The unique environmental simplex model with innovation and transmission terms fitted the data well (model 3a: χ2 (9) = 7.78, p = 0.557). Fixing the transmission terms at zero and thereby imposing the matrix with unique environmental factors to be diagonal worsened the model fit (model 3b: χ2 (5) = 26.66, p < .001). This indicates that unique environmental covariance is present over time and shows that both stable and dynamic unique environmental influences impact the CAGE.
