Pierre S. posted on Wednesday, December 30, 2015 - 1:52 am
Hi Drs Muthen,
I'd like to clarify whether I have the correct syntax or not.
Background: I have a model with several IVs (observed), say X1, X2, X3, and 1 latent DV (say: Y by y1, y2, y3 - I assume that the measurement model is equal for all respondents). I want to find out whether (a) there are different segments/groups of respondents that differ with regards to their b1, b2 and b3 path coefficients and/or (b) there are different segments/groups of respondents that differ with regards to their b1, b2, b3 AND x1, x2, and x3 (intercepts?).
As far as I understand, I need a finite mixture model, try different numbers of classes (“segments”) and chose the best one based on various criteria (AIC, BIC etc.)
I created this syntax:
Classes = c (2); Analysis: type = mixture; starts = 500 10; !increase once syntax correct
%overall% Y by y1 y2 y3; Y on x1 x2 x3; %c#2% Y on x1 x2 x3;
Questions Q1: Is this syntax correct to identify different segments based on the b1, b2 and b3 path coefficients? Q2: To try whether more groups/segments are ‘better’, I change the number of classes (e.g, to three) and add %c#3% & Y on x1 x2 x3; below – correct? Q3: How should my syntax look like if I want to create my segments based on b1, b2, b3 AND x1, x2, x3?