Lexical Entropy ( LexH ) -0.26 1.00 0.01 -0.40 0.43 -0.38 -0.03 0.02 0.11 -0.29 Syntactic Surprisal ( SynS ) 0.00 0.01 1.00 -0.12 0.08 0.18 0.77 0.21 0.38 -0.03 Lexical Surprisal ( LexS ) 0.24 -0.40 -0.12 1.00 -0.81 0.87 -0.10 -0.20 -0.35 0.64 Unigram Frequency ( Freq ) -0.24 0.43 0.08 -0.81 1.00 -0.69 0.02 0.18 0.31 -0.72