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Centering and interaction |
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cc0212 posted on Friday, September 19, 2014 - 2:03 pm
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Hi, I'm testing a mediation model. I have three mediators. Two dummy variables and their interaction term. I also want to group mean center all predictors and mediators. Should l compute the interaction term before or after centering the two mediators? Thank you! |
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Centering of mediators should be done before creating the interaction term. |
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