The articles which make up this book were all expressly written to honor a remarkable man and a remarkable psychologist, Joseph McVicker Hunt, on the occasion of his 70th birthday. The contributors to this volume, with the exception of Hunt's teacher, J. P. Guilford, are students and colleagues of Hunt's whose intellectual and professional paths have crossed his in some significant way. In terms of content, the contributions collectively range across many of the conventional boundaries that demarcate the territories into which psy chological subject-matter has been divided. In so doing, they remain faithful to the man they honor, for whom such boundaries have had, at best, only provisional reality. Yet as the introductory chapter attempts to make clear, there is a unifying theme that lies behind the apparent diversity of Hunt's work. While we wished to mark Hunt's specific contributions to the diverse areas represented in this book, we also hoped to capture the unity of viewpoint that ties them together.