punctuated equilibria

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punctuated equilibria

(evolution)
In the fossil record, long periods of little change in lineages interspersed with brief periods of relatively rapid change.
References in periodicals archive ?
The way the organizational change occurred, from the perspective of the evolutionary theory of Nelson and Winter (1982), led to the conclusion that it adhered to the Punctuated Equilibrium model proposed by Tushman and Rommaneli (1985).
There are three clear behaviors (states); the first is where the value of the slope for the case with homogeneous saving stays almost constant up to [lambda] = 0.60, and then there is a decrease in the value of slopes in a sustained way up to [lambda] = 0.81, where its value is close to the value obtained with the Epstein model, which indicates that the energy and the dynamics of the punctuated equilibrium are recovered.
Survey section three (corrective actions) was designed in part to measure whether, as predicted by punctuated equilibrium theory, respondents thought it more effective to apply radical (aka "revolutionary") measures to turn around "runaway" projects than to apply more moderate (aka "incremental") ones (Gersick, 1991).
Although the book's repeated forced references to the presence or absence of a punctuated equilibrium can be annoying, they do not fundamentally alter the usefulness of the six case-study chapters.
The observation of stasis in the fossil record and the theory of punctuated equilibrium were the main focus of the deliberations.
Baucus and Human (1994) examine process in terms of incremental changes and punctuated equilibrium. We describe the process in terms of retirement/return to work and then types of self-employment.
Gould and Eldredge's theory of punctuated equilibrium is utterly incompatible with Darwin's understanding of natural selection.
According to the theory of Punctuated Equilibrium, extinctions from all causes happen from time to time in response to environmental events and biological changes.
She referred to her model as "Punctuated Equilibrium," based on a similar scientific model proposed by professor Stephen J.
The "Punctuated Equilibrium Model" first proposed by Steven Jay Gould and Niles Eldridge in 1972 offers an alternative model for viewing this industry plus the challenges and the rate of change it currently faces.
then demonstrates how application of Whitehead's naturalism can overcome these difficulties, providing a rationale for, and an understanding of, the emergence of higher-level actualities and the theory of punctuated equilibrium. Even the apparent fine-tuning of the physical universe is susceptible to G.'s process argument, which notes that at a moment approaching absolute chaos (such as the Big Bang), persuasive divine power could have coercive-like effects.
The punctuated equilibrium model of Baumgartner and Jones, in which bursts of policy change interrupt periods of policy stability through shifts in issue definitions or images and changes in policy venues, is another approach reviewed by Mintrom.