Survey on intelligence, found that in the 14 years The average level of intelligence or IQ of children did not increase as other countries by children ไทยอา Yu 6-14 years. With the intelligence of 914 which mean IQ intelligence down when the older, children were 50 with high level of intelligence ต่ำกว่าเกณฑ์ปกติ is 80 only percentage 11 with average intelligence than usual