My Math Forum Help needed with 3 condition mixed design stats (ANOVA / T-
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April 7th, 2013, 01:13 AM   #1
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Help needed with 3 condition mixed design stats (ANOVA / T-

Hi,

I have conducted an experiment on short-term media violence using a GSR machine (measures physiological response) and questionnaire. The aim is to see if there is a correlation between the amount of violence and the response (GSR & questionnaire). It's a mixed design with all participants doing the no violence condition, 15 doing the moderate and 9 doing the mild conditions.

There are two groups ('No Violence / Mild Violence' & 'No Violence / Moderate Violence'). The repeated measure is the 'No Violence' condition. 'Mild' and 'Moderate' violence are independent. The issue of order effects has been addressed and subjects were randomly allocated to groups.

What I want to do is compare the data from the three conditions to see if there is a statistically significant difference (at 5%) between each condition. I'm having trouble analysing the data (see attached spreadsheet) due to the mixed nature. I have been trying to do a 3 way ANOVA but have had no luck. Can anyone help?

FYI - My hypothesis is that the greater the level of violence the greater the effect on GSR scores
[attachment=1:1mmd37pl]MAIN RESULTSanalysis.xlsx[/attachment:1mmd37pl]
[attachment=0:1mmd37pl]GSR-results.jpg[/attachment:1mmd37pl]
Attached Images
 GSR-results.jpg (97.9 KB, 207 views)
Attached Files
 MAIN RESULTSanalysis.xlsx (19.8 KB, 11 views)

 Tags anova, condition, design, mixed, needed, stats

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