Abstract
A subject, mentally retarded child, received training with the purpose of developing her textual behavior as regards "the Chinese characters indicating busses' destinations". The subject could not go to school independentlly because of lack of textual behavior regarding these characters. At baseline I, she had not acquired the textual behavior at all. At baseline II, however, the suject's response was 100% correct. A generalization test and a post check proved possibility of applying to daily life and maintenance of the textual behavior. It would be suggested that she is going to school independently often a short term training in an actual situation.
