Idiot (idiot) often refers to a stupid bird: an interpretation of As Idiot as a Duck [edit this paragraph] 1. A mental baby disease. Patients are mentally retarded, slow to move, and have low language skills. In severe cases, they can't take care of themselves. It also refers to mental retardation and inconsistency in words and deeds. Related literature: In the 18th year of Zuozhuan Chenggong, "Zhou Zi has a younger brother but no wisdom" Du Jin's foreword: "Without wisdom, the so-called idiot is in the world." Yan Shigu quoted Wei Linyan's song of the Three Kingdoms as saying: "Crazy people are idiots today." Qing Qin Du Hui's "Shu Ping Shang Yi": "Liang Wudi gave his life to the Buddhist temple, and I offered 100 million yuan in redemption. He asked to be returned to the palace, and all three requests were accepted. This is either an idiot or a child's ear. " Bing Xin's Return to the South: "I would rather be a numb, idiot and muddleheaded person and live in a happy, cowardly and dependent environment all my life." 2. Idiot patient. Also refers to the mentally retarded. 3. Swearing, satire and contempt. You are such an idiot. You can't even do that. Related literature [Edit this paragraph] Cao Yu's prelude to "Yuanye": "He is an idiot, without father or mother, placed under the fence of a distant relative, herding sheep and firewood for people and doing some strange things." Zhang Xianliang's soul and body: "That son later became an idiot." Mental retardation is a disease, which refers to the development disorder of the central nervous system caused by various reasons during the embryonic period or after birth, and its clinical feature is mental retardation. Mental retardation generally refers to the failure to reach the normal level in the process of intellectual development. Scholars all over the world use different terms to describe mental retardation, such as congenital stupidity, congenital dementia, mental retardation, mental retardation, mental retardation, mental retardation, mental retardation, mental retardation, mental retardation, mental retardation, mental retardation, mental retardation and so on. Understanding the concept of mental retardation is not only of great theoretical significance, but also of great practical significance. The theoretical significance of the definition of mental retardation lies in revealing the laws and characteristics of children's abnormal mental development. Its practical significance is more important. It can not only distinguish between normal and abnormal intelligence of children, but also determine what kind of education children receive: children with normal intelligence should receive education from ordinary schools, while children with mental retardation should enter educational institutions specially set up for them. Mental retardation has become a common disease in human nervous system. It is reported that there are about 6 million children and adults with mental retardation in the United States, accounting for about 3% of the total population of the United States. The prevalence of mental retardation in the Soviet Union accounts for 1-3%. Every year, 654.38+300 million infants with brain defects are born in North America. About 1 10,000 children with mental retardation are born every year in China. Most of them are raised by welfare centers managed by the state. According to the severity of mental retardation, it can be divided into several grades. Early in the United States, mental retardation was divided into three types: slow (IQ 50-69), stupid (IQ 25-49) and idiot (IQ below 25). The current education in the United States can be divided into three types: educatable, trainable and supervised. In China, according to mental retardation, mental retardation is usually divided into three types: idiot, idiot and dull. Idiots are the most retarded. Idiot children can't talk, can't count and don't know how to avoid danger. Idiot children can't live independently, and most of them die in infancy. Stupid children are seriously mentally retarded and can learn to speak, but they can't speak clearly and their words don't convey their meaning. After training, these children can take care of their daily lives, learn some simple mechanical operations, and live to adulthood under the supervision of adults. Mental retardation is mild. Although these children can go to school, their academic performance is poor, and those who are slow can live independently and engage in simple labor. Most of them have poor living standards and make little contribution to society. Idiot or Idiocy comes from the Greek word Idiototos, which means a person who cannot take responsibility in public life (Chen Ronghua, min 8 1). The word Idiot Savant was coined by British doctor Langdon Down more than 100 years ago, when the word idiot was not very negative. Although there have been many new explanations for the definition of mental retardation in recent thirty or forty years, there is almost no doubt that the word idiot refers to the so-called severe and extremely severe mental retardation in pedagogy, psychology, medicine and sociology (Wu Yongyi, 1996). The word Savant comes from French, which means to study or be a scholar. Individuals have rich knowledge or outstanding achievements in a certain academic field. Idiot scholars and autistic scholars are unique phenomena among children and adolescents with mental retardation and autism, and there is no precise definition at present.