in need of normative information re: intelligibility

[Carol Stoel-Gammon]

One reference I have used is:

Coplan, J. & Gleason, J. (1988). Unclear speech: recognition and
significance of unintelligible speech in preschool children. Pediatrics, 82,
447-452.

The authors state that intelligibility (to a stranger) is 50% at age 2
years, 75% at age 3:0 and 100% at age 4;0. I'm sure there is great variation
across children and situations,  but these numbers may be fairly good.

 Carol Stoel-Gammon

*****************************************************************
Carol Stoel-Gammon, Ph.D.
Professor, Department of Speech and Hearing Sciences
University of Washington
*****************************************************************


From: "Kim Ventimiglia" <annkiddy at hotmail.com>
Date: Fri, 16 Sep 2005 11:01:26 -0400
To: info-childes at mail.talkbank.org
Subject: in need of normative information re: intelligibility


Dear colleagues,

I am in need of normative information concerning the percentage of
utterances that are intelligible in 2, 2.5, and 3 year-old
typically-developing children.  I have seen a citation for Gard, Gilman, and
Gorman but do not have the year or any other publication information.  does
anyone have this information?

Wth thanks,


Kim M. DesBarres, MS, CCC-SLP
Clinical Supervisor
Donald R. Reed Speech & Hearing Center
Phleps Memorial Hospital






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