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Hey folks, let's gather up and measure the average IQ. All you need to do is enter your intelligence quotient into the above form. I really hope that your entry is the one that's going to boost the average! ;)
Each IQ test suggests the reference chart for determining the category to which its result belongs to. Here are 2 of the most common refference charts which use different standard deviations to classify the scores of IQ test: |
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Lewis Terman's
Stanford-Binet classification |
Wechsler's classification (uses a standard deviation of 15) |
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| IQ Range ("Deviation IQ") | Intelligence Classification | IQ Range ("Deviation IQ") | Intelligence Classification | |
| 152 and over | Genius and near genius | 130 and over | Very superior | |
| 148 - 151 | Very superior intelligence | 120 - 130 | Superior | |
| 132 - 148 | Superior intelligence | 110 - 120 | Bright normal | |
| 116 - 132 | Above average intelligence | 90 - 110 | Normal | |
| 84 - 116 | Normal or average intelligence | 80 - 90 | Dull normal | |
| 68 - 84 | Dullness | 70 - 79 | Borderline | |
| 52 - 68 | Borderline deficiency | 50-55 to 70 | Mild Mental Retardation (MR) | |
| Below 52 | Mental Deficiency | 35-40 to 50-55 | Moderate MR | |
| 20-25 to 35-40 | Severe MR | |||
| Below 20-25 | Profound MR | |||