Complex sentence: George Armitage Miller (February 3,1920--July 22,2012) was one of the founders of cognitive psychology, also making seminal contributions to psycholinguistics and cognitive science in general.
Split into simpler sentences: George Armitage Miller (February 3,1920--July 22,2012) was one of the founders of cognitive psychology. He also made seminal contributions to psycholinguistics and cognitive science in general.