Posted by: jah_man | 2008/01/22

what influences ...

Pls what influenes the I.Q of a person

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Various factors influence it --- inheritance, upbringing ( both in terms of intelleictual stimulation and opportunities to learn and physical health and nutrition). But as I said in reply to your other question, IQ isn'tthe beginning and end of it all. There are people with high IQ who are lazy or antisocial, and never achieve anything worth a cent, and others with lower IQ who achieve a great deal, for themselves and others, because they work hard and keep trying.
Oh, and John may be right considering the last time, in the dim and distant past, when my IQ was measured at school !

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Posted by: John | 2008/01/23

IQ is a measure of relative intelligence determined by a standardized test (there is no universal test that is culture-fair). Binet came up with the idea of mental age when he noticed that children are increasingly able to learn difficult concepts and perform difficult tasks as they get older. Most children reach the same level of complexity at about the same time, but some children are slower reaching those levels. A 6-year-old child who can do no more than a 3-year-old has a mental age of 3. Wilhelm Stern divided the mental age by the chronological age to get a “Mental Quotient.” A 6-year-old able to do only what a 3-year-old can do has a Mental Quotient of .5 or ½ (3 divided by 6). Lewis Terman later multiplied the Mental Quotient by 100 to remove the fraction and the Intelligence Quotient (IQ) was born! Therefore, the equation is: Mental Age/Chronological Age X 100 = Intelligence Quotient. The 6-year-old with the Mental Quotient of ½ has an IQ of 50.

The majority of people have an IQ between 85 and 115, giving an average 100.

There are two main theories (three, if you combine them) about influences over IQ: the nature/nurture. One theory is that you are born with you intelligence and that is that and the other is that one can be materially influenced by environment. For example, a privileged child, in a comfortable home, with access to everything, and the right teaching, can be given a head start. One can argue these endlessly but perhaps one can see merit in that a good environment may only succeed if the intelligence is already there. Sort of saying that the ground has to be fertile for the seed to grow…

For example, the first femal chess grandmaster, Susan Polgar, was taught chess at the age of 4. Susan and her two younger sisters, Grandmaster Judit and International Master Zsófia, were part of an educational experiment carried out by their father László Polgár, who sought to prove that children could make exceptional achievements if trained in a specialist subject from a very early age. Looks like he was right!

As for being a genius, a good definition is: “a genius is a person of great intelligence, who shows an exceptional natural capacity of intellect, especially as shown in creative and original work. Geniuses always show strong individuality and imagination, and are not only intelligent, but unique and innovative. The term may also be applied to someone who is a polymath, such as Goethe or da Vinci, but a polymath is generally considered a well-rounded genius, gifted in many areas, e.g. math, physics, art, poetry, etc. Einstein, for instance, was a genius in physics, but not necessarily in other areas such as art or literature.

Although the term "genius" is sometimes used to denote the possession of a superior talent in any field, e.g., Roger Federer may be said to have a genius for tennis or Nelson Mandela for statesmanship, in many of these cases the term is applied incorrectly and should instead be used specifically to denote an exceptional natural capacity of intellect and creative originality in areas of art, literature, music, science and mathematics.” Tx to Wikipaedia.

As for IQ measurement, ratings and grades and their general meanings:

• IQ < 20 - Profound mental retardation
• 21-35 - Severe mental retardation
• 36-50 - Moderate mental retardation
• 51-70 - Mild mental retardation
• 71 - 79 - Borderline deficiency
• 80 - 89 – Dullness
• 90 - 109 - Normal or average intelligence
• 110 - 114 - Superior intelligence
• 115-124 - Above average (e.g., university students)
• 125-134 - Gifted (e.g., post-graduate students)
• 135-144 - Highly gifted (e.g., intellectuals)
• 145-154 - Genius (e.g., professors)
• 155-164 - Genius (e.g., Nobel Prize winners)
• 165-179 - High genius
• 180-200 - Highest genius
• >200 - "Unmeasurable genius"

Looks like the CS is a genius – IQ 145-154!

More notes on High IQ and Genius IQ:

• Einstein was considered to "only" have an IQ of about 160.
• Mensa is a society for people with high IQ, in the top 2% (1 in 50).

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