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Longevity Quotient
Longevity Quotient (LQ) is a simplified measure to enable normalized comparisons of various species' longevity. It shares some similarity with measures such as Intelligence Quotient. It originated with Steven N. Austad and Kathleen E Fischer's 1991 paper on mammalian aging. The detailed description of LQ was originally defined as the ratio of Actual Lifespan divided by Predicted Lifespan obtained from the Nonflying Eutherans (NFE) regression relating observed lifespan and body mass relationship. This followed the work of John Prothero and Klaus Jurgens who strictly looked to related longevity and body mass. Austad spells out that "Excluding bats and marsupials mean LQ is 1.0 by definition" Aging and longevity researchers utilize LQ with additional metrics such as maximum species life span (MLSP). Rochelle Buffenstein considers MLSP as an important species aging characteristic that can vary over a factor of 40,000 throughout the animal kingdom, and is related species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intelligence Quotient
An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. Originally, IQ was a score obtained by dividing a person's mental age score, obtained by administering an intelligence test, by the person's chronological age, both expressed in terms of years and months. The resulting fraction (quotient) was multiplied by 100 to obtain the IQ score. For modern #Current tests, IQ tests, the test score, raw score is Data transformation (statistics), transformed to a normal distribution with mean 100 and standard deviation 15. This results in approximately two-thirds of the population scoring between IQ 85 and IQ 115 and about 2 percent each Intellectual giftedness, above 130 and Intellectual disability, below 70. Scores from intelligence tests are estimates of intelligence. Unlike, for example, distance and mass, a concrete measure of intelligence cannot be achieved given the abstract nature of the concept o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steven N
Stephen or Steven is an English first name. It is particularly significant to Christians, as it belonged to Saint Stephen ( ), an early disciple and deacon who, according to the Book of Acts, was stoned to death; he is widely regarded as the first martyr (or " protomartyr") of the Christian Church. The name, in both the forms Stephen and Steven, is often shortened to Steve or Stevie. In English, the female version of the name is Stephanie. Many surnames are derived from the first name, including Stephens, Stevens, Stephenson, and Stevenson, all of which mean "Stephen's (son)". In modern times the name has sometimes been given with intentionally non-standard spelling, such as Stevan or Stevon. A common variant of the name used in English is Stephan ( ); related names that have found some currency or significance in English include Stefan (pronounced or in English), Esteban (often pronounced ), and the Shakespearean Stephano ( ). Origins The name "Stephen" (and its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
