 In these places, he sought employment as a librarian and used the opportunity to inform himself reading books about psychology, human behavior, psychoanalysis, and human brain structure.In New York, where he married his first wife Elizabeth Altman, he became a graduate student in psychology in the laboratory of Hans-Lukas Teuber, earning a PhD.,in 1959 from New York University.That degree launched his scientific career, first as a postdoctoral fellow at Columbia University, next at the Massachusetts Institute of Technology, and finally at Purdue University.