R

n23

RETINAL GANGLION CELLS

Neurons in the retina which are responsible for sending visual stimulation signals to the brain.

RETRIEVAL FAILURE

Incapacity to recall knowledge which is acknowledged to be present within the memory.

RETROSPECTIVE RESEARCH

Mental study which intends to analyze the present in premise to the past. Compare with: prospective research.

REVERSIBILITY

Possibly being expressed in terms of negation or compensation, a mental process which allows the reversal of a chain of

RH FACTOR (RHESUS FACTOR)

Any of at least eight antigens which have been genetically determined and may be affixed to the outer layer of

RHYTHM METHOD

Approach to contraception wherein the woman monitors her menstrual cycle and abstains from intercourse during her most fertile period. See

RIGHT TO EFFECTIVE TREATMENT

Procedural standing or moral position that individuals with a handicap or malady possess the legal, social, or ethical entitlement to

RING-FINGER DERMATITIS

Possibly the result of detergent or irritation due to chemicals in a ring, or a psychosomatic disorder, a condition distinguished

RISPERIDONE

Second-generation, atypical antipsychotic, employed in the treatment of schizophrenia, schizoaffective disorder, mixed and manic states characterizing bipolar disorder, and irritability

ROBUSTNESS

Potential of a hypothesis-testing or approximation technique to generate legitimate measurements, despite transgressions against the presuppositions upon which the strategy

ROLE CONFUSION

Doubt regarding a particular social or group task. Gender role behavior patterns typically correlated with the opposite gender. See also:

ROLFING

Holistic system of body manipulation using deep massage to realign the balance of the body's muscles; relieving chronic pain and

ROSTRAL

Having to do with the rostrum or related structures.

ROUTE LEARNING

Finding out how to negotiate a course in a spatial environment by means of obtaining precise instructions, distances, and landmarks.

RULE-BASED SYSTEM

Computer software wherein human practical knowledge is accumulated and employed as a series of "if-then" associations. See also: expert system;