Invented in the 1920s by Dr. C.C. Crawford, the Crawford slip method involves collating input from people on slips of paper. It is a variant of brainstorming. It is used when you want to get ideas from a large group of people, when you do not have time or ability to discuss ideas, and just want to collect people's thoughts, and when you want to engage an audience, giving them a sense of involvement. Writing rather than speaking during the group brainstorming allows individuals’ thoughts to flow freely on to paper without interruption, and it can also level the playing field between quieter and more outspoken participants, allowing people to contribute equally. Off-line, you can explore and collate the answers, for example grouping them into similar categories and using these to trigger further thoughts.
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