APIM with Distinguishable Dyads: MLM Estimation by Interactions David A. Kenny March 25, 2013
You Need to Know APIM (click for webinar) Multilevel Modeling It might help to view the webinar on the two-intercept model.
Example Data Set: Acitelli dyad Distinguishing Variable: Gender Gender_A : Effects coding Husband & Wife: Dummy coding Outcome: Satisfaction (Wife and Husband) Predictor Variable: Other-Positivity (Wife and Husband) How positive the Wife views her Husband, and how positive the Husband views his Wife
Additional Reading Kenny, D. A., Kashy, D. A., & Cook, W. L. Dyadic data analysis. New York: Guilford Press, Chapter 7.