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Category. v. t. e. Punctuated gradualism is a microevolutionary hypothesis that refers to a species that has "relative stasis over a considerable part of its total duration [and] underwent periodic, relatively rapid, morphologic change that did not lead to lineage branching". It is one of the three common models of evolution.
Charles Edward Lindblom (March 21, 1917 – January 30, 2018) was an American academic who studied economics [2] at the University of Chicago and was Sterling Professor emeritus of political science and economics at Yale University. He served as president of the American Political Science Association and the Association for Comparative Economic ...
Gradualism, from the Latin gradus ("step"), is a hypothesis, a theory or a tenet assuming that change comes about gradually or that variation is gradual in nature and happens over time as opposed to in large steps. [1] Uniformitarianism, incrementalism, and reformism are similar concepts.
The Extended Evolutionary Synthesis (EES) consists of a set of theoretical concepts argued to be more comprehensive than the earlier modern synthesis of evolutionary biology that took place between 1918 and 1942. The extended evolutionary synthesis was called for in the 1950s by C. H. Waddington, argued for on the basis of punctuated ...
v. t. e. In evolutionary biology, punctuated equilibrium (also called punctuated equilibria) is a theory that proposes that once a species appears in the fossil record, the population will become stable, showing little evolutionary change for most of its geological history. [1] This state of little or no morphological change is called stasis.
Critical juncture theory seeks to explain both (1) the historical origin and maintenance of social order, and (2) the occurrence of social change through sudden, big leaps. [3] Critical juncture theory is not a general theory of social order and change. [4] It emphasizes one kind of cause (involving a big, discontinuous change) and kind of ...
Creeping normality (also called gradualism, or landscape amnesia[1]) is a process by which a major change can be accepted as normal and acceptable if it happens gradually through small, often unnoticeable, increments of change. The change could otherwise be regarded as remarkable and objectionable if it took hold suddenly or in a short time span.
Each behavioural change theory or model focuses on different factors in attempting to explain behaviour change. Of the many that exist, the most prevalent are learning theories, social cognitive theory, theories of reasoned action and planned behaviour, transtheoretical model of behavior change, the health action process approach, and the BJ ...