∗ The project referred to in this paper was funded jointly by the Norwegian Ministry of Education and the Norwegian Research Council, Division for Social Science.
† A version of this paper was presented at the Annual Conference of the American Educational Research Association in Chicago, Illinois, 3–7 April 1991.
Notes
∗ The project referred to in this paper was funded jointly by the Norwegian Ministry of Education and the Norwegian Research Council, Division for Social Science.
† A version of this paper was presented at the Annual Conference of the American Educational Research Association in Chicago, Illinois, 3–7 April 1991.