retardation


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retardation:

see mental retardationmental retardation,
below average level of intellectual functioning, usually defined by an IQ of below 70 to 75, combined with limitations in the skills necessary for daily living.
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retardation

(ree-tar-day -shŏn) The difference in the Moon's rising time between successive nights.

Retardation

 

in biology, the late formation and delayed development of an organ in offspring as compared with ancestors. Retardation depends on the beginning of the functioning of an organ and consequently on the environmental conditions in which the development of the individual organism (ontogeny) occurs.


Retardation

 

(1) In linguistics, a variation of the phenomenon of phonetic analogy consisting of a change in the form of a word (lexeme) under the influence of the phonetic form of another lexeme that precedes it in context. Retardation is characteristic of numbers, for example, Tadzhik shonzdakh (“sixteen”), instead of the expected shazdakh, by analogy with ponzdakh (“fifteen”). The same phenomenon operating in the reverse direction is known as anticipation, for example, Russian deviat’ (“nine”), instead of neviat’, under the influence of desiat’ (“ten”).

(2) In poetics, a compositional technique of holding back the development of the plot; it is accomplished by such means as lyric digressions, descriptions of landscapes or interiors, and the repetition of episodes of the same type.

retardation

[‚rē‚tär′dā·shən]
(medicine)
Slow mental or physical functioning.
(navigation)
The amount of delay in time or phase angle introduced by the resistivity of the surface over which the radio wave in radio navigation is passing.
(oceanography)
The amount of time by which corresponding tidal phases grow later day by day, averaging approximately 50 minutes.
(optics)
In interference microscopy, the difference in optical path between the light passing through the specimen and the light bypassing the specimen. Also known as optical-path difference.

retardation

Reduction in the rate of hardening or setting; an increase in the time required to reach initial and final set or to develop early strength of fresh concrete, mortar, plaster, or grout.
References in periodicals archive ?
He said the fact that no one in his or his wife's family has mental retardation contributed to the rejection they face by their relatives.He took his children to a special school but since they could not comprehend anything, he pulled them out and stayed with them at home.
A study was carried out to explore job satisfaction among 112 female teachers working in the centers for children with mental retardation. A statistically significant difference in job satisfaction was found in terms of level of earning and incentives.10
The aim of investigating a child with mental retardation or developmental delay is to reach etiologic diagnosis.
AIMS AND OBJECTIVES: To study the factors affecting severity of mental retardation in a tertiary child guidance referral centre.
Growth retardation is mostly related with insufficient calorie intake; the cause is organic in a small portion.
The World Health Organization (WHO)'s International Classification of Diseases (ICD-10) [11] defines mental retardation as 'a condition of arrested or incomplete development of the mind, which is especially characterised by impairment of skills manifested during the developmental period, skills which contribute to the overall level of intelligence, i.e.
Clinically, all cases had mental-motor retardation and hypotonia.
Florida statute [section] 921.137(1), adopted in 2001 prior to the Atkins decision, but after Hall' s mitigation resentencing hearing, defines mental retardation as "significantly subaverage general intellectual functioning existing concurrently with deficits in adaptive behavior and manifested during the period from conception to age 18." It defines "significantly subaverage general intellectual functioning" as "performance that is two or more standard deviations from the mean score on a standardized intelligence test specified in the rules of the Agency for Persons with Disabilities." Two standard deviations of 15 points each from the mean of 100 is an IQ score of 70.
"At the time of the trial back in 2000, the doctor had never even diagnosed mental retardation in a patient before."
where [k.sub.Rs] is the structural retardation factor.
But does a consensus of Texas citizens agree that all persons who might legitimately qualify for assistance under the social services definition of mental retardation be exempt from an otherwise constitutional penalty?"