sentences:  In 1951, as national attention turned to issues of desegregation in schools, ultimately leading up to Brown v. Board of Education, Robert Carter and Thurgood Marshall, from the NAACP Legal Defense and Educational Fund, solicited expert opinions from social science.A range of social scientists, from Kenneth Clark to Floyd and Gordon Allport, weighed in on the psychological effects of desegregation, and conditions under which interracial contact might attenuate racial prejudice, including an amicus curiae brief filed in the Brown v. Board case.Other studies have claimed that contact hypothesis is a very simple and optimistic and that contact would most likely gravitate toward hostility rather than friendship if two competitive parties were involved.