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Social Science Of Aging
Aging has a significant impact on society. People of different ages and gender tend to differ in many aspects, such as legal and social responsibilities, outlooks on life, and self-perceptions. Young people tend to have fewer legal privileges (if they are below the age of majority), they are more likely to push for political and social change, to develop and adopt new technologies, and to need education. Older people have different requirements from society and government, and frequently have differing values as well, such as for property and pension rights. Older people are also more likely to vote, and in many countries the young are forbidden from voting. Thus, the aged have comparatively more, or at least different, political influence. In different societies, age may be viewed or treated differently. For example, age may be measured starting from conception or from birth, and starting at either age zero or age one. Transitions such as reaching puberty, age of majority, or reti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aging
Ageing ( BE) or aging ( AE) is the process of becoming older. The term refers mainly to humans, many other animals, and fungi, whereas for example, bacteria, perennial plants and some simple animals are potentially biologically immortal. In a broader sense, ageing can refer to single cells within an organism which have ceased dividing, or to the population of a species. In humans, ageing represents the accumulation of changes in a human being over time and can encompass physical, psychological, and social changes. Reaction time, for example, may slow with age, while memories and general knowledge typically increase. Ageing increases the risk of human diseases such as cancer, Alzheimer's disease, diabetes, cardiovascular disease, stroke and many more. Of the roughly 150,000 people who die each day across the globe, about two-thirds die from age-related causes. Current ageing theories are assigned to the damage concept, whereby the accumulation of damage (such as DNA ox ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Asian Age Reckoning
Countries in the East Asian cultural sphere (China, Korea, Japan, Vietnam, and their diasporas) have traditionally used specific methods of reckoning a person's numerical age based not on their birthday but the calendar year, and what age one is considered at birth. These methods currently see only limited use in certain contexts and areas, mainly in South Korea and Taiwan. A person's age will always be one or two years greater than his or her age in the international norm. In the context of South Korea, this reckoning is often referred to as Korean age, but in 2022, the government of South Korea announced plans to switch from this Korean age system to the system used by most other countries in the world. In traditional China, where the system originated millennia ago, people were considered to be ''one "year old"'' at birth (one ''sui'' 嵗/岁), and on New Year's Day of the lunar calendar, another year was added to their age. In other words, age was counted with ordinal n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marriageable Age
Marriageable age (or marriage age) is the general age, as a legal age or as the minimum age subject to parental, religious or other forms of social approval, at which a person is legitimately allowed for marriage. Age and other prerequisites to marriage vary between jurisdictions, but in the vast majority of jurisdictions, the marriage age as a right is set at the age of majority. Nevertheless, most jurisdictions allow marriage at a younger age with parental or judicial approval, and some also allow adolescents to marry if the female is pregnant. The age of marriage is most commonly 18 years old, but there are variations, some higher and some lower. The marriageable age should not be confused with the age of majority or the age of consent, though they may be the same in many places. The 55 parties to the 1962 Convention on Consent to Marriage, Minimum Age for Marriage, and Registration of Marriages have agreed to specify a minimum marriage age by statute law‚ to override cus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Age Of Criminal Responsibility
The age of criminal responsibility is the age below which a child is deemed incapable of having committed a criminal offence. In legal terms, it is referred to as a defence/defense of infancy, which is a form of defense known as an excuse so that defendants falling within the definition of an "infant" are excluded from criminal liability for their actions, if at the relevant time, they had not reached an age of criminal responsibility. After reaching the initial age, there may be levels of responsibility dictated by age and the type of offense committed. Under the English common law the defense of infancy was expressed as a set of presumptions in a doctrine known as doli incapax'. A child under the age of seven was presumed incapable of committing a crime. The presumption was conclusive, prohibiting the prosecution from offering evidence that the child had the capacity to appreciate the nature and wrongfulness of what they had done. Children aged 7–13 were presumed incapable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Age Of Consent
The age of consent is the age at which a person is considered to be legally competent to consent to sexual acts. Consequently, an adult who engages in sexual activity with a person younger than the age of consent is unable to legally claim that the sexual activity was consensual, and such sexual activity may be considered child sexual abuse or statutory rape. The person below the minimum age is considered the victim, and their sex partner the offender, although some jurisdictions provide exceptions through " Romeo and Juliet laws" if one or both participants are underage, and are close in age. The term ''age of consent'' typically does not appear in legal statutes. Generally, a law will establish the age below which it is illegal to engage in sexual activity with that person. It has sometimes been used with other meanings, such as the age at which a person becomes competent to consent to marriage, but consent to sexual activity is the meaning now generally understood. It sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Legal Drinking Age
