IQ Questions and Answers - short answers to frequently asked questionsThis page has been updated and expanded at The Logics website's IQ Questions and Answers.
by Larry Gowdy copyright©2006-2011
Definition of IQ : What is IQ?
IQ (intelligence quotient) = (Mental Age / Chronological Age) x 100.
The IQ of a child between the ages of 5 to 16 years old is calculated by dividing the child's mental age by his chronological age and then multiplying the result by 100. If a 10 year old child performs mentally at a 10 year old level, the IQ is calculated as 10 divided by 10 equaling 1, and multiplying the 1 by 100 equals an IQ of 100. If the 10 year old child mentally performs at a 20 year old level, then 20 over 10 equals 2, and multiplying 2 by 100 equals an IQ score of 200.
Adult IQ is calculated by supervised IQ testing. Adult IQ scores are specific to each IQ test and are not interchangeable between one IQ test and another. Membership qualifications to most high IQ societies require percentile ratings instead of IQ scores.
The IQ formula (MA/CA) x 100 = IQ was created as an indicator, not based on mathematical rules. The formula could have been (MA/CA)x10 or (MA/CA)x1000. IQ scores are relative numbers, of no real measurement other than to show relative differences of measurable mental performance between different people taking similar tests.
Average IQ, Gifted IQ, Genius IQ
An IQ score of 100 is average. Only one person in the world has an average IQ. Half of everyone else has a higher IQ, and the other half has a lower IQ. As IQ scores increase, so do opinions differ on what marks gifted and genius. IQ ratings are generally relative to the personal opinion and view of the person being asked (a 6'6" tall man may appear tall to a 5' tall man, but an 8' tall man thinks everyone to be short).
Generally, average IQ is about 90 to 115, talented is about 115 to 125, gifted is about 125 to 140, and about 140+ is commonly believed as having the potential for genius. It is important to note that whatsoever environment a person lives in, it is that which the person will deem normal, and all terms about intellectual levels are only relative to the individual's own personal level.
Traits of People with High IQ
Individuals with high IQs are humans just like everyone else, with similar personality strengths and weaknesses as everyone else. Some high IQers are nice, some are not so nice, and each individual has idiosyncrasies just as do all humans.
High levels of intelligence are commonly accompanied with a greater potential for simultaneously exhibiting above average skills in several fields (g and multiple intelligence). Extremely talented individuals do not easily recognize their own traits as being anything except common because there are no known higher levels of talent to compare the individual's talent to.
SQ (Sensory Quotient) Scoring
SesquIQ has helped to develop the SQ (sensory quotient) tests. The scoring method measures differences of conscious sensorial perception. Sensorially talented individuals are able to perceive and be mentally cognizant of details that the majority of other people may not recognize except at the subconscious level. A SQ score of 100 is average for over 99.9% of all tested individuals.
The predominate advantage of SQ as it applies to intelligence is that the increased conscious sensory input results in increased information for the mind to work with. All expressed intelligence relies on an individual having sensorially experienced a thing first-hand. With increased information input, the mind is able to correlate more data and arrive at a more useful and logical conclusion than if there were little information available.
Update 07-08-2005: Primarily due to frequent public misinterpretations of SQ scoring, the SQ scoring method has adopted a method that will visually appear similar to IQ scoring. SQ scores of 90, 180, 270, 360, and 450 are now 100, 125, 150, 175, and 200 respectively. Pre-July 2005 SQ scores will be adjusted accordingly. Instead of relating 90 degrees to each level, the formula now simply adds 25 points per deviation. Actual scores are unimportant, it is the percentile ranking that holds importance, and percentile rankings for each level remain unchanged relative to pre-July 2005 scores.
Additional information about IQ and the story behind modern myths of IQ: Myths, Facts, and Lies About Prodigies - A Historiography of William James Sidis
Also see The Logics website's IQ Questions and Answers.
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