Which of the following is NOT an effective strategy during group brainstorming?

Judging each idea as good or bad during group brainstorming stifles creativity and can discourage participants from sharing their thoughts. The primary goal of brainstorming is to generate as many ideas as possible without immediate criticism or evaluation. This approach supports an open and inclusive environment where individuals feel free to express their creativity, leading to innovative solutions.

In contrast, building upon ideas, encouraging wild ideas, and using sketches to illustrate ideas are all strategies that enhance idea generation. Building upon ideas allows participants to expand on others’ thoughts, fostering collaboration. Wild ideas can lead to unconventional solutions, while sketches help visualize concepts and make them more tangible for the group. Therefore, the practice of evaluating ideas as they are presented detracts from the essence of brainstorming, which thrives on the free flow of creativity.