Perkins W H, Bell J, Johnson L, Stocks J
J Speech Hear Res. 1979 Dec;22(4):747-55. doi: 10.1044/jshr.2204.747.
Effects on syllable disfluency and phone rate (duration of phones spoken per minute) were compared in 19 adult stutterers under three reading rate conditions: control; slow normally-spoken-word-syllable timed (WS); and phone-prolongation (PP) matched to WS in syllable rate. Both phone rate and syllable disfluency were progressively reduced from control to WS to PP conditions. These results strongly support the discoordination hypothesis that any condition which facilitates initiation of phonation in coordination with articulation and respiration will reduce stuttering. A broader hypothesis is that effective planning time for voice onset coordinations is the common element that explains the power of retarded phone rate, reduction of phonatory complexity, and rhythm virtually to eliminate stuttering.
在三种阅读速度条件下，对19名成年口吃者的音节不流畅性和音素率（每分钟说出的音素持续时间）进行了比较：对照；缓慢的正常语速单词音节计时（WS）；以及在音节率上与WS匹配的音素延长（PP）。从对照条件到WS条件再到PP条件，音素率和音节不流畅性都逐渐降低。这些结果有力地支持了失调假说，即任何促进发声与发音和呼吸协调启动的条件都会减少口吃。一个更广泛的假说是，语音起始协调的有效计划时间是解释减慢音素率、降低发声复杂性以及节奏实际上消除口吃能力的共同因素。
