Pairwise correlation and density distributions of vocabulary size (CDI_Percentile), structure (GCC), and word recognition (LogGaze) in semantically related (SR) and semantically unrelated (SU) trials at 18 and 24 months with CELF standard score (CELF_CLS_StdScore) at 36 months. Lower left trial displays scatterplot with fitted line and ellipses, and values in upper right triangle indicate the correlation coefficient of this relation. Values along the diagonal illustrate the histogram and density estimation of values for each variable. Asterisks for correlation coefficients indicate: * − p<.05, ** − p<.01, *** p<.001