Fig. 1.

Performance of PwPD and Control Speakers for the parameters included in the discriminant analysis for reading aloud (a) and spontaneous speech (b). Please note that values for articulation rate have been upscaled in order to fit the figure. Values should be divided by 10 in order to arrive at the proper value, i.e. a rate indicated as 50 on the figure constitutes an actual rate of 5 syll/s. The data presents the median, first and third quartiles, as well as outliers (defined as points whose value lies outside 1.5 times the interquartile range).