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RABBIT-DUCK FIGURE

An animal figure, that depending on perspective, could either look like a duck or a rabbit. The figure appears as

RADIATION NECROSIS

The tissue death that results from exposure to damaging levels of radiation

RAGE DISORDER

A condition characterized by episodes of uncontrolled rage. The clinical disorder features episodes of rage as the primary symptom.

RANDOM VARIABLE

Using chance to assign value to a variable.

RAPPROCHEMENT

A state of cordial relations between individuals or groups. 2. In the theory put forth by Austrian child psychoanalyst Margaret

RATIO SCALE

A measurement scale where zero is a true absence of the measured attribute and a constant ratio of values is

RATIONALIZATION

An explanation in which apparently logical reasons are given to justify unacceptable behavior. In psychoanalytical theory, such an outlook is

REACTION TIME (RT)

The time that passes between the introduction of a stimulus and the reaction by the subject to that stimulus.

READERSHIP-SURVEY TECHNIQUE

A technique to determine to what extent a subject has absorbed the content of the copy in an advertisement. The

REAFFERENCE PRINCIPLE

Conceptually, the explanation of the regulation and interaction of internal signals and sensory signals to direct and coordinate body movements.

REALITY THERAPY

Therapeutic treatment addressing the client's present maladaptive behavior and aiming to develop the client's ability to cope with a stressful

REBOUND INSOMNIA

A phenomena associated with the cessation of use of hypnotic agents in the treatment of insomnia. The phenomena or condition

RECEPTIVE LANGUAGE

The language received and processed by a person as opposed to her expressive language or the language she originates.

RECIPROCAL LIKING

A label for the attraction and cordiality that people have for others who are attracted to them.

RECOMBINANT DNA

A DNA molecule possessing a segment which has been introduced by genetic recombination or other comparable method. Recombinant DNA laboratory

RECREATION

Enjoyable, relaxing, or distracting hobbies, activities, or pastimes.

RED SAGE

Also known as Chinese sage, a perennial shrub in the genus Salvia. Native to both China and Japan, the roots

REDUPLICATIVE PARAMNESIA

Belief that a location has been duplicated, either existing in two or more locations at the same time, or that

REFERRED SENSATION

Sensitivity perceived at a disparate point from the affected area. Also known as: eccentric perception.