In 1959, when mental retardation threshold was set at 85 IQ
Posted on: June 27, 2025 at 11:54:19 CT
Columbian Gold MU
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Over half of American blacks fell into the retarded category.
In 1973, the retarded threshold was lowered to 70 IQ. This changed the % of blacks considered retarded from 50%+ to 12%.
Edited by Columbian Gold at 11:55:29 on 06/27/25