Verbal Brainstorming The team share their ideas verbally and discuss them and reach a conclusion at the end of the discussion without a systematic organisation of ideas. This is the first type that was introduced by Osborn back in 1957, Nominal Group Brainstorming In addition to the discussion in the verbal brainstorming, this type is a progression as it provides a method to vote and evaluate the discussed ideas to reach a final decision. Online Brainstorming This type can overcome the barriers to physical meetings. It allows them to meet virtually, share, discuss, and evaluate ideas.