Table 4.
Measure | Bimodal (14) |
No bimodal (19) |
t | p | Cohen's d | ||
---|---|---|---|---|---|---|---|
M | SD | M | SD | ||||
Phonological | |||||||
Pig Latin | 77.8 | 27.4 | 44.1 | 42.2 | 2.61 | .014 | 0.95 |
Backward words | 62.1 | 20.3 | 49.8 | 29.4 | 1.34 | NS | 0.49 |
Final consonant choice | 79.2 | 10.9 | 59.2 | 20.8 | 3.27 | .003 | 1.20 |
Word reading | 108 | 17 | 101 | 18 | 1.09 | NS | 0.38 |
Grammatical judgments | 97 | 13 | 87 | 15 | 1.94 | .061 | 0.71 |
Verbal working memory | 53.8 | 13.7 | 44.6 | 18.3 | 1.58 | NS | 0.57 |
Lexical | |||||||
Expressive vocabulary | 113 | 17 | 99 | 15 | 2.47 | .019 | 0.86 |
Bound morphemes | 88 | 18 | 81 | 18 | 1.01 | NS | 0.35 |
Sentence comprehension | 107 | 15 | 96 | 17 | 1.98 | .057 | 0.70 |
Morphosyntactic | |||||||
Pronouns | 165 | 20 | 154 | 25 | 1.29 | NS | 0.46 |
Mean length of utterance | 9.3 | 1.0 | 9.2 | 1.1 | 0.38 | NS | 0.14 |
Conjunctions | 114 | 22 | 98 | 32 | 1.64 | NS | 0.59 |
Note. Degrees of freedom = 31 for all tests. NS = not significant.