What constitutes a person's IQ?

constitutes a person's i Q? The term i Q or intelligent quotient generally describes a score on a test that rates the subject's cognitive ability as compared to the general population. I Q tests use a standardized scale with one hundred as the median score on most tests. A score between ninety and a hundred ten or the media and plus or minus ten indicates average intelligence. A score above one thirty indicates exceptional intelligence, and a score below seventy may

indicate mental retardation. Like their predecessors, modern tests do take into account the age of the child when determining an IQ score. Children are graded relative to the population at their developmental level. What is this cognitive ability being measured? Simply put, i Q tests are designed to measure your general ability to solve problems and understand concepts. This includes reasoning ability, problem solving ability, ability to perceive relationships between things,

and the ability to store and retrieve information. I Q tests measure this general intellectual ability in a number of different ways. They may test, for example, spatial ability the ability to visualize manipulations of shapes, mathematical ability, the ability to solve problems and use logic. Language ability. This could include the ability to complete sentences or recognize words when letters have been rearranged or removed, and memory ability, the

ability to recall things presented either visually or orally. Questions in each of these categories test for a specific cognitive ability, but many psychologists hold that they also indicate general intellectual ability. Most people perform better on one type of question than on others, but experts have determined that for the most part, people who excel in one category do similarly well in the other categories, and if someone does poorly in any

one category, he also does poorly in the others. Based on this, these experts theorized there is one general element of intellectual ability that determines other specific cognitive abilities. Ideally, and i Q test measures this general factor of intelligence abbreviated as G. The best tests therefore feature questions from many different categories of intellectual ability, so that the test

isn't weighted toward one specific skill. Because i Q tests measure your ability to understand ideas and not the quantity of your knowledge, learning new information does not automatically increase your i Q. Learning may exercise your mind, however, which could help to develop greater cognitive skills, but scientists do

not fully understand this relationship yet. The connection between learning and mental ability is still largely unknown, as are the workings of the brain and the nature of intellectual ability. In general, intellectual ability does seem to depend more on genetic factors than on environmental factors, but most experts agree that environment plays some significant role in its development. Still, everyone wants to know can you increase your i Q score?

There is some evidence that children develop higher intellectual ability if they receive better nurturing and diet as babies, and a higher degree of intellectual stimulation in preschool tends to boost children's IQ scores for a few years of elementary school, but it doesn't permanently increase i Q scores for the most part, adult i Q scores don't significantly increase over time.

There's evidence that maintaining an intellectually stimulating atmosphere, for example, by learning new skills or solving puzzles, boost some cognitive ability, similar to the way maintaining an exercise regimen boost physical ability. But these changes aren't permanent and do not have much effect on i Q scores, So your i Q score is relatively stable no matter what education you acquire. This

does not mean that you can increase your intelligence. I Q tests are only one imperfect method of measuring certain aspects of intellectual ability. A lot of critics point out that i Q tests don't measure creativity, social skills, wisdom, acquired abilities, or a host of other things we consider to be aspects of intelligence. The value of i Q tests is that they measure general cognitive ability, which has been proven to be fairly accurate as an indicator of

intellectual potential. There is a high positive correlation between i Q and success in school and the workplace, but there are many many cases where i Q and success do not coincide. Be sure to check out our new video podcast, Stuff from the Future. Join How Stuff Work staff as we explore the most promising and perplexing possibilities of tomorrow. The how Stuff Works I Find app has arrived down

at it today on iTunes. Protect your photos, music and documents and access them anywhere with Mosey by E m C, the most trusted name and cloud back up, and now save ten percent with promo code brain Stuff at mosey dot com. Get started today at m o z y dot com.