Find out how good you are at lateral thinking. Improve your skills--and even raise your I.Q.-- by taking on these puzzles specially chosen for this collection. They will help you master the four keys to lateral thinking: testing assumptions, asking the right new questions, trying new ways to solve, using logic to test the new solutions. 96 pages, 20 b/w illus., 5 3/8 x 8 1/4. Read Less