Appendix B.
Participant-Specific Shaping Constraints on Language Production
| Target | P1 | P2 | P3 | P4 |
|---|---|---|---|---|
| Baseline target structure | Present progressive SVO | Present progressive SVO | Present progressive SVO | Appropriate verba |
| Target 2 | Past progressive SVO | Present progressive (PN + V) | Present progressive SVO | Present progressive SVO |
| Target 3 | Present progressive + NP and PP | Present progressive SVO + PP | Present progressive SVO | |
| Target 4 | SVOs linked with conjunction | |||
| Target 5 | Regular past tense SVO |
Note. Targets were added as a participant reached criterion. S = subject; V = verb; O = object; PN = pronoun; NP = noun phrase; PP = prepositional phrase.
a
Initially, P4 had difficulty producing subjects and verbs and was directed to focus on the verb.