As a young boy Fritz Haarmann was extremely unusual because he did not like to play ordinary games that young boys played. Instead he liked to play with his sisters doll collection. His brothers thought this was weird so he was excluded or uninvited to do anything with them. Fritz never developed any social skills due to this. Doctors concluded that Fritz choose to prey on young boys because one he is homosexual and two he didn't enjoy his childhood in the least bit so he didn't want any other young boys to enjoy their childhood. Doctors do believe that the seizures he had might have caused him to commit these dreadful acts but their is not enough evidence or information to prove this theory.