Growth of diversity of key consonants used in communication (CSBS Subscale 11 weighted raw score) as a function of three values on the value-added predictors. The structural equation used to generate the illustrated trajectories was:
eDKCC = −1.55-10(Time)+2.11(PLR)+9.71(COMM)+.13(TIME*PRL)+.33(TIME*COMM).
In above formula, estimated DKCC is “eDKCC”, T5-centered time is “TIME,” parent linguistic responses is “PLR,” and intentional communication is “COMM.”