Answer: Forming friendship on others behaviors
Explanation:
According to the theory of Damon , forming friendship on the base of others behavior is the friendship technique of children which is done by sharing toys and playful attractive stuff , who have similar nature ,etc.This type of friendship is usually non-stable and ends in short period of time
According to the situation mentioned in question, Jeremy is having friend based on other behavior. He is making friend if he finds someone with similar behavior as him or someone who shares toys with him.Therefore , behavior of other children is the reason for building friendship in Jeremy's case.