A new theory of interaction within small groups posits that group members initiate actions when tension mounts between the affective meanings of their situational identities and impressions produced by recent events. Actors choose partners and behaviors so as to reduce the tensions. A computer model based on this theory, incorporating reciprocal…

Communities are foundational to the field of Community Psychology yet they are difficult to define and measure. Once viewed as social groups with ties to geographical locations, online communities interact free of physical or face-to-face contact. This cyberexistence makes the study of communities more challenging. Social networking sites (SNS),…

Decades of studies show that children's behavior is shaped by relationships in the "social ecology" of family, peers, school, and community. But in recent decades the prevailing scientific dogma was that genes determine destiny. Now it is clear that experience changes genes. For better or worse, environmental experiences including nutrition,…

The Ku Klux Klan (KKK), characterized by disguises, secrecy, bigotry, and terror, came into power in the South after the Civil War. In some parts of the country the KKK, an extreme example of pathological group process, appears as strong and violent today as ever. Fromm (1941) noted that the basis of group psychology is the individual personality…