Table 5.

Changes in LS in argumentative writing over one academic year.

Measure	Arg. 1	Arg. 2	Arg. 3	Arg. 4	F(3,162)
	Mean (SD)	Mean (SD)	Mean (SD)	Mean (SD)
Frequency
AWL	0.031 (0.015)	0.053 (0.024)	0.030 (0.013)	0.066 (0.019)	91.766*
Bigram	0.179 (0.042)	0.243 (0.091)	0.192 (0.068)	0.219 (0.076)	11.306*
Range
KFR_CW	13.466 (0.361)	12.392 (0.494)	12.683 (0.454)	12.917 (0.439)	101.879*
Word property
Familiarity	581.435	578.115	583.226	578.93	21.021*
	−3.997	−5.25	−5.08	−5.496
Meaningfulness	356.861	351.245	362.537	344.576	63.969*
	−6.94	−11.51	−9.743	−8.378
Word specificity
Polysemy	11.029 (1.265)	10.707 (1.610)	10.154 (1.354)	11.102 (1.323)	5.739*
Hypernymy	3.917 (0.254)	4.274 (0.280)	4.201 (0.232)	4.183 (0.294)	26.005*

Arg., argumentative; *p < 0.05.