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Ages of first production and first comprehension (Mean, SD) for each wh-question form
| Where questions | Subject questions | Object questions | ||||
|---|---|---|---|---|---|---|
| First P* | First C | First P | First C | First P | First C | |
| ASD | 39.99 (3.64) | 38.88 (3.16) | 43.88 (4.57) | 40.57 (4.38) | 47.03 (6.41) | 40.56 (3.31) |
| TD | 30.06 (2.66) | 28.83 (1.99) | 32.67 (5.19) | 30.22 (3.76) | 35.04 (4.35) | 29.38 (3.12) |
P = production, C = comprehension
