The Pupil Is the

question 61

Multiple Choice

The pupil is the

• A) adjustable opening in the center of the eye through which light enters.
• B) transparent structure that focuses light rays in a process called accommodation.
• C) light-sensitive inner surface of the eye,containing both rods and cones.
• D) central focal point in the retina,around which the eye's cones cluster.

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Definitions:

Learned Response

A behavior that has been acquired or modified as a result of experience or conditioning.

Extinction

In psychology, the gradual weakening and disappearance of a conditioned response tendency; in biology, the dying out of a species.

Commission

An instruction, command, or duty given to a person or group of people.

Fixed-ratio Schedule

This is a schedule of reinforcement where a response is rewarded only after a specified number of responses.