The purpose of the present study was to investigate effects of facilitating exploratory manipulations by a girl with Rett syndrome. At first, although she often looked at building blocks, she appeared to have great difficulty interacting with the blocks, and the assistant's guidance seemed to make her nervous. After towers of blocks were built for her so that she could manipulate the blocks, she
... [Show full abstract] became able to push and crash the towers with her upper body and arms. Later, with the assistant's guidance, she became able to build towers. The discussion deals with the importance of ensuring avoidance and helping the girl approach objects, utilizing any movements that she made as clues for exploratory manipulation, and establishing a communicative relationship so that she accepted the assistant's guidance.