VAS rating scales (EN)

Visual Analogue rating Scales for IINFVo and GRBAS.

(I)INFV0 and GRBAS are standards for rating voices used in Speech Therapy. TEVA will primarily be used to study voicing in sustained vowels. In these circumstances, the standard Impression, Intelligibility, and Fluency scales of (I)INFVo would be of little use. Therefore, the TEVA Rating screen also includes derived sets of the scales.

Visual Analogue Scale (VAS) rating

In VAS rating, the judges have to indicate the severety of some condition as a mark on a line. Each parameter has to be scored on a Visual Analogue Scale (VAS) that takes the form of an undivided horizontal bar, where a position has to be marked. The extreme right concurs with a very good score for this parameter. In (I)INFVo Impression rating this is a substitute voice Most like a normal voice. The extreme left concurs with a very bad score for this parameter, that is, Least like a normal voice. The words Least and Most are printed at the end of the bars. The other scales have equivalent words printed at the end of the bar.

When a parameter has not yet been marked, a vertical gray line will appear in the center of the scale. When a parameter has been marked, a vertical red line will appear on that position.

(I)INFVo scales

Vowel Scales (derived from (I)INFVo and GRBAS scales)

GRBAS scales

Standard GRBAS rating scales

Consensus ratings

Sometimes it is necessary to combine ratings from two or more raters into a single consensus rating. This can be achieved by combining the tables written for all the raters. Concatenate the numbers for each rater with ; (a semicolon-";" character) into a single tab-delimited column. The ratings will be displayed with blue markers. Clicking in the customary way on the VAScale will generate the single consensus rating in Red.


M. B. J. Moerman, J. P. Martens, M. J. Van der Borgt, M. Peleman, M. Gillis, P. H. Dejonckere (2006). 'Perceptual evaluation of substitution voices: development and evaluation of the (I)INFVo rating scale', Eur Arch Otorhinolaryngol, 263: 183-87.

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© R.J.J.H. van Son, August 10, 2012