Suppose a blind person and a sighted person participate in a mental-rotation experiment. each participant is presented with an object at a fixed orientation and asked whether it can be rotated to match a second, target object. (the blind person is given the objects to feel, whereas the sighted person sees a picture of the objects.) which prediction would you make about the performance of the two participants?

Both participants will show a linear relationship between degree of rotation and reaction time.

Explanation:

When in an experiment a sighted person and a blind person is given a mental task to match an object with the orientation of a second object by rotating the first object. To this both the participants shows a linear relation between the  reaction time and the degree of rotation. The experiment which was performed by both the persons involves a spatial representation for the blind person and a visual representation for the sighted person.

answer; face validity;

answer; necessity-driven;