When different branches of science examine a common topic, they usually put their emphasis on different aspects of the subject and go about their task from diverse perspectives and with different methodologies. True interdisciplinary work, then, is not easy, but it can be very rewarding. In the realm of human cognition, the biography of Manfred Wettler, Professor of Cognitive Psychology at the University of Paderborn, to whom this book is dedicated on the occasion of his 65th birthday, stands out as a model of such interdisciplinarity. Written by his friends, colleagues, and former students, the contributions mirror his work and represent current perspectives on cognition from the disciplines of psychology, linguistics, and information science.