Production vs perception of function morphemes

Telegraphic Speech

Dropping grammatical pieces (function words) while maintaining content words (we go store? )

Why do children omit parts of speech

Function words ave probably dropped because there is a limit to what children can get out

Shi et al 2006 when do babies recognize specific function words?

By 13 months they recognize what frequent function words should sound like and choose to listen to real function words for longer than fake ones

Santlemann & jusczyk 1998 found

18 mo listened to grammatically correct stories longer suggesting they understand the relationship between - ing and it's helper verb

Gerken & McIntosh 1993

23-28 mo were most accurate @identifying the object when sentence used correct morpheme suggesting they understand the proper way it should be

Van Heugten & shi 2009 found

French 25 mo used determiners to predict what object is talked about

Ferry et al. 2020 found

12-24 mo know meaning of function morphemes since hey could tell apart which picture is talking about 1 vs multiple children

Even tho children don't produce function morphemes reliably, they have knowledge about hem

What Dey sound like @13 mo, now hey are related @18mo, and that it affects comprehension @23mo maybe even 12 mo

When do they produce function morphemes

Depends on the importance of them in their language order affixed by properties of language

Turkish children

Produce bound morphemes before they combine words

Roger brown found

Different morphemes appear @different times and that there is agap between when it first appears and its consistent -reliable use in obligatory contexts

Mean length of utterance (MLU)

Standard measure where amount of morphemes produced is apredictor of their grammatical stage