Six Thinking Hats by Edward de Bono is a technique that allows to systematically take up different positions toward a problem and by that act out various approaches. Each „hat“ symbolizes a certain attitude:
White hat: pure facts about the situation
Red hat: your feelings about the experience
Black hat: critique
Yellow hat: right and constructive aspects
Green: creative thinking
Blue hat: summary - the learning gained and the conclusions reached
The hats can be put on arbitrarily and thereby alter the particular way of thinking. Thus many more ideas are generated by way of adopting different positions. The method can be deployed by only one person or within a group.