Combining items on multiple dimensions PreviousNext
Mplus Discussion > Structural Equation Modeling >
 Isaac posted on Friday, April 01, 2011 - 6:51 am
Hi Muthen's,
I was at the training in Baltimore last week. It was really a lot of fun and incredibly helpful in terms of generating new ideas.
Linda, there's something you mentioned very briefly near the end of the last day and I wanted to follow up with you. You stated that when combining items from a scale to create a mean score, those items have to all function on the same dimension. Items measuing multiple dimensions of a construct cant be totalled in this way. I understand this conceptually, but could you point me to an article or two that makes this point explicitly. It fits in very well for a paper I'm working on right now.

Thanks again for last week. It really was great.
 Linda K. Muthen posted on Friday, April 01, 2011 - 7:33 am
You should be able to find something by Googling the IRT literature.
 Isaac posted on Friday, April 01, 2011 - 10:15 am
Thanks Linda
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