syntactic measures for a growth curve analysis

[Brian MacWhinney]

Dear Yuriko,
     This is a recurring question for child language researchers.  The idea of calculating
MLU based on the exclusion of all one-morpheme utterances is a nice one.  In theory, I would have
thought that I could get KWAL to search for all utterances that contained a space using a switch such
as +s"* *"  and then send that all to a new file or to MLU, but this doesn't work.  Maybe Leonid knows how to 
get this to work.
  Another (probably more useful) approach is to use DSS to measure later syntactic growth.

-- Brian

On Feb 15, 2012, at 4:39 PM, Yuriko Oshima-Takane wrote:

> Hi  Brian and colleagues,
>  
> We would like to do a growth curve analysis on some syntactic measures
> using the functional data analysis. MLU is not a good syntactic measure
> for this analysis because it sometimes goes down like 1.56 -> 2.20 ->1.60 ->2.15.
> We are wondering if MLUs excluding one morpheme utterances could be
> used for this analysis.  But we are not sure how to exclude all the one
> morpheme utterances from the transcripts and calculate MLUs.  Could you
> please let us know how to do that? Also if you know any other syntactic
> measure which would be good for a growth curve analysis, please let us know.
> Thanks.
>  
> Yuriko
>  
> 
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