Table 5.
Spearman‑Brown coefficients between 1-, 3-, 7-, and 10-min samples and 20-min samples by group (TL, DLD).
| Measure | Group | 1 min | 3 min | 7 min | 10 min |
|---|---|---|---|---|---|
| Number of total utterances | TL | .88 | .95 | .97 | .97 |
| DLD | .80 | .91 | .95 | .97 | |
| Words per minute | TL | .79 | .90 | .96 | .96 |
| DLD | .75 | .91 | .95 | .98 | |
| Number of different words | TL | .71 | .88 | .95 | .96 |
| DLD | .80 | .95 | .97 | .98 | |
| MLU | TL | −.36 | .64 | .93 | .96 |
| DLD | .55 | .75 | .91 | .96 | |
| Percentage of maze words | TL | .51 | .19 | .85 | .87 |
| DLD | .63 | .43 | .55 | .90 | |
| Errors and omissions | TL | .57 | .50 | .63 | .70 |
| DLD | .73 | .91 | .92 | .95 | |
| Percent grammatical utterances | TL | .66 | .46 | .67 | .81 |
| DLD | .53 | .74 | .90 | .94 | |
| Subordination index | TL | .58 | .30 | .73 | .92 |
| DLD | .21 | .56 | .88 | .96 |
Note. Values in bold indicate ρ ≥ .90. TL = typical language; DLD = developmental language disorder; MLU = mean length of utterance.