Ich habs schon immer gewusst: Brainstorming bringt nix. Im Gegenteil, wenn die Leute alleine nachdenken, gibt es nicht nur mehr neue Ideen, sondern auch noch bessere:
Aus dem Buch Imagine: How Creativity Works von Jonah Lehrer:
There’s just one problem with brainstorming: it doesn’t work. Keith Sawyer, a psychologist at Washington University, summarizes the science: “Decades of research have consistently shown that brainstorming groups think of far fewer ideas than the same number of people who work alone and later pool their ideas.” In fact, the very first empirical test of Osborn’s technique, which was performed at Yale in 1958, soundly refuted the premise. The experiment was simple: Forty-eight male undergraduates were divided into twelve groups and given a series of creative puzzles. The groups were instructed to carefully follow Osborn’s brainstorming guidelines. As a control sample, forty-eight students working by themselves were each given the same puzzles. The results were a sobering refutation of brainstorming. Not only did the solo students come up with twice as many solutions as the brainstorming groups but their solutions were deemed more “feasible” and “effective” by a panel of judges. In other words, brainstorming didn’t unleash the potential of the group. Instead, the technique suppressed it, making each individual less creative.
Und das gleiche gilt für die Anforderung, dass man während eines Brainstorming keine Ideen bewerten oder gar ablehnen soll. Auch total falsch:
Which teams did the best? The results weren’t even close: while the brainstorming groups slightly outperformed the groups given no instructions, people in the debate condition were far more creative. On average, they generated nearly 25 percent more ideas. The most telling part of the study, however, came after the groups had been disbanded. That’s when researchers asked each of the subjects if he or she had any more ideas about traffic that had been triggered by the earlier conversation. While people in the minimal and brainstorming conditions produced, on average, two additional ideas, those in the debate condition produced more than seven. Nemeth summarizes her results “While the instruction ‘Do not criticize’ is often cited as the [most] important instruction in this appears to be a counterproductive strategy. Our findings show that debate and criticism do not inhibit ideas but, rather, stimulate them relative to every other condition.”
Höchste Zeit mit dem Mist aufzuhören. Das beste scheint wohl zu sein, wenn sich alle Beteiligten getrennt vorbereiten und versuchen viele gute Ideen zu generieren und sich anschliessend zu einer Diskussionsrunde, bei der die Ideen auch bewertet werden, zusammenzusetzen.