punctuated equilibrium


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punctuated equilibrium

the theory that evolutionary change has occurred during short periods of rapid change punctuated by periods of stability Such a process would be characterized by the absence of an infinite range of intermediate forms, and supporters of the theory point to the vertebrate fossil record as evidence.
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We argue that this result is consistent with that predicted by punctuated equilibrium theory (the argument is presented as an informal theorem in Table 7).
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.
He places it at the center of his own "one long argument," with a 150-page discussion of why species should be considered individual agents of selection and then a 280-page treatise on how punctuated equilibrium supports a new view of hierarchical selection and macroevolution.
If punctuated equilibrium does indeed explain coal markets, then it is likely that the seeds of yet another market paradigm are even now being sown, that today is the beginning of another yet-to-be-determined market unhealthiness, and that sudden and drastic market craziness might again be in the future.
Proposition 3a1: Constrained entrepreneurs will follow a punctuated equilibrium path from career employment to self-employment.
For instance, Hawkes dredges up an old creationist misconception that Gould and Eldredge's theory of punctuated equilibrium is somehow radically disconnected from "Darwinian evolution" when it is, in fact, nothing more than an extension of the Darwinian concept of allopatric speciation
According to the theory of Punctuated Equilibrium, extinctions from all causes happen from time to time in response to environmental events and biological changes.
Past applications of punctuated equilibrium theory in the strategic management literature have focused not only on change at the organizational level (Romanelli & Tushman, 1994; Gersick, 1991; Miller, 1982; Miller & Friesen, 1980; Gresov et al.
Drew Wollin, in `Punctuated Equilibrium: Reconciling Theory of Revolutionary and Incremental Change', combines the punctuated equilibrium model with Simon's concept of nested hierarchies.
These organisms rearranged the orientation of their exons until, in the fullness of time, they got it right; and a horse, for instance, would suddenly appear - thus explaining punctuated equilibrium in the fossil record.
I begin this phase of the discussion by noting that in essence, We the People proposes a punctuated equilibrium model of macrolevel constitutional order.
Whether the driving force is natural selection, punctuated equilibrium, catastrophism, some other mechanism or a combination of any or all of them is open to debate.