Mar
12
Don't standardize interaction/moderator effects in multiple regression
This is another quick blog entry related to a query I had today.
In my moderated multiple regression workshop a while back I wrote (on slide 15) "don't use standardized regression coefficients". In the talk itself I briefly mentioned why and directed people to the relevant section of the (excellent) explanation by Kris Preacher:
A primer on interaction effects in multiple linear regression.
I'd like to clarify why standardization is a particularly bad idea in this case. My dislike of 'standardization' is fairly well known, and it goes without saying (I hope) that one reason not to use standardized regression coefficient relates to this. I hope to write about this in detail soon (but check out my BJP article on effect size for further details).
In my moderated multiple regression workshop a while back I wrote (on slide 15) "don't use standardized regression coefficients". In the talk itself I briefly mentioned why and directed people to the relevant section of the (excellent) explanation by Kris Preacher:
A primer on interaction effects in multiple linear regression.
I'd like to clarify why standardization is a particularly bad idea in this case. My dislike of 'standardization' is fairly well known, and it goes without saying (I hope) that one reason not to use standardized regression coefficient relates to this. I hope to write about this in detail soon (but check out my BJP article on effect size for further details).
