A Quantitative Investigation of Judgments Concerning Some Variables of Stuttering Phenomena in Children

Date of Award


Degree Type


Degree Name

Doctor of Philosophy (PhD)


Communication Sciences and Disorders


Louis M. Di Carlo

Second Advisor

George G. Thompson

Third Advisor

Charles V. Mange


Stuttering behavior, Communication disability, Psychological problem

Subject Categories

Communication Sciences and Disorders


This study purports to investigate:

1) agreement on loci of stuttering by speech clinicians, teachers, stutterers, peers, parents of stutterers, and parents of non-stutterers employing an extensional definition of stuttering;

2) agreement on diagnosing type of stuttering -- clonic, tonic, or mixed;

3) agreement between an outside criterion -- unanimous agreement among three speech pathologists with extensive experience with stuttering phenomena -- and the judges on: a. loci of stuttering b. type of stuttering;

4) agreement on rated severity of stuttering;

5) agreement on ranking subjects according to: a. frequency of stuttering indicated, b. degree of agreement obtained by judges, c. degree of agreement obtained by judges with criterion;

6) relationship between frequency and rated severity of stuttering;

7) differences in the judged frequency of stuttering from audio-visual and auditory cues when employing the same materials and same judges.


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