I have been advised to run a MANOVA for the data I have collected for my thesis. In trying to do this, I have encountered some issues.
I am analyzing 4 IVs: Personality trait X, split into two levels (high and low), writing type (narrative and informational), emotional content (positive and negative) and gender (male, female and nonbinary). All IVs are between subjects. I have two scale DVs. I have been trying to run a multivariate analysis. However, each time I do, the output shows error: post-hoc tests are not performed for *insert variable* because there are fewer than three groups.
I am really not sure what to do, and would appreciate any advice on this matter. I am wondering if I should be using a different type of analysis instead of Multivariate? Additionally, my output is not displaying any analysis for the "informational" groups, likely because they were measured on only one of the DV's and not the other. I am confused about how to conduct this analysis.
Unless you’ve got a very big sample it is likely the non-binary gender group is small. This could mean you may have some cells of n = 1 or zero. Try the analysis with gender limited to male and female.
Stephen Thomas Osika It's a typical error when your IV has less than 3 groups or dimensions. So, you cannot obtain the comparison results for IVs with 2 dimensions. As far as I know, you should use syntax in order to handle with this error. In Multivariate section, you click on "paste" after chosing everything you want to see in results.
In the syntax page, you'll see some commands that start with /emmeans incluing your IVs. Consider that your IVs are X1 and X2 with 2 dimensions and it is written /emmeans=tables (X1*X2). All you do is to add COMPARE(X1 or X2, you choose this what kind of comparison you would like) ADJ(LSD) in the end of this line. Afterwards, you run the analysis and probably see the comparison results of IVs with 2 dimensions.
A simple step can be carried out- please check once again that you have coded and entered data correctly in the spss datasheet
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