What I think often happens in a culture where group brainstorming is common is that the few meeting specialist, often the gregarious managers, is the ones leadi

What I think often happens in a culture where group brainstorming is common is that the few meeting specialist, often the gregarious managers, is the ones leading the meetings and is in the end labeled as the creative ones. In the end people will start to expect that these people will make the suggestions and the others will just give feedback.