Hayafors, Roger Learing of probabilistic inference tasks : the importance of situational variables for the subject-task interaction / Roger Hayafors - Uppsala : University of Uppsala, 1981 - iv, 39 p. ; 21 cm. - ACTA Universitatis Upsaliensis, 23 . Doctoral thesis at Uppsala University 1981 ISBN: 915541138X n.p. ISSN: 03466426 Subjects--Topical Terms: Education Dewey Class. No.: 370 / H 323