"Ken Gilhooly has been highly influential in the study of thinking, from his early research on concept learning and hypothesis testing right up to his recent work on creativity and insight problem solving. His research has been driven by a consistent underpinning theme, which is to understand people’s thinking strategies and the ways in which they are adapted to the constraints of working memory. This book conveys many important findings relating to this theme that have had a major impact in defining the current theoretical landscape." - Linden J. Ball, Department of Psychology, University of Central Lancashire, UK"Kenneth Gilhooly has made a substantial contribution to the field of thinking and reasoning throughout his distinguished career, and this book gathers together many of his most fascinating and significant works. The breadth of theoretical and applied problems addressed by his research is truly impressive. This collection is essential reading for anyone interested in what helps or hinders how we think and reason about the world." – David Pearson, Department of Psychology, Anglia Ruskin University, Cambridge, UK"Kenneth Gilhooly’s erudition, his first-hand experience of the development of modern cognitive psychology following the ‘cognitive revolution’, and his extensive research contributions on topics relating to thinking, including problem solving, working memory, expertise, the effects of aging on cognition, insight, incubation and creative cognition, make this collection of his papers an important read." – Paul Sowden, School of Psychology, University of Surrey, UK