psychological differentiation in a sentence

Examples

1. She worked as a researcher at what was then called the Downstate Medical Center of the State University of New York in Brooklyn, and was co-author of three books : " Anxiety in Pregnancy and Childbirth " ( Hoeber, 1950 ); " Psychological Differentiation " ( Wiley, 1962 ); and " Left Handed " ( Columbia University Press, 1980 ).