IPSyn question

[Fay Wouk]

Could someone with experience using Scarbourough's Index of  
Productive Syntax answer a question for me?

The V6 level is Auxiliary be, do have  in VP. Would utterances which  
have contracted is ('s) as their verb be acceptable here? I note that  
they can only be second exemplars for V4, so I'm wondering if they  
can also only be second exemplars for V6. Further, would it make any  
difference if the child had already been credited with 2 points at  
V4, for having produced 's as a second exemplar, and 'm as first  
exemplar?

thanks,
Fay

Dr. Fay Wouk
Senior Lecturer in Linguistics
Dept. of Applied Language Studies and Linguistics
University of Auckland