R

n23

RESPONSE HIERARCHY

Arrangement of responses in the order in which they are anticipated to be elicited by a particular stimulus, or deemed

RESPONSE-ORIENTED SYSTEM

Psychological philosophy which highlights responses as the main objective of primary study. See also: act psychology; S-R psychology.

RESTRICTED AFFECT

Subdued spectrum or force of emotional expression. See also: flat affect.

RETINA

Light sensitive layer of the eye, consisting of four major layers including the outer neural layer which contains nerve cells

RETINOPATHY OF PREMATURITY (ROP)

Affecting premature infants, a disorder of the retina which may cause total retinal detachment and blindness.

RETROLENTAL FIBROPLASIA

Occurring primarily in premature infants, disorder involving the tissues located behind the eye's lens, distinguished by the existence of a

REVERSAL OF AFFECT

Modification of a harmful impulse into its opposite.

REVOLVING-DOOR PHENOMENON

Patient being readmitted to institutions or facilities, usually due to discharge prior to adequate recovery.

RHINO- (RHIN-)

Prefix meaning nose or sense of smell.

RIDGE REGRESSION

Most commonly used method of regularization of ill-posed problems.

RIGHTS OF PEOPLE WITH MENTAL RETARDATION

Rights embodied in the United Nations Standard Rules on the Equalization of Opportunities for Persons with Disabilities which state that

RISK TAKING

Behavioral standard of participating in very dangerous or hazardous activities, often correlated with drug addiction, gambling, and unsafe sexual practices.

ROBAXIN

Muscle relaxant for skeletal muscles, used to treat spasms; trade name for methocarbamol.

ROENTGENOGRAM

Photographs obtained with the use of x-rays. See also: radiograph.

ROLE SET

Assortment of individuals and their corresponding roles which associate and interrelate deliberately with the holder of a specific role, defining

ROOT-MEAN-SQUARE (RMS)

Square root of the average of the squares of a set of numbers or quantities. For example: the root mean

ROTE REHEARSAL

Saying material repeatedly to oneself as a method of committing it to mind, especially with regard to a telephone number,

RUBROSPINAL TRACT

Primary path for the mediation of voluntary motion. Accountable for large muscle motion including the arms and the legs as

RUNNER'S HIGH

Feeling of euphoria encountered by a number of cross-country running enthusiasts and joggers as they approach the conclusion of a

RACIAL AND ETHNIC DIFFERENCES

The supposed differences between one or more ethnic or racial groups. There is no empirical evidence of innate differences between