in need of normative information re: intelligibility

[Caroline Bowen]

Dear Kim,

This is the reference:

Gard, A., Gilman, L., & Gorman, J. (1993). Speech and Language Development
Chart – 2nd Edition, Austin, Tx: Pro-Ed.

I use this: http://members.tripod.com/Caroline_Bowen/Table1.htm
B.L., Lynch, J.I., and Fox, D.R. (1980). A Parent - Child Cleft Palate
Curriculum: Developing Speech and Language. CC Publications, Oregon.  From
the Table on page 102 entitled How well words can be understood.

Peter Flipsen Jr suggests (after Coplan & Gleason, 1998):

Age in years divided by 4 = % understood by strangers. Thus:

age 1 year = 1/4 or 25%
age 2 years = 2/4 or 50%
age 3 years = 3/4 or 75%
age 4 years =4/4 or 100%

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

The Coplan & Gleason (1998) study, that Carol Stoel-Gammon suggested, is
described here:
http://health.groups.yahoo.com/group/phonologicaltherapy/message/2597

These may help:

Schiavetti, N. (1992). Scaling procedures for the measurement of speech
intelligibility. In Kent, R. D. (Ed.), Intelligibility in speech
disorders.(pp. 11-34). Philadelphia, PA: John Benjamins.

Here is some interesting work in Sheffield about intelligibility as a
clinical outcome measure for children with speech difficulties.
http://www.shef.ac.uk/hcs/staff/wells

Ust a thought - I think we always need to ask "Intelligible to whom?" and
look at single word and conversational speech intelligibility.

Caroline

Caroline Bowen PhD
Speech Language Pathologist
9 Hillcrest Road
Wentworth Falls NSW 2782
Australia
e: cbowen at ihug.com.au
i: http://www.slpsite.com
t: 61 2 4757 1136


-----Original Message-----
From: info-childes at mail.talkbank.org
[mailto:info-childes at mail.talkbank.org]On Behalf Of Kim Ventimiglia
Sent: Saturday, 17 September 2005 1:01 AM
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