Edward de Bono developed the Six Thinking Hats method for structured thinking and discussion. The method identifies six distinct perspectives or "thinking modes" represented by colored hats: white for information, yellow for optimism, black for caution, red for feelings, green for creativity, and blue for process management. Using the hats helps groups think together more effectively by separating logical perspectives from emotional ones. Many large companies have adopted the technique to improve decision making, problem solving, innovation and teamwork.