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REPEATED ACQUISITION

Procedure in which the first stages of learning are repeated while the sequence changes from one test period to the

REPRESENTATIONAL INSIGHT

The understanding that one object can be used as a stand-in for another.

REPRODUCTION

Biologically, production of new individuals from parental entities in perpetuation of the species. May be sexual or asexual in nature.

RESEARCH ETHICS

Application of fundamental, ethical precepts for a variety of topics. Also known as: experimental ethics.

RESIDUAL VISION

Visual process which is generally nonconscious, usually spared when conscious vision is lost due to primary visual (striate) cortex damage.

RESOURCE THEORY

Theory of interpersonal relations which posits that the amount of resources held by each participant will affect the nature of

RESPONSE COST

Conditioning process in which specific responses result in punishment, usually the loss of valued resources. See also: negative punishment.

RESPONSE VARIABLE

In research, a variable which is dependent on other variables.

RESTORATIVE JUSTICE

Method of application for criminal justice where the focus is on rehabilitating offenders and making reparation to victims.

RETICULAR MEMBRANE

A net-like membrane covering the spiral organ of the ear; the free ends of the outer hair cells pass through

RETINEX

Theory proposed to explain color perception, brightness perception, and constancies, theorizing that the color of an object is not decided

RETROGRADE TRANSPORT

Travel along a neural axon of specific substances toward the body of the cell. See also: axonal transport.

REVERSAL ERROR

Characteristic of dyslexia when inappropriate to level of development, error wherein a letter or word is written in an inverted

REVIVIFICATION

Method of hypnosis wherein suggestion is employed to coax an individual to revive buried or suppressed memories.

RHINAL FISSURE

In the brain, a cleft present on the anterior medial surface of each temporal lobe. Also known as: rhinal sulcus.

RICKETS

Childhood condition caused by severe vitamin D deficiency.

RIGHT-LEFT ORIENTATION TEST

Any evaluative measure which discerns the aptitude to effectively differentiate right and left directions.

RISK PERCEPTION

Risk as it is assessed through individual judgment as correlated with specific dangers. Past experiences, age, gender, and culture all

RIVASTIGMINE

Marketed under the trade name Exelon, a parasympathomimetic or cholinergic agent in treatment of mild to moderate Alzheimer's-type dementia and

RODS OF CORTI

A dual row of inflexible tower-like arrangements which make up an arch in the tunnel of Corti within the cochlea.