Describe a situation in which you have witnessed a person playing one of the self-centered roles in a group (central negative, compliment seeker, monopolizer, self-confessor, etc.). How did the person communicate? What were the effects? Now describe a situation in which you have witnessed a person playing one of the unproductive (blocker, social loafer, aggressor, etc.) roles in a group. How did the person communicate? What were the effects?