The document discusses different types of group members through examples that apply concepts from social psychology. It addresses five types: 1) The Ms. Know-It-All who displays confirmation bias, only considering information that confirms their beliefs. 2) Members with high versus low self-efficacy, those who see challenges versus avoid difficulties. 3) The hot girl subject to the halo effect of judging attractiveness influencing personality perceptions. 4) Mr. Aggressive exhibiting verbal or physical aggression. 5) Those looking on the bright versus dark side through counterfactual thinking about changing past outcomes to improve or worsen mood. The concepts discussed are confirmation bias, self-efficacy, the halo effect, aggression, and counterfactual thinking.