Why are people swayed by a dominant personality?Research has shown that in a group setting, the dominant personality in the group will be more likely to speak first. According to the research, 94% of the problems are solved with the dominant personality's answer because this was the first answer that the group received.
When designing with other people make sure that the first idea is not the final solution just because it was the first idea spoken.
Before a group meeting, have each member of the group jot down any ideas they may have and pass those ideas along with one another so that each possible solution can be heard.