3.00000 1.61566 .171 -7.0059 1.0059 *. The mean difference is significant at the 0.05 level