Intellectual scale


Classification of Intelligence

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                Individuals have been classified into different categories according to their IQ. The classification done based on the distribution of IQ on Terman’s scale. Scale is as follow:

                Intelligence Quotient (IQ)            Classification

                140 and above                                   Genius

                120-139                                             Very superior

                110-119                                             Superior
                90-109                                               Average

                80-89                                                  Dull

                70-79                                                  Boarder line

                70 and below                                     Feeble minded (mentally retarded)
                                                                           a) Morons           - IQ = 50-69

                                                                            b) Imbeciles       -IQ = 25-49

                                                                             c) Idiots             -IQ below 25

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