theory and methodology
methods
Introduction A multitrait-multimethod matrix (MTMM) refers to a matrix of correlations among multiple theoretical/empirical constructs (traits), each of which is defined operationally by a common set of measurement procedures (methods). Convergence and divergence principle provide a framework underlying the use of MTMM matrices in construct validation research: different operationalizations of a particular construct are expected to measure that construct (convergence) whereas constructs with different labels are expected to refer to different theoretical entities when measured by the same method (divergence). [Source: Encyclopedia of Psychological Assessment; Multitrait-Multimethod Matrices]
multitrait-multimethod matrices