Since the emergence of cognitive ability tests, IQ scores have been derived from a couple of methods. The first method is the ratio IQ that is based on the mental age of the test maker. The second method is the most popular one and is used currently. This method is known as deviation IQ.

Historically before the IQ chart, there was an attempt to classify people based on their intelligence levels, that is by observing their behavior in their daily lives. The IQ tests show variations in the Pinochle Scores when the same person takes the test over and over again.

Genius IQ Score Chart

IQ Electric Actuator Chart

Psychological Testing IQ chart

Birth Order on Children IQ Chart

Psychometric IQ Chart

Size Rank by IQ Score Chart

Symbols IQ Test Chart

IQ-800 Flow Chart

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