Collective behavior in the context of "Trend"

A complex adaptive system (CAS) is a system that is complex in that it is a dynamic network of interactions, but the behavior of the ensemble may not be predictable according to the behavior of the components. It is adaptive in that the individual and collective behavior mutate and self-organize corresponding to the change-initiating micro-event or collection of events. It is a "complex macroscopic collection" of relatively "similar and partially connected micro-structures" formed in order to adapt to the changing environment and increase their survivability as a macro-structure. The Complex Adaptive Systems approach builds on replicator dynamics.

The study of complex adaptive systems, a subset of nonlinear dynamical systems, is an interdisciplinary matter that attempts to blend insights from the natural and social sciences to develop system-level models and insights that allow for heterogeneous agents, phase transition, and emergent behavior.

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.