| A | B |
| Instrumental | I want |
| Regulatory | Do as I tell you |
| Interactional | Me and you |
| Personal | Here I come |
| Heuristic | Tell me why |
| Imaginative | Let's pretend |
| Informative | I've got something to tell you |
| Random | Cooing, gurgling, babbling |
| Unitary | Holophrastic speech |
| Expansion and Delimiting | Children move to more adult speech-- some still use pivot words |
| Structural Awareness | Irregular verbs are regularized: "I go" made past tense to "I goed" |
| Automatic | Internalized grammar, but can't always explain why |
| Creative | Children invent their own language |
| Motor development and language acquisition | Usually directly related |
| 18 to 24 months | 272 words |
| up to 18 months | 22 words |
| by six years of age | over 2500 words |
| Creativity | imagination plus knowledge plus evaluation |
| preparation, incubation | illumination, verification |
| Creativity doesn't... | just happen |