Table 1.
Comparison of IPSyn-R and IPSyn-O mean scores.
| Subscale | Maximum points |
M (SD) at the age of 2;6 years;months |
M (SD) at the age of 3;6 years;months |
||
|---|---|---|---|---|---|
| IPSyn-R | IPSyn-O | IPSyn-R | IPSyn-O | ||
| NP | 22 a | 19.0 (2.2) | 20.1 (1.9) | 18.3 (1.6) | 19.8 (1.8) |
| VP | 34 | 24.1 (2.5) | 25.0 (2.3) | 24.4 (2.8) | 24.6 (2.7) |
| Q/N | 22 | 13.4 (2.0) | 13.6 (2.2) | 13.3 (3.7) | 13.7 (3.8) |
| SS | 40 | 18.0 (3.8) | 18.1 (3.9) | 23.0 (3.9) | 23.2 (4.0) |
| Total score | 118 a | 74.5 (7.7) | 76.8 (7.5) | 79.0 (8.2) | 81.3 (8.5) |
Note. n = 10. IPSyn-R = revised Index of Productive Syntax; IPSyn-O = original Index of Productive Syntax; NP = noun phrases; VP = verb phrases; Q/N = questions and negations; SS = sentence structures.
a
Maximum points were 24 for NP and 120 total in the original scoring criteria.