VIDBE-Q Volume 65 Issue 2
50
unreliable at that level, the student would be less likely to use speech as his or her
primary mode of expressive communication.
Figure 1
Tactile Threshold Model
Note. Image is of an intersecting set of an x-axis labelled, "Hearing Loss Level,"
and a y-axis labelled, "Vision Loss Level," with the intersection labelled 2.5 and
creating four quadrants. The end points for each axis are 1 and 5. Clockwise from
the top left corner the quadrants are labelled, "Auditory/ Tactile," "Tactile"
(highlighted in yellow) and "Significant Dual Sensory Loss," "Visual/ Tactile,"
and "Auditory."
