Table B2.
Results of preliminary comparison of stuttered and fluent utterances on standard expressive language measures.
| Variable | Stutt |
Fluent |
Mean difference (SD) | 95% CI |
t | df | Sig. (two-tailed) | |
|---|---|---|---|---|---|---|---|---|
| M (SD) | Lower | Upper | ||||||
| MLU in morphemes | 3.54 (1.35) | 3.46 (1.34) | 0.07 (1.55) | –0.61 | 0.76 | 0.22 | 21 | .83 |
| Number of different words | 50.09 (14.13) | 49.64 (13.67) | 0.46 (18.06) | –7.55 | 8.46 | 0.12 | 21 | .91 |
| Vocabulary diversity | 24.74 (11.46) | 26.95 (12.46) | –2.21 (18.16) | –10.26 | 5.84 | –0.57 | 21 | .57 |
| Brown's morphemes stuttering | ||||||||
| Present participle –ing | 3.50 (2.40) | 3.59(2.95) | –0.09 (4.04) | –1.88 | 1.70 | –0.11 | 21 | .92 |
| Regular past tense | 1.23 (1.15) | 1.50 (1.47) | –0.27 (1.88) | –1.10 | 0.56 | –0.68 | 21 | .50 |
| Copula | 1.05 (1.17) | 1.64 (1.56) | –0.59 (2.15) | –1.55 | 0.36 | –1.29 | 21 | .21 |
| Determiner–article | 10.82 (6.02) | 9.95 (5.79) | 0.86 (9.47) | –3.34 | 5.06 | 0.43 | 21 | .67 |
| Uncontracted auxiliary | 3.36 (3.76) | 2.86 (2.82) | 0.50 (4.37) | –1.44 | 2.44 | 0.54 | 21 | .60 |
Note. CI = confidence interval; Sig. = significance; MLU = mean length of utterance; Stutt = stuttering; Flu = fluent.