How does the evaluation of IQ in an IQ test takes place????

Question

I mean what is the marking and evaluating criteria......
How is the marking done as we always have a score for it???

Answer 1

IQ tests are usually standardized to produce a score, based on the amount of questions you answer correctly and the difficulty of them.

Historically IQ has been mental age divided by chronological age, but in adulthood, this way of measuring is faulty. Hence the point-scored tests.

Answer 2

Every IQ test is different, and none is really an accurate measure of "intelligence". On most IQ tests there each question has a single "correct" response, and the overall IQ is determined by the total number of correct responses. Some tests weight questions, so those considered more difficult are given more value than those that are easier. Still others stress creativity. Instead of a single right answer, credit is assigned to the thinking process and the ability to generate unique or interesting solutions.

The idea behind IQ in general is that a single person's "intelligence" is compared with the average for others of the same age. An average score on any IQ test is supposed to be 100 (which literally means a person's "mental age" is 100% of their physical age--they have roughly the same intelligence as others their age). On most IQ tests the standard deviation is about 15, so about two-thirds of all people have IQs between 85 (100-15) and 115 (100+15). About 95% of all people have IQs between 70 and 130 (subtracting and adding 2 standard deviations). IQs below 70 and above 130 are considered execptional in both directions.

It is important to realize, though, that ANY IQ score is really just a measure of performance on that specific test. Modern educators recognize many types of intelligence, and no single exam can account for all of them.

Answer 3

Most tests on the internet are solely based on the number of questions that you answer correctly, thus making them inaccurate.(my 7 year old brother received an "amazing"score of 160 after taking the same test six times,and he still thinks Beijing is a city in Brazil). An accurate test would take the age of the participent into consideration as different ages experience different variations in their scores. A good test may also be timed, insuring a participent does'nt look the answer up on google as he completes the test.