文档介绍：婴幼儿心理健康的标准(Infant mental health standards)
Infancy is the beginning of life. In this period, the basic features of humaretion, pain, or discomfort to an adult through a cry. From about fourth months, infants should start babbling, the consonants and vowels connected into a syllable, and regardless of their parents speak what language, they are likely to say is a "world language”, namely mama, Baba, dada, gagaga etc.. By nearly twelfth months, the baby should generally use the word "Mama" - a word with meaning and a sentence. To 18 months or so, the baby should be able to speak two words, such as "mother water”, "eat. From eighteenth months to 24 months, the child,s language skills should develop rapidly. They will begin using phrases or sentences composed of 3 words or more than 3 words. At this point, their vocabulary should be expanded from about 20 to more than 300. Between the ages of two and 3, children (from the age of 1 to 6 years old, commonly referred to as young children) should have the ability to use various basic types of sentences. Between 3 and 6 years of age, language development will be critical for young children. During this period, young children develop their language skills quickly through games, studies and labor activities. His speech should quickly become accurate and magically master the grammar of his native language and speak a native language witho