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Text 2
IQ stands for Intelligence Quotient, which is a measure of a person’s intelligence found by means of an intelligence test. Before marks gained in such a test can be useful as information about a person, they must be compared with some standard, or norm. It is not enough simply to know that a boy of thirteen has scored, say, ninety marks in a particular test. To know whether he is clever, average or dull, his marks must be compared with the average achieved by boys of thirteen in that test.
In 1906 the psychologist, Alfred Binet, devised the standard in relation to which intelligence has since been assessed.
He invented a variety of tests and put large numbers of children of different ages through them. He found at what age each test was passed by the average child. For instance, he found that the average child of seven could count backwards from 20 to 1 and the average child of three could repeat the sentence: We are going to hav
A. standard
B. mark
C. measure
D. intelligence