The aim of this study is to examine the fluent speech of people who stutter and adults with developmental apraxia of speech comparing them with individuals with normally developing speech. In a corpus of recorded sentences, an acoustic study proceeded in order to examine their temporal aspects of production. The duration of vocalic and consonantal segments, the syllables and trissylablic word as well as the articulatory rate and the average proportion of vocalic intervals (%V) constitutes indices of how the different individuals organize their verbal production