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Looking for the rationale of the instability principle in Harrod’s Essay in dynamic theory : who is adjusting what?

Abstract : Instability of the warranted growth path, an important property for business cycle theory, is central to Harrod’s Essay. It is persuasively presented as the consequence of moving from statics (where stability is viewed as the normal case) to dynamics. How exactly? The paper suggests two reasons. The first lies in attributing to demanders (firms as investors) rather than to suppliers (firms as producers) the main response to market imbalances. The second results from the insidious introduction of an extrapolative component of expectations in Harrod’s dynamic approach, replacing levels by trends and confining them to a single point in time.
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https://hal.univ-lorraine.fr/hal-03208051
Contributor : Touria Bagard <>
Submitted on : Monday, April 26, 2021 - 11:53:45 AM
Last modification on : Tuesday, September 7, 2021 - 3:44:18 PM

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Rodolphe dos Santos Ferreira. Looking for the rationale of the instability principle in Harrod’s Essay in dynamic theory : who is adjusting what?. European Journal of the History of Economic Thought, Taylor & Francis (Routledge), 2020, 27 (4), pp.549-563. ⟨10.1080/09672567.2020.1768424⟩. ⟨hal-03208051⟩

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