Table 2.
Wilcoxon rank sum test for nouns and verbs
| Syntactic class | 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 | |||||
| Nouns | 1–25 words | 0.32 | 0.32 | 0.35 | 24,914.5 | > .05 | – | 5707.5 | > .05 | – | 193,148.5 | < .05 | 0.1 |
| 26–50 words | 0.40 | 0.38 | 0.44 | 7179.0 | > .05 | – | 834 | > .05 | – | 42,368 | < 0.001 | 0.3 | |
| 51–75 words | 0.50 | 0.45 | 0.50 | 3005.0 | > .05 | – | 413.5 | > .05 | – | 17,023 | < 0.01 | 0.3 | |
| Verbs | 1–25 words | 0.11 | 0.025 | 0.018 | 40,113.0 | < .001 | 0.2 | 8092.5 | < .001 | 0.4 | 169,001 | > .05 | – |
| 26–50 words | 0.084 | 0.042 | 0.031 | 15,090.0 | < .001 | 0.4 | 1221.5 | < .001 | 0.9 | 28,761 | > .05 | – | |
| 51–75 words | 0.085 | 0.059 | 0.046 | 4167.5 | < .05 | 0.2 | 423.5 | > .05 | - | 10,004 | < .05 | 0.3 | |
Groups considered in the analysis are the ASD group, LT (Late talker) group, and TT (Typical talker) group. Only the three vocabulary bins that were significant are displayed. Full results for all vocabularies can be found in Online Appendix A, Table A1. All p-values were first corrected using the BH method then corrected again using the Bonferroni method (i.e., corrections accounted for comparisons for the three syntactic classes)