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  2. Exogenous and endogenous variables - Wikipedia

    en.wikipedia.org/wiki/Exogenous_and_endogenous...

    In an economic model, an exogenous variable is one whose measure is determined outside the model and is imposed on the model, and an exogenous change is a change in an exogenous variable. [1]: p. 8 [2]: p. 202 [3]: p. 8 In contrast, an endogenous variable is a variable whose measure is determined by the model. An endogenous change is a change ...

  3. Endogeneity (econometrics) - Wikipedia

    en.wikipedia.org/wiki/Endogeneity_(econometrics)

    In this instance it would be correct to say that infestation is exogenous within the period, but endogenous over time. Let the model be y = f ( x , z ) + u . If the variable x is sequential exogenous for parameter α {\displaystyle \alpha } , and y does not cause x in the Granger sense , then the variable x is strongly/strictly exogenous for ...

  4. Exogeny - Wikipedia

    en.wikipedia.org/wiki/Exogeny

    An exogenous contrast agent, in medical imaging for example, is a liquid injected into the patient intravenously that enhances visibility of a pathology, such as a tumor.An exogenous factor is any material that is present and active in an individual organism or living cell but that originated outside that organism, as opposed to an endogenous factor.

  5. Endogenous money - Wikipedia

    en.wikipedia.org/wiki/Endogenous_money

    Endogenous money is a heterodox economic theory with several strands, mostly associated with the post-Keynesian school, as well as some sectors of the Austrian school. Multiple theory branches developed separately and are to some extent compatible (emphasizing different aspects of money), while remaining united in opposition to the New ...

  6. Endogenous risk - Wikipedia

    en.wikipedia.org/wiki/Endogenous_risk

    Endogenous risk, as opposed to exogenous risk, is a type of financial risk that is created by the interaction of market participants internal to the financial system. It was proposed by Jon Danielsson and Hyun-Song Shin in 2002.

  7. Seed dormancy - Wikipedia

    en.wikipedia.org/wiki/Seed_dormancy

    True dormancy or inherent (or innate) dormancy is caused by conditions within the seed that prevent germination even if the conditions are favorable. [7] Imposed dormancy is caused by the external conditions that remain unsuitable for germination [8] Seed dormancy can be divided into two major categories based on what part of the seed produces dormancy: exogenous and endogenous. [9]

  8. Endogenous growth theory - Wikipedia

    en.wikipedia.org/wiki/Endogenous_growth_theory

    An endogenous growth theory implication is that policies that embrace openness, competition, change and innovation will promote growth. [ citation needed ] Conversely, policies that have the effect of restricting or slowing change by protecting or favouring particular existing industries or firms are likely, over time, to slow growth to the ...

  9. Endogeny (biology) - Wikipedia

    en.wikipedia.org/wiki/Endogeny_(biology)

    For example, endogenous substances, and endogenous processes are those that originate within a living system (e.g. an organism or a cell). For instance, estradiol is an endogenous estrogen hormone produced within the body, whereas ethinylestradiol is an exogenous synthetic estrogen, commonly used in birth control pills.