Articles #Demarşi

Let's take a look at the society. According to studies, it has been revealed that the rate of mild mental retardation (IQ: 55-70) is between 10-20% in every society. It is suggested that the rate of non-intelligent (IQ: 70-90) is between 25-40% and the total of this group with mild mental retardation constitutes the majority of the societies.