Institution: | 1.University of Pittsburgh, Pittsburgh, PA, USA ;2.St. Petersburg State University, St. Petersburg, Russian Federation ;3.Baby Home 13, St. Petersburg, Russian Federation ;4.University of Pittsburgh Office of Child Development, 400 North Lexington Avenue, Pittsburgh, PA, 15208-2561, USA ;6.University of Michigan, Ann Arbor, USA ;7.Teachers College, Columbia University, New York, USA ;8.University of Pittsburgh, Pittsburgh, USA ; |