[Relationship among child, protector and operator at the training-room. The peculiar character of external behavior].

: We have studied the external behaviors of the child, protector and operator at the dental care room from the aspects of the child's characteristic features and operator's characteristic features and the protector's degrees of anxiety. The courses from that the child and protector had entered the training-room with the operator till the child began to brush his teeth in the room were divided into four steps, so their external behaviors were investigated at each step. The conclusions were: 1. When compared the protector who had entered the dental care room with the child and had not entered, the former's degrees of anxiety were higher than the latter. 2. The child who had entered the dental care room with the protector had more negative behaviors than the child had entered by himself. 3. The children classified as the 'dependent, standard and independent type' by the characteristic features had equal rates of that their protectors had entered the dental care room. And they had the degrees of negative behavior equally. The protector's degrees of prompt were most in the children classified as the independent type. 4. When the protector had not entered the dental care room, the operator's degrees of prompt during the transfer from the waiting room to the training-room were more than the other steps. 5. When the protector had entered the dental care room, on the operator classified as the standard type by the characteristic features the degrees of prompt during the transfer from the waiting room to the training-room and in the room were more than the other steps. On the other side the operator classified as the stable type had more prompt in the entrance.