The present invention is an idea IP designed to solve the problem of a relationship between a gaze and a gaze. The present invention pertains to brain and psychological science in the fields of science and technology. In solving this task, 1. convenience, 2. practicality, 3. verifying in terms of sustainability, and writing it useful for psychologists to grasp children's psychology. So that users can easily use them in accordance with the modern society.; 展开▼