Stuttering

===Audible disfluencies===
Common stuttering behaviors are observable signs of speech disfluencies, for example: repeating sounds, syllables, words or phrases, silent blocks and prolongation of sounds.   
*Repeated movements
** Syllable repetition—a single syllable word is repeated (for example: on—on—on a chair) or a part of a word which is still a full syllable such as "un—un—under the&nbsp;..." and "o—o—open".
** Incomplete syllable repetition—an incomplete syllable is repeated, such as a consonant without a vowel, for example, "c—c—c—cold".
** Multi-syllable repetition—more than one syllable such as a whole word, or more than one word is repeated, such as "I know—I know—I know a lot of information."
* Prolongations
** With audible airflow—prolongation of a sound occurs such as "mmmmmmmmmom".
** Without audible airflow—such as a block of speech or a tense pause where no airflow occurs and no phonation occurs.