age

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age

1. 
a. a period of history marked by some feature or characteristic; era
b. (capital when part of a name): the Middle Ages; the Space Age
2. Geology palaeontol
a. a period of the earth's history distinguished by special characteristics
b. the period during which a stage of rock strata is formed; a subdivision of an epoch
3. Myth any of the successive periods in the legendary history of man, which were, according to Hesiod, the golden, silver, bronze, heroic, and iron ages
4. Psychol the level in years that a person has reached in any area of development, such as mental or emotional, compared with the normal level for his chronological age
5. of age adult and legally responsible for one's actions (usually at 18 or, formerly, 21 years)
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Age

 

in humans, a stage of development that is characterized by specific regularities of formation of the organism and personality and by relatively stable morphophysiological and psychological traits. While age is a stage in the biological maturing of the organism, a process controlled by genetic factors, it is also a concrete result and stage of the social-psychological development of the personality and is determined by the conditions of life, training, and upbringing.

The content and form of training and upbringing are historically composed and varied according to age; in their turn they affect the determination of the boundaries and possibilities of a given age. In contemporary pedagogy and developmental psychology, several ages are differentiated with respect to the known relationships of the boundaries: infancy (from birth to one year); pre-preschool, or early childhood (from one to three); preschool (from three to seven); early school age (from seven to ten years); juvenile, or middle school (from ten to 15); and late school, or early youth (15 to 18 years old). Beyond these limits there is no generally accepted classification in the literature; only old age is considered separately. With the increased longevity noted in the 20th century, gerontology and gerontopsychology have arisen as disciplines to study the problems of prolonging the active life of a human being. Each age has a characteristic structure of cognitive, emotional, and volitional properties and qualities; forms of behavior; types of relationships to the environment; and peculiarities of structure and functioning of various organs and systems of the organism. This structure, however, is not invariable: in the 20th century a general acceleration of the physical and mental development of children has been noted. On the other hand, educational theory, in solving the problem of optimizing training, widens the possibilities of age and the boundaries of acquiring knowledge. Training must take into account not only the level of development achieved but also the development perspectives (the concept of “zones of imminent development,” as formulated by L. S. Vygotskii): the teacher must know not only what is present in a child of a given age but also what can be achieved, given certain conditions, by the child in the near future.

A. V. PETROVSKII

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

age

[āj]
(biology)
Period of time from origin or birth to a later time designated or understood; length of existence.
(geology)
Any one of the named epochs in the history of the earth marked by specific phases of physical conditions or organic evolution, such as the Age of Mammals.
One of the smaller subdivisions of the epoch as geologic time, corresponding to the stage or the formation, such as the Lockport Age in the Niagara Epoch.

AGE

(aerospace engineering)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The between-individuals random effects variance matrix (level 2) for each model indicates that individuals had significantly different AbV[O.sub.2], Sum6SF, TrunkSF, and/or BMI growth curves, both in terms of their intercepts (constant, [[mu].sub.j] < 0.05), and the slopes of their lines (biological age, [v.sub.j][X.sub.ij], p < 0.05).
However, the good news for those who have an older biological age is that tests indicate that you can restore a younger pattern of glycans, simply by overhauling your lifestyle.
Successfulness in other tests was conditioned by higher biological age which led to greater height, body mass, muscle and bone mass (in their absolute values) (Haibach et al.).
Caption: Aging snapshot Even though they were all chronologically 38, a group of 954 New Zealanders had a wide variety of biological ages. The finding is evidence that people age at different rates.
Each person's biological age was measured from a blood sample at the outset, and participants were followed up throughout the study.
The results showed that people with biological age greater than their true age were more likely to die sooner than those whose biological and actual ages were the same.
By the biological age younger than 60, women are "younger" than men on the average.
"Telomere length may be a better indicator of biological age, which can give us insight into variations in the cumulative 'wear and tear' of the organism net of chronological age," study leader David Chae, an assistant professor of epidemiology, notes in a press statement.
He zeroed in on markers linked to methylation that change with age and are present throughout the body and tested the predictive tool's effectiveness by comparing a tissue's biological age to its chronological age.
Youngsters enrolled in the programme will take part in both physical and mental activities appropriate to their biological age, gaining strength, speed, agility, balance and confidence.
Arterial age was considered increased (early vascular aging) if higher than the biological age. The differences between arterial and biological age were calculated for each participant (Dif AA).

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