RETRIEVAL BLOCK
Lack of capacity to recover a particular piece of information for a short time, along with the sensation of an…
RETROSPECTIVE FALSIFICATION
Deliberately or unconsciously making changes to a story each time it is repeated to exaggerate good points or increase interest…
REVERSE TOLERANCE
Generally in psychoactive drugs (especially central nervous system stimulants), the tendency of increased sensitivity in the body wherein repeated doses…
REY AUDITORY VERBAL LEARNING TEST (RAVLT)
Evaluative instrument for verbal learning and memory, along with inhibition, retroactive inhibition, encoding versus retrieval, organization, and retention.
RHYMING DELIRIUM
Uncontrollable verbal responses in rhyme, sometimes observed during a manic episode.
RIGHT HEMISPHERE
Part of the brain to the right of the longitudinal fissure and connected to the left hemisphere by the corpus…
RING CHROMOSOME 18
Rare condition wherein one or both ends of chromosome 18 have been displaced, and the ends are joined in a…
RISKY PREDICTION
Conjecture formulated using the foundation of a scientific hypothesis which has a strong chance of proving the hypothesis to be…
ROLE AMBIGUITY
Type of role strain which occurs when shared specifications set for an expected role are incomplete to tell the involved…
ROLE-ENACTMENT THEORY
Interpersonal psychiatric description of hypnosis wherein the individual under hypnosis carries out a role designated by the hypnotist and then…
ROSTAN TYPES
Classification of body types using facets of the inner makeup of the body. See also: cerebral type, digestive type, muscular…
ROUND WINDOW
Opening in the inner wall of the middle ear which is covered by a thin membrane that compensates for changes…
RULE OF THUMB
Basic principle with extensive practical application which is not meant to be exactly precise or useful for every single circumstance.…
RADIAL GLIAL CELLS
Early in development, the radial glial cells are located in the neuroglia and span the width of the emerging cerebral…
RADIOGRAPH
An image formed on a photo-sensitive surface by radiation. An x-ray is a radiograph. Radiographs are produced through a process…
RANDOM-RATIO SCHEDULE (RR SCHEDULE)
Where reinforcements are scheduled randomly as determined by the number of responses needed for reinforcement. The number of responses varies…
RAPID CYCLING
Rapid cycling describes mood disturbances that fluctuate over a short time span. The cycling most commonly occurs between manic and…
RATING SCALE JUDGMENT TASK
A task where participants are asked to assign a confidence rating to their "yes" or "no" answers.