One of the criteria of mental health is what is normal intelligence and IQ above.

80。 According to Zhihu, one of the criteria of mental health is normal intelligence, with IQ above 80. Normal intelligence is the most basic psychological condition of normal life and an important standard of mental health. Intelligence is the synthesis of human observation, memory, imagination, thinking and operation ability. Intelligence tests are often used to diagnose the level of intelligence development, and those with IQ below 80 are mentally retarded.