Journal of Speech, Language, and Hearing Research
Evaluating the Validity of Visual Analog Scales for Measuring Intelligibility in Spontaneous Speech
Purpose: The purpose of this study was to investigate the relationship between orthographic transcription and visual analog scale (VAS) intelligibility ratings across read and spontaneous speech in speakers with Parkinson's disease (PD), speakers with multiple sclerosis (MS), and healthy controls. Method: Forty-four speakers (20 PD, 20 MS, four healthy controls) provided read speech samples from the Speech Intelligibility Test and spontaneous monologue samples. Speech samples were mixed with multitalker babble and …