Nicki posted on Wednesday, May 24, 2006 - 12:38 am
First, I must thank you all for your tremendous efforts at providing free and extensive access to your teachings--they have substatially enhanced my knowledge of these subjects and your program.
Second, I have been struggling to find examples of the kind of model I am attempting to test. I have downloaded several articles from your site and examined the Mplus examples, but I don't seem to find "exactly" what I am looking for. Would you please direct me to an article or example that might help me better understand how to: examine interactions among continuous observed predictors of zero-inflated count outcomes over time? The interpretation of LGCM in ZIP models is difficult already (for me), but I am really stuggling to understand how I might examine/interpret interactions in this context. Thank you so much for your time and effort, Nicki
Thank you for your response. Do you know of any references I might consult to see how significant interactions in the prediction of level, growth, level#1, and growth#1 might be described and discussed? I would greatly appreciate some materials to reference. My outcomes are delinquency and substance use (very zero-inflated in this sample). Thank you again for your time.
Thank you, Linda. I have the Curran and Aiken & West references (I've done interactions in regression). I'll look at the Long one as well. I think I just need to spend some time with it re: categorical variables--somehow in the ZIP terms I get lost. I really appreciate you assuring me that the concepts are the same. Thank you, Nicki