从发展的观点来分析,儿童的生长与发展虽然基本上是連續的与逐漸的,但有时加速,有时減速,并不是直綫的与等速的。許多作者(Courtis 1937、1948、Thorpe和Cruze 1956、Watson和Lowrey 1958等)都指出,自嬰孩发展至成人可能存在若干显然加速的时期,因而形成发展的周期或閉环。从心理、生理与解剖等多方面来綜合探討上述周期或閉环,无疑是儿童发展分期的重要客观基础。就嬰孩至7岁这个 From a development point of view, although children’s growth and development are basically continuous and gradual, they sometimes accelerate, sometimes slow down, not straight-line and constant speed. Many authors (Courtis 1937, 1948, Thorpe and Cruze 1956, Watson and Lowrey 1958, etc.) point out that there may be some marked periods of acceleration from the development of babies to adults, thus creating a cyclical or closed cycle of development. From the aspects of psychology, physiology and anatomy, it is undoubtedly an important objective basis for the staging of children’s development that these cycles or loops should be comprehensively explored. Baby to 7 years old this