The distinctive feature of a triad was the atomic mass of the middle element. When elements were arranged in order of their increasing atomic mass, the atomic mass of the middle element was approximately the arithmetic mean of the other two elements of the triad.

Group Size and Member Interaction A marriage is an example of a dyad. Simmel further said that a triad, a group of three people, was much more stable because conflicts between two of its members could be mediated by the third person.

Triad refers to a group of three people in sociology. It is one of the simplest human groups that can be studied and is mostly looked at by microsociology. The study of triads and dyads was pioneered by German sociologist Georg Simmel at the end of the nineteenth century.

Triads: If you add another person to a dyad, it becomes a triad. A triad is a social group that consists of three people. Quads: A quad is a four-person social group, where these 4 people discuss their perceptions and attitudes towards a particular topic with a trained moderator.

By extension a group of 4 can be. A quartet, foursome, or double date if referring to people and what they are doing. A tetrad, a quadruple, a quad-, quart- if discussing geometry or construction or things that occur in fours or partitioned into four.

Distinguishing traits While sociopaths qualify as narcissists, not all narcissists are sociopaths. What drives them differs. But the main distinction is that sociopaths are more cunning and manipulative, because their ego isn’t always at stake. In fact, they don’t have any real personality.

Narcissistic personality disorder involves a pattern of self-centered, arrogant thinking and behavior, a lack of empathy and consideration for other people, and an excessive need for admiration. Others often describe people with NPD as cocky, manipulative, selfish, patronizing, and demanding.