A study of disfluencies in people who do not stutter estimated using the Assessment of Stuttering

ccurately evaluating stuttering symptoms in both children and adults who stutter is the first step in the treatment of stuttering. Around the time of "Diagnosogenic theory" researchers collected speech samples from a large number of children, and attempted the categorization and development of indicators for evaluating people who stutter (PWS). Two global disfluency measures were introduced: Stuttering-like disfluencies (SLD) and Other disfluencies (OD). SLD, unique to PWS, included 4 types: partial word repetition, monosyllabic word repetition, prolongation of sound, and arrest of speech (blocks). To distinguish PWS from people who do not stutter (PWNS), one of the benchmarks commonly used is "3 stutters per 100 words or 100 syllables." Similarly, the Stuttering Severity Index (SSI) was developed to measure the effect of the treatment of stuttering in 1972. It has been continually modified, and the SSI-3, developed in 1994, has been used in many countries, including the United States, as a compulsory Original Contribution Kitasato Med J 2015; 45: 138-145