Can we devise a new measure of syntactic complexity for language acquisition? Duna ú jv á ros, March 18, 2004 Marijan Palmović Laboratory for Psycholinguistic Research University of Zagreb Marijan.Palmovic@public.srce.hr http://public.srce.hr/labpolin/.
Can we devise a new measure of syntactic complexity for language acquisition?
Dunaújváros, March 18, 2004
Laboratory for Psycholinguistic Research
University of Zagreb
- Does not discriminate between children of various developmental rate?
Vjeran language acquisition?
Croatian corpus (CHILDES): MLU in morphemes
Vjeran language acquisition?
Croatian corpus (CHILDES): MLU in words
Various measures for assessing lexical development 1 language acquisition?
Type/token ratio (TTR)
Various measures for assessing lexical development 2 language acquisition?
NDW – Number of Different Words
Fixing the number of tokens, not utterances
VOCD: a smarter TTR
- Accounts for the file size
-- takes randomly chosen samples of text
RRG language acquisition?
The overall organization of the RRG (Van Valin, LaPolla) language acquisition?
-causative state, causative achievement…
The ice melted. Hot water melted the ice.
Verb class Logical structure language acquisition?
State predicate’ (x) or (x,y)
Activity do’ (x, [predicate’ (x) or (x,y)])
Achievement INGR predicate’ (x) or (x,y)
Accomplishment BECOME predicate’ (x) or (x,y)
Lexical representation for the basic Aktionsart classes:
(Van Valin, LaPolla, 1997)
John ate the fish. do’ (John, [eat’ (John, fish)])
Macroroles actor undergoer
SENTENCE language acquisition?
NP V NP
John ate the fish yesterday
do’ (John, [eat’ (John, fish)])
Antonija language acquisition?
Table representing the number of different verb classes
- the first step
Antonija, 1;9: language acquisition?
*ANT: Ja idem tebi.
%Eng: I am going to you.
*ANT: Ja ću ovo držati.
%Eng: I will hold this.
*ANT: Neću tebi dati olovku.
%Eng: I will not give you the pencil.
Complex sentences as represented in RRG language acquisition?
nuclear clausal language acquisition?
Interclausal Relations Hierarchy - IRH
CL COO language acquisition?
Attach points to different juncture and nexus types…
…to modify the scale obtained from points given for logical form variety
An example: language acquisition?
Strongest connection: nuclear cosubordination
John pushed open the door.
Vince wiped the table clean.
-should be acquired first!
But in Croatian, these sentences are translated differently: language acquisition?
John je gurnuo vrata i otvorio ih.
Vinko je očistio stol.
verb + verb in infinitive language acquisition?
in the purposive construction
Antonija, 1;7: two word sentences, e.g.Hocem ovo. ‘Want this.’ 5+0
Antonija, 1;9 core cosubordination:Idemo pjevati! ‘Let’s sing!’ 4+5
Antonija, 1;10: clausal coordination:
Nis-am pjev-a-la, nego ja s-am pak-a-la.
Be_not-1SG:PRES sing-5-PART:F but I be-1SG:PRES cry-5-PART:F
'I was not singing, but I was crying.'
Comparison with the MLU language acquisition?
Antonija, 1;7: two word sentences – 5:
MLU (words) = 1,57
MLU (morphemes) = 2,29
Antonija, 1;9 core cosubordination – 9:
MLU (words) = 2,43
MLU (morphemes) = 3,53
Antonija, 1;10: clausal coordination – 13:
MLU (words) = 2,19
MLU (morphemes) = 3,43
Problems: language acquisition?