Table 3.

Wilcoxon rank sum test for differences across semantic categories

Semantic category	Vocabulary size	Mean ASD	Mean LT	Mean TT	ASD vs TT			ASD vs LT			TT vs LT
					W	p	d	W	p	d	W	p	d
Animals	1–25 words	0.055	0.11	0.13	16,696	< .001	0.3	4309.5	< .05	0.4	194,996.5	< .05	0.2
	26–50 words	0.087	0.083	0.11	6392	> .05	–	784.5	> .05	–	43,113	< .001	0.3
Small Household Items	1–25 words	0.013	0.024	0.037	22,106.5	< .05	0.2	5697	> .05	–	204,735.5	< .001	0.2
	26–50 words	0.016	0.025	0.044	4594.5	< .01	0.3	649	> .05	–	44,014.5	< .001	0.3
Toys	26–50 words	0.054	0.046	0.067	6762	> .05	–	910	> .05	–	44,596.5	< .001	0.3
	51–75 words	0.043	0.049	0.059	1997	> .05	–	322	> .05	–	17,341	< .01	0.3
Vehicles	26–50 words	0.041	0.049	0.025	10,798.5	> .05	–	781.5	> .05	–	25,856	< .05	0.2
	101–150 words	0.039	0.048	0.035	3238.5	> .05	–	184.5	> .05	–	5333.5	< .01	0.3

Results obtained from post-hoc Wilcoxon rank sum tests for the four semantic categories that showed significant differences between the groups: Animals, Small Household Items, Toys and Vehicles. Groups compared in the analysis are the ASD group, LT (Late talker) group, and TT (Typical talker) group. Only the vocabulary bins that were significant are displayed. Full results for all vocabularies can be found in Online Appendix A, Table A2. All p-values were firstly corrected using the BH method then corrected again using the Bonferroni method (correcting for comparisons across 22 semantic categories)