The volume editorsfor this 55th volume of the Nebraska Symposiumon Motivation are Rick Bevins and Tony Caggiula. The volume editors coordinated the sym- sium that lead to this volume including selecting and inviting the contributors and coordinating all aspects of editing. My thanks go to the Rick and Tony and to our contributors for excellent presentations and chapters. This Symposium series is supported by funds provided by the Chancellor of the University of Nebraska-Lincoln, Harvey Perlman, and by funds given in memory of Professor Harry K. Wolfe to the University of Nebraska Foundation by the late ProfessorCoraL.Friedline.We areextremelygratefulfortheChancellor'sgenerous support to the Symposium series and for the University of Nebraska Foundation's support via the Friedline bequest. This symposium volume, like those in the recent past, is dedicated to the memoryof Professor Wolfe, who broughtpsychologyto the University of Nebraska. After studying with Professor Wilhelm Wundt, Professor Wolfe returned to his native state, to establish the ?rst undergraduate laboratory in psychology in the nation. As a student at Nebraska, Professor Friedline studied psychology under Professor Wolfe.