Conversation so far:
Was he married?
Coogan was married four times, and had four children.
what was Jackie Coogan early life like?
He began performing as an infant in both vaudeville and film, with an uncredited role in the 1917 film Skinner's Baby.
did the movie Skinner's Baby do well?
Motography wrote that while the film lacks the plot material of the earlier releases, it contains enough of human interest to 'get by' easily with most audiences.“
what was Jackie Coogan's next film after Skinner's Baby?
A Day's Pleasure
did Jackie Coogan do anything other than films?
Coogan enlisted in the U.S. Army in March 1941.
did Jackie Coogan act all through early childhood?
Yes, Coogan was also one of the first stars to be heavily merchandised.
did Jackie Coogan go to college?
He attended several colleges, as well as the University of Southern California.

Question: What did he study?
Self-contained rewrite: What did Jackie Coogan study?