Simplify the following text for a Grade 6 native English-speaking person.
Original: After a brief period lecturing at the Ã cole Normale , he took up a position at the UniversitÃ Lille Nord de France , where from 1953 to 1954 he taught psychology .
Simplified: In the early 1950s , he taught at the Ã cole Normale . Then he began teaching psychology at the University of Lille .