Grammatical Constructions
CPD for Primary: Children's Language Development (by Tom Hollins), topic 1.1.6
Acquisition of Grammatical Constructions
Inflectional morphemes and other grammatical features (and grammatical words) are acquired in a specific order. Brown’s research proposes that they are learned in this order:

1-6
- Present progressive (-ing) – I am walking.
- Prepositions – by, on, at...
- Simple plural (-s, -es) – he walks.
- Possessive (- ‘s) – Trudi’s boat.
- Uncontracted copula – Stuart is acting.
- Articles – the box, a dog.

7-12
- Regular past tense (-ed) – I walked.
- Third person regular verbs (-s) – Dave types.
- Third person irregular verbs – Suz teaches.
- Auxiliary verb ‘be’ – I am, he was, you are.
- Contracted copula – Stuart’s acting.
- Contracted auxiliary verb ‘be’ – I’m, you’re.

Katamba
- Katamba argues that this order is the same regardless of parental input.
Test yourself on Grammatical Constructions
Order of Acquisition of Grammatical Constructions: Brown (1-6)
Order of Acquisition of Grammatical Constructions: Brown (7-12)
Which researcher proposed the order that grammatical constructions are learned in?