Am trying to run a two-part (categorical/continuous growth) model over 3 developmentally distinct periods (late adolescence 4 waves, emerging adulthood 5 waves, and early adulthood 3 waves). However, I get a memory error. Am assuming that the model is too large? If this is the case what might be some acceptable alternative ways to run the analyses? Have attmpted to run as a single "piece" with all waves but this model has not fit the data (at least using AMOS) and when it comes to gateway substances. Thoughts?
It sounds like you require numerical integration to estimate your model if you get a memory message. If this is the case, I would fix the variances of all but the intercept growth factor to zero and use INTEGRATION=7; If this is not the case, please send your input, data, output, and license number to firstname.lastname@example.org.