Who first distinguished between primary groups and secondary groups?

Question

Quizplus · Accepted Answer

Charles Horton Cooley first distinguished between primary groups and secondary groups.
Key Takeaway: Charles Horton Cooley was an American sociologist who is best known for his concept of the looking glass self. Cooley argued that there are three stages in how we form our identity, which, collectively, he referred to as the "looking-glass self." In this theory, Cooley stated that humans always imagine how they are perceived by other humans, we actively observe how others react to us to see if we are perceived the same way we imagine ourselves, and we construct an identity based upon the reactions and judgments of others, essentially from the "looking glass" of others in society.

Who First Distinguished Between Primary Groups and Secondary Groups