Five decades after starting his Ph.D. in mathematical sociology at the University of Bristol in 1970, Nick Axten received his Doctorate in front of his wife Claire and 11-year-old granddaughter Freya. He started in 1970, when he received a Fulbright scholarship at the University of Pittsburgh, but returned to the UK after five years with the dissertation unfinished. He restarted the process at Bristol seven years ago. “Some problems are so great it takes the best part of a lifetime to get your head around them,” said Dr. Axten. It’s a new theory for understanding human behavior based on the values each person holds which could change our view of behavioral psychology.