Which of the following is NOT a step to run a brainstorming session effectively?

Encouraging criticism among participants is not an effective step for running a brainstorming session. The purpose of brainstorming is to foster a free-flowing exchange of ideas without judgment. When participants feel criticized or pressured to defend their thoughts, it can stifle creativity and discourage open expression.

In contrast, clearly defining the problem ensures that all participants are aligned in their thinking and working toward the same goal. Establishing criteria for selecting feasible ideas helps in evaluating and refining the brainstormed options after the session, guiding the group toward practical solutions. Additionally, conducting a warm-up session is beneficial to get the creative juices flowing and to make participants feel more comfortable sharing ideas. Focusing on positive contributions and open-mindedness is key to a successful brainstorming session.