Collective behavior in the context of "Complex adaptive system"

A fad, trend, or craze is any form of collective behavior that develops within a culture, a generation, or social group in which a group of people enthusiastically follow an impulse for a short time period.

Fads are products or behaviors that achieve short-lived popularity but fade away. Fads are often seen as sudden, quick-spreading, and short-lived events. Fads include diets, clothing, hairstyles, toys, and more. Some fads in the last hundred years include toys such as yo-yos, and hula hoops, and fad dances such as the Macarena, floss and the twist.

Mobilization is an academic journal that publishes original research and academic reviews of books concerned mainly with sociological research on protests, social movements, and collective behavior.

The journal was established in 1996 by Hank Johnston (San Diego State University). Johnston edited the journal for eleven years, after which he was succeeded by Daniel J. Myers (University of Notre Dame) and then Rory McVeigh (University of Notre Dame). During Johnston's run as editor, the journal moved first from two to three issues per year and, starting with volume eleven, eventually became a quarterly journal. The current editor-in-chief is Neal Caren (University of North Carolina at Chapel Hill).

The sociology of death (sometimes known as sociology of death, dying and bereavement or death sociology) explores and examines the relationships between society and death.

These relationships can include religious, cultural, philosophical, family, to behavioural insights among many others. It widens our understanding of death as more than clinical death, but a process combining social elements from the immediate needs of deathcare to wider social beliefes. Involving multiple disciplines, the sociology of deathcare can be seen as an interdisciplinary field of study across sociology and its sub-fields.

Behavioral contagion is a form of social contagion involving the spread of behavior through a group. It refers to the propensity for a person to copy a certain behavior of others who are either in the vicinity, or whom they have been exposed to. The term was originally used by Gustave Le Bon in his 1895 work The Crowd: A Study of the Popular Mind to explain undesirable aspects of behavior of people in crowds. In the digital age, behavioral contagion is also concerned with the spread of online behavior and information. A variety of behavioral contagion mechanisms were incorporated in models of collective human behavior.

Behavioral contagion has been attributed to a variety of different factors. Often it is distinguished from collective behavior that arises from a direct attempt at social influence. A prominent theory involves the reduction of restraints, put forth by Fritz Redl in 1949 and analyzed in depth by Ladd Wheeler in 1966. Social psychologists acknowledge a number of other factors, which influence the likelihood of behavioral contagion occurring, such as deindividuation (Festinger, Pepitone, & Newcomb, 1952) and the emergence of social norms (Turner, 1964). In 1980, Freedman et al. have focused on the effects of physical factors on contagion, in particular, density and number.