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<!--StartFragment-->
<p class="MsoNormal">Hello again, </p>
<p class="MsoNormal">I am using the CHIP utility for a research project. I am
interested in looking at how much mothers imitate and expand upon child
utterances and whether that facilitates language development.</p>
<p class="MsoNormal">I have a few questions about some of the summary measures
included in CHIP. I plan to use %_Overlap and %_EXPAN in my analysis, but I am
not sure I understand Avg_Dist, Rep_Index, and %_IMITAT. These are the descriptions
included in the manual:</p>
<p class="MsoNormal">“$DIST: the distance the response utterance is from the
source”</p>
<p class="MsoNormal">“Avg_Dist: The sum of the DIST values divided by the total
number of overlapping utterances.” </p>
<p class="MsoNormal">“Rep_Index: Average proportion of repetition between the source
and response utterance across all the overlapping responses in the data.” </p>
<p class="MsoNormal">“%_IMITAT: ?? The numerator is the number of imitations and
the denominator is ???”<o:p></o:p></p>
<p class="MsoNormal"><o:p>My questions are: </o:p></p><p class="MsoNormal"></p><ol><li><span style="line-height: 18px;">How is distance measured? Is this how many utterances there
are between source and response?</span></li><li><span style="line-height: 18px;">Is the Rep_Index how closely the source and response match
(e.g. 3 out of 4 words match)?</span></li><li><span style="line-height: 18px;">Does %_IMITAT measure percent of responses that exactly
imitate the source? What is the denominator?</span></li></ol><p></p>
<p class="MsoNormal">Any further explanation you could provide on these measures would be very helpful. Thank you again for all of your help and for this wonderful
program!</p>Jenna K. Poland<div>M.A Speech-Language Pathology Candidate, May 2015<br>Graduate Assistant to Nan B. Ratner, Ed.D <br>University of Maryland, College Park
<!--EndFragment--></div></div>
<p></p>
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