What is the main basis of friendship, not just during middle childhood but at all ages?

Question

Quizplus · Accepted Answer

Research has consistently shown that similarity is a key factor in the formation and maintenance of friendships at all ages. People tend to be friends with those who share common interests, attitudes, values, and backgrounds. While frequency of interaction, social economic status, and proximity may also contribute to the development of friendships, they are not as reliable or consistent as similarity.

What Is the Main Basis of Friendship, Not Just During