The Latest Version of the Classification System Used by Psychologists

question 10

Multiple Choice

The latest version of the classification system used by psychologists is _______.

• A)DSM II
• B)DSM III
• C)DSM-IV-TR
• D)DSM IV-R

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Definitions:

Photoreceptor

Sensory receptor that is sensitive to light—for example, rods and cones of the retina.

Lens Flattens

A process where the lens of the eye changes shape, becoming less curved, to focus distant objects clearly onto the retina.

Ciliary Muscles

Ring-shaped muscles located in the eye that control the shape of the lens to focus on objects at varying distances.

Pupil Diameter

The size of the opening in the center of the iris of the eye, which varies to regulate the amount of light reaching the retina.