I have run an experiment that uses a 2 (between) x 2 (within) x 2 (within) design. There are 16 observations per participant.

However, one of the within-subjects variables only applies to one of the between-subjects groups.

Thus, I only have 6 means, and not the 8 that would have resulted from a full factorial design.

How do I approach the data analysis?

My initial hunch was to do two 2 (between) x 2 (within) ANOVA for each level of the incomplete within-subject variable.

However, this does not entirely feel right to me.

Is there a more appropriate method?

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