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Validity:
The extent to which a test measures what it is supposed to.
Variable Interval Schedule:
A schedule of reinforcement that reinforces a response after an unpredictable number of responses.
Variable Ratio Schedule:
A schedule of reinforcement that reinforces a response after an unpredictable number of responses.
Vestibular Sense
The sense of balance and body movement and position.
Visual Capture:
The tendency for vision to dominate the other senses.
Visual Cliff:
A laboratory devise made for testing the depth perception of infants and animals.
Visual Encoding:
The encoding of visual images.