The following list of journal articles and books provide extended reading on topics covered in chapter 35 in the second edition. Please note that journal articles are free to access, whereas book extracts (denoted by methods.sagepub.com URLs) require your university to have a subscription to SAGE Research Methods.​

Van Horn, M. L., Jaki, T., Masyn, K., Howe, G., Feaster, D. J., Lamont, A. E., . . . Kim, M. (2015). Evaluating differential effects using regression interactions and regression mixture models. Educational and Psychological Measurement, 75(4), 677-714.
This article focuses on understanding regression mixture models, which are relatively new statistical methods for assessing differential effects by comparing results to using an interactive term in linear regression.