Jean Piaget ; translated by Margaret Cook

edited by Elisabeth Ullmann and Werner Hilweg ; translated by Mary Heaney Margreiter and Kira Henschel

Paul Mussen

Paul H. Mussen

Henri Wallon

by W.N. Kellogg and L.A. Kellogg

by the yearbook committee and associated contributors ; edited by Harold W. Stevenson with the assistance of Jerome Kagan and Charles Spiker ; editors for the society, Nelson B. Henry and Herman G.Richey

by D.G. Boyle

P.G. Richmond

David P. Ausubel, Edmund V. Sullivan, S. William Ives

edited by Lester D. Crow and Alice Crow

William Preyer

Margaret Donaldson ; in collaboration with Donald Withrington ; with an appendix by John Duthie

Lois Barclay Murphy and collaborators

[by] Henry W. Maier

Janice T. Gibson

edited by Irving E. Sigel, Frank H. Hooper ; with foreword by Bärbel Inhelder

Paul Henry Mussen, John Janeway Conger, Jerome Kagan

by Jean Piaget and Bärbel Inhelder ; translated from the French by F.J. Langdon & J.L. Lunzer

Roger Barker, Tamara Dembo, Kurt Lewin

Arthur T. Jersild

by Jean Piaget ; [translated by C. Gattegno and F.M. Hodgson]

edited by Leonard Carmichael

by Helga Eng ; [translated by H. Stafford Hatfield]