This book is a unique insight into expanding discipline area with important implications for design research, education and practice. This book traces the development of a research interest in articulating and understanding the idea that designers have and use 'designerly' ways of knowing and thinking. The following topics are covered: nature and nurture of design ability; creative cognition in design; natural intelligence of design; design discipline versus design science; and, expertise in design. As a timeline of scholarship and research and a resource for understanding how designers think and work, this book will interest researchers, teachers and students of industrial and product design; design practitioners, and design managers. 