Table 8.

Changes in LS in expository writing over one academic year.

Measure	Exp. 1	Exp. 2	Exp. 3	Exp. 4	F(3,162)
	Mean (SD)	Mean (SD)	Mean (SD)	Mean (SD)
Frequency
Bigram	0.178 (0.062)	0.230 (0.066)	0.197 (0.066)	0.224 (0.061)	2.993*
AWL	0.035 (0.014)	0.067 (0.021)	0.033 (0.014)	0.050 (0.020)	66.356*
Range
KFR_CW	13.046 (0.439)	12.682 (0.457)	12.853 (0.460)	12.990 (0.451)	12.015*
Word property
Familiarity	580.079	575.695	580.68	583.396	29.330*
	−5.533	−5.119	−5.104	−5.185
Meaningfulness	352.816 (7.221)	349.781 (8.084)	358.387 (7.680)	353.059	12.717*
				−9.043
Word specificity
Polysemy	11.703 (1.654)	11.427 (1.473)	12.656 (1.804)	11.199 (1.331)	11.668*
Hypernymy	4.046 (0.223)	4.372 (0.262)	4.236 (0.274)	4.225 (0.262)	17.689*

Exp., Expository; *p < 0.05.