Myers and Bishop (1970) conducted studies where groups of relatively prejudiced and unprejudiced high school students had discussions on issues involving racial attitudes.
According to these studies, which of the following is true of the attitudes of students before and after these discussions?

a) Both groups were more prejudiced.
b) Both groups were less prejudiced.
c) The individuals who were relatively unprejudiced became even less prejudiced and the individuals who were relatively prejudiced became even more prejudiced.
d) The individuals who were relatively unprejudiced became more prejudiced and the individuals who were relatively prejudiced became less prejudiced.