Name the technique to study interpersonal relationship among the children.

Sociometry is the scientific technique used to study interpersonal relationships within a group, especially among children. Developed by J. L. Moreno, sociometry helps to: identify friendships study likes and dislikes examine group structure understand social acceptance or rejection A sociogram (option 4) is the graphical representation of sociometric results, but the technique itself is called sociometry. Hence, the correct technique is Sociometry.