Gallena (2007), suggested using the following tasks for assessing adductor spasmodic dysphonia: 1) “sustained vowel /a/”, 2)”glottal diadochokinesis”, 3) connected speech both in sentences and conversation, 4) read “Towne-Heuer Passage”, and 5) laughing and singing. These tasks will examine voice breaks, aperiodic segments, the length of time needed to read sentences or passage, frequency shifts and presence or absence of tremors. Voice Handicap Index. In addition, the clinician will want to know the individuals perception of their voice. The Voice Handicap Index (VHI) scale strives to assess the level of impact that is caused by the voice problem. The individual self-rates their voice disorder from mild to severe. This scale has 30 items