Twenty four mentally retarded children aged 9 - 13 years old (average 11.4)with IQ ranged from 38 to 67(averaged 52. 5) ,and 24 normal children aged 9-12 years old (average 10. 5)participated these experiments.

 
  • 弱智儿童被试24 人;年龄9-13岁;平均年龄11.;4岁。 智商(IQ)38-67;平均智商52
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