“…During whispered speech, contrary to ordinary voiced speech, vocal fold vibration is minimal or even completely absent (Monoson & Zemlin, 1984). As initiation and (and termination) of voiced speech segments is often a core problem in stuttering (Chang & Guenther, 2020;Cullinan & Springer, 1980;Kikuchi et al, 2018), whispering can temporarily but often drastically reduce stuttering symptoms (Bruce & Adams, 1978;Bloodstein, 1950;Johnson & Rosen, 1937;Perkins et al, 1976;Rami et al, 2005). Experimental studies have shown 60-80% dysfluency reduction when using whispered speech relative to normal speech (Ingham et al, 2009;Ingham et al, 2012).…”