Aim:
This symposium aimed at clarifying various requisites for the ontogeny of language function.
Yamada insisted that the merging of the social and physical worlds such as emergence of appropriate manipulation and the formation of three-component-relation was accounted for by the important change of the action prior to speech.
Kawakami explained the possibility that social vocalization in early infancy changes the development of verbalization. And even he presented a new behavioral category (named Formal Communicating Behavior: F. C. B.) to describe his opinion.
Hatano's speech tried to propose an explanation of the cognitive universals in early language acquisition by children, and tried to clarify the acquisition of functional negation expressed by gesture, sound, intonation patterns, language and so on.
Yamagami insisted that her work with a number of autistic children demonstrated some significance of the child's capacity to make use of his mother as an important person for his further cognitive growth.
