Hi,

I'm getting the error message 'vectors must be the same lengths' when running my factorial design.

I am doing an FIR analysis and running a 2 (group) x 3 (condition) x 10 (scan) ANOVA.

I get this message when I put in all the subjects (20 and 23) respectively.

However it works when I put in less subjects (3 and 4 per group), so the design itself is fine. I've checked all the con images and everything is set up properly.

Does anyone have any suggestions for what to do to get around this problem?

Many thanks

Nick