Table 5.
Means and standard deviations for syntactic complexity and lexical diversity measures.
| Measure | 5-year-olds |
8-year-olds |
||
|---|---|---|---|---|
| M | SD | M | SD | |
| Syntactic | ||||
| Clausal density | 1.25 | 0.28 | 1.50 | 0.32 |
| D-Level | 0.78 | 0.67 | 1.39 | 0.85 |
| Mean length of clause | 5.12 | 0.98 | 5.24 | 0.81 |
| Lexical | ||||
| LDensity | 47.45 | 5.62 | 45.69 | 5.06 |
| MATTR | 0.80 | 0.06 | 0.80 | 0.06 |
| NDW |
33.56 |
10.25 |
43.23 |
15.18 |
|
Question–answer |
Narrative |
|||
|
|
M
|
SD
|
M
|
SD
|
| Syntactic | ||||
| Clausal density | 1.36 | 0.36 | 1.40 | 0.28 |
| D-Level | 1.07 | 0.89 | 1.10 | 0.74 |
| Mean length of clause | 4.73 | 0.71 | 5.63 | 0.85 |
| Lexical | ||||
| LDensity | 45.44 | 5.82 | 47.70 | 4.71 |
| MATTR | 0.82 | 0.06 | 0.79 | 0.04 |
| NDW | 38.36 | 14.57 | 38.51 | 13.10 |
Note. D-Level = developmental level; LDensity = lexical density; MATTR = moving average type–token ratio; NDW = number of different words.