I am running a mancova where each participant received 8 versions of a phishing email that combines 3 factors (A,B,C,AB,AC, BC, ABC, Control). I am measuring the level of risk (4 levels). My covariates are age, gender, and duration in the survey. I would like to know how to create a dummy variable that shows my model the manipulation of factors I am doing, but as all participants received all manipulations I am having some challenges defining my IV.
Hello Erica,
You could treat IV as either: (a) a single factor, having 8 levels, or (b) as three factors, each having two levels (present/absent). The latter form makes it easier to draw inferences about the influence (and potential interaction) of individual factors. Either way, IV(s) is/are within-subjects influence(s).
If you have one outcome score for each of the eight stimulus conditions, then you have a univariate design; if multiple outcome scores per condition, then it is a multivariate design.
Good luck with your work.
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