1988 年 36 巻 4 号 p. 291-296
The aim of this study was (1) to confirm the phenomenon (a) that the children from 4 to 7 years old tend to change an intransive verb sentence into a corresponding transitive one ; (2) to test the basic idea of the transformational generative grammar, and (3) to know when these two sentences can be distinguished. The phenomenon (a) was confirmed and it was found that children sometimes change a transitive verbsentence into an intransitive one: (phenomenon (b)) but both phenomena were consistent with the interpretation of transformational generative grammar. The phenomenon (a) was explained by the assumption that there was an ‘agent’ in the underlying structure: ([+agentiveness]). And the phenomenon (b) was found as an ‘experimenter’ instead of ‘agent’: ([-agentiveness]). It was concluded that it is difficult for children to generate an intransitive verb sentence whose underlying structure was of [+agentiveness], and a transitive one, [-agentiveness].