Luo, Wen; Kwok, Oi-Man - In: Sociological Methods & Research 39 (2010) 2, pp. 88-205
As an extension of hierarchical linear models (HLMs), cross-classified random effects models (CCREMs) are used for analyzing multilevel data that do not have strictly hierarchical structures. Proportional reduction in prediction error, a multilevel version of the R2 in ordinary multiple...