The legal drinking age is the minimum age at which a person can legally consume alcoholic beverages. The minimum age alcohol can be legally consumed can be different from the age when it can be purchased in some countries. These laws vary between countries and many laws have exemptions or special circumstances. Most laws apply only to drinking alcohol in public places with alcohol consumption in the home being mostly unregulated (an exception being the UK, which has a minimum legal age of five for supervised consumption in private places). Some countries also have different age limits for different types of alcohol drinks. The majority of countries have a minimum legal drinking age of 18. The most commonly known reason for the law behind the legal drinking age is the effect on the brain in adolescents. Since the brain is still maturing, alcohol can have a negative effect on the memory and long-term thinking. Alongside that, it can cause liver failure, and create a hormone imb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voting Age
A voting age is a minimum age established by law that a person must attain before they become eligible to vote in a public election. The most common voting age is 18 years; however, voting ages as low as 16 and as high as 25 currently exist (see list below). Most countries have set a minimum voting age, often set in their constitution. In a number of countries voting is compulsory for those eligible to vote, while in most it is optional. When the right to vote was being established in democracies, the voting age was generally set at 21 or higher. In the 1970s many countries reduced the voting age to 18. The debate is ongoing in a number of countries on proposals to reduce the voting age to or below 18. In Brazil, for example, the minimum age lowered from 18 to 16 years old in the 1988 constitution. History In 1890, Law No. 5, 1890, of the South African Republic, commonly known as Transvaal, set a voting age there of 18 years. The effort was, like later legislation expandin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fertilisation
Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give rise to a new individual organism or offspring and initiate its development. Processes such as insemination or pollination which happen before the fusion of gametes are also sometimes informally called fertilisation. The cycle of fertilisation and development of new individuals is called sexual reproduction. During double fertilisation in angiosperms the haploid male gamete combines with two haploid polar nuclei to form a triploid primary endosperm nucleus by the process of vegetative fertilisation. History In Antiquity, Aristotle conceived the formation of new individuals through fusion of male and female fluids, with form and function emerging gradually, in a mode called by him as epigenetic. In 1784, Spallanzani established the need of interaction between the female's ovum and male's sperm to form a zygote in frog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fertilisation Age
Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give rise to a new individual organism or offspring and initiate its development. Processes such as insemination or pollination which happen before the fusion of gametes are also sometimes informally called fertilisation. The cycle of fertilisation and development of new individuals is called sexual reproduction. During double fertilisation in angiosperms the haploid male gamete combines with two haploid polar nuclei to form a triploid primary endosperm nucleus by the process of vegetative fertilisation. History In Antiquity, Aristotle conceived the formation of new individuals through fusion of male and female fluids, with form and function emerging gradually, in a mode called by him as epigenetic. In 1784, Spallanzani established the need of interaction between the female's ovum and male's sperm to form a zygote in fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menstruation
Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone levels and is a sign that pregnancy has not occurred. The first period, a point in time known as menarche, usually begins between the ages of 12 and 15. Menstruation starting as young as 8 years would still be considered normal. The average age of the first period is generally later in the developing world, and earlier in the developed world. The typical length of time between the first day of one period and the first day of the next is 21 to 45 days in young women. In adults, the range is between 21 and 31 days with the average being 28 days. Bleeding usually lasts around 2 to 7 days. Periods stop during pregnancy and typically do not resume during the initial months of breastfeed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gestational Age (obstetrics)
In obstetrics, gestational age is a measure of the age of a pregnancy which is taken from the beginning of the woman's last menstrual period (LMP), or the corresponding age of the gestation as estimated by a more accurate method if available. Such methods include adding 14 days to a known duration since fertilization (as is possible in in vitro fertilization), or by obstetric ultrasonography. The popularity of using this definition of gestational age is that menstrual periods are essentially always noticed, while there is usually a lack of a convenient way to discern when fertilization occurred. Gestational age is contrasted with fertilization age which takes the date of fertilization as the start date of gestation. The initiation of pregnancy for the calculation of gestational age can differ from definitions of initiation of pregnancy in context of the abortion debate or beginning of human personhood. Methods According to American College of Obstetricians and Gynecologists, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prenatal Development
Prenatal development () includes the development of the embryo and of the fetus during a viviparous animal's gestation. Prenatal development starts with fertilization, in the germinal stage of embryonic development, and continues in fetal development until birth. In human pregnancy, prenatal development is also called antenatal development. The development of the human embryo follows fertilization, and continues as fetal development. By the end of the tenth week of gestational age the embryo has acquired its basic form and is referred to as a fetus. The next period is that of fetal development where many organs become fully developed. This fetal period is described both topically (by organ) and chronologically (by time) with major occurrences being listed by gestational age. The very early stages of embryonic development are the same in all mammals, but later stages of development, and the length of gestation varies. Terminology In the human: Different terms are used to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
