Intelligent Quotient (I.Q.) is a measure of a person’s reasoning ability. It is supposed to measure the intelligence of an individual and how well someone can use information and logic to answer questions or make predictions along with the measurement of short and long term memory.

French psychologist Alfred Binet created the first intelligence test in the early 1900s. However, modern I.Q. testing in the United States stems from the work of Henry Herbert Goddard.

I.Q. tests should certainly not be discounted, but it’s important not to rely on them as the sole measure of intelligence. The value of IQ tests is determined more by what they correlate with than what they measure. The reason that IQ tests correlate with so many important outcomes is that they have undergone a long process akin to natural selection.

Clinical psychologists generally regard IQ scores as having sufficient statistical validity for many clinical purposes.If we think of IQ as an estimate of pure potential, including acquired knowledge tests in IQ is a very bad idea.

IQ tests can measure aspects of visual- spatial processing and auditory processing as well as short-term memory and processing speed.

IQ tests measure understanding of certain cognitive tools that facilitate reasoning and problem solving.

IQ tests measure knowledge of well-chosen words, phrases and stories.

The relationship between IQ, curiosity, discipline, and achievement is like of length, width, depth, and volume.


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