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Related to chronological age: mental age, biological age

AGE. The time when the law allows persons to do acts which, for want of years, they were prohibited from doing before. See Coop. Justin. 446.
     2. For males, before they arrive at fourteen years they are said not to be of discretion; at that age they may consent to marriage and choose a guardian. Twenty-one years is full age for all private purposes, and the may then exercise their rights as citizens by voting for public officers; and are eligible to all offices, unless otherwise provided for in the constitution. At 25, a man may be elected a representative in Congress; at 30, a senator; and at 35, he may be chosen president of the United States. He is liable to serve in the militia from 18 to 45. inclusive, unless exempted for some particular reason.
     3. As to females, at 12, they arrive at years of discretion and may consent to marriage; at 14, they may choose a guardian; and 21, as in males, is fun Age, when they may exercise all the rights which belong to their sex.
     4. In England no one can be chosen member of parliament till he has attained 21 years; nor be ordained a priest under the age of 24; nor made a bishop till he has completed his 30th year. The age of serving in the militia is from 16 to 45 years.
     5. By the laws of France many provisions are made in respect to age, among which are the following. To be a member of the legislative body, the person must have attained 40 years; 25, to be a judge of a tribunal de remiere instance; 27, to be its president, or to be judge or clerk of a court royale ; 30, to be its president or procurer general; 25, to be a justice of the peace; 30, to be judge of a tribunal of commerce, and 35, to be its president; 25, to be a notary public; 21, to be a testamentary witness; 30, to be a juror. At 16, a minor may devise one half of his, property as if he were a major. A male cannot contract marriage till after the 18th year, nor a female before full 15 years. At 21, both males and females are capable to perform all the act's of civil life. Toull. Dr. Civ. Fr. Liv. 1, Intr. n. 188.
     6. In the civil law, the age of a man was divided as follows: namely, the infancy of males extended to the full accomplishment of the 14th year; at 14, he entered the age of puberty, and was said to have acquired full puberty at 18 years accomplished, and was major on completing his 25th year. A female was an infant til 7 years; at 12, she entered puberty, and acquired full puberty at 14; she became of fall age on completing her 25th year. Lecons Elem. du Dr. Civ. Rom. 22.
     See Com. Dig. Baron and Feme, B 5, Dower, A, 3, Enfant, C 9, 10, 11, D 3, Pleader, 2 G 3, 2 W 22, 2 Y 8; Bac. Ab. Infancy and Age; 2 Vin. Ab. 131; Constitution of the United States; Domat. Lois Civ. tome 1, p. 10; Merlin, Repert. de Jurisp. mot Age; Ayl. Pand. 62; 1 Coke Inst. 78; 1 Bl. Com. 463. See Witness.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
The determination of biological age is fundamental to estimate the potential performance of athletes, since some puberty characteristics can occur in distinct chronological ages. With such purpose, researchers commonly use maturity assessment methods based in secondary sexual characteristics, which may not reflect changes within narrow age ranges (Mortatti & Arruda, 2007) in traits related to sports performance, for instance, stature, fat free mass, and strength (Fragoso et al.; Figueiredo et al., 2009).
Analyzing which groups had a statistically significant difference between each other, it was possible to verify that both the EG and the CG1 had a statistically significant inferior performance when compared, separately, to the CG2, the children with typical development paired by the chronological age. Thus, the EG obtained a similar performance, showing no statistical difference compared to the CG1, which was paired by mental age (Table 2).
Caption: Figure 1: Scatterplot of difference between dental and chronological age (DA-CA) and chronological age (age) for the congenitally missing permanent teeth (CMPT) group and nonaffected group (control group).
Third, in many contexts, other biological and social markers of age are as, if not more, important than chronological age. These include puberty, marital status, parenthood and child rearing, formal employment, enrolment in education, and menopause.
They consider themselves to be more active and in better physical shape than their parents when they were the same chronological age, and they see shopping as a form of social interaction, preferring pleasant environments where they can socialize and exchange experiences with other consumers.
adults aged 30-74 years was substantially higher than their chronological age. On average, men and women had a predicted heart age 7.8 and 5.4 years older, respectively, than their chronological age, if the selected CVD risk factors were in an ideal range (not smoking, having normal systolic blood pressure ([less than or equal to]120 mmHg) and BMI <25, and not having diabetes).
Furthermore, three groups (A–C) children reached the mean score of 5.6, 5.1, and 4.8 points at 24 months afterfirst fitted at their mean chronological age of 9, 16, and 21 months, respectively.{Figure 1}{Table 2}
The skeletal responses were less in subjects both before and after maximum pubertal growth.7 In 1972 Lam- parski created the first standards of cervical vertebral maturation related to chronological age and to skeletal maturation as observed on hand wrist radiograph.8 The shape and size of the vertebral bodies are relatively similar and regular so it is feasible to evaluate skeletal maturation qualitatively and quantitatively by mea- suring parameters of the vertebral bodies.9 Hassel and Farman (Fig 1-b) indicated the shapes of the cervical vertebrae change during each stage of skeletal growth and stated that skeletal maturation stages and residual growth potential of an individual can be determined in this way.10
A research letter published online by JAMA Internal Medicine found that older people who felt three or more years younger than their chronological age had a lower death rate compared with those who felt their age or who felt more than one year older than their actual age.
Neil is not alone when it comes to being biologically younger than one's chronological age. There are many more residents here who are following this unique health concept to stay younger and fitter.
"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.