scholarly journals The J-Curve Hypothesis And Currency Devaluation: Cases Of Egypt And Ghana

2011 ◽  
Vol 12 (2) ◽  
pp. 1 ◽  
Author(s):  
Kishore G. Kulkarni
Keyword(s):  
Exchange Rates ◽  
Empirical Evidence ◽  
Conventional Theory ◽  
Currency Devaluation ◽  
J Curve ◽  
Balance Of Trade

<span>The paper reviews effects of devaluation on balance of trade by using Marshall Lerner condition, J-Curve hypothesis. It extends the hypothesis further to consider a case of continuous devaluations of exchange rates. After initially contributing to conventional theory of J-Curve hypothesis, and the paper then tests the theory for cases of Ghana and Egypt. In both cases it is found that theoretical arguments are consistent with empirical evidence. Paper consists of four sections including introduction.</span>

Expectations and chaotic dynamics: Empirical evidence on exchange rates

2008 ◽  
Vol 99 (1) ◽  
pp. 33-35 ◽  
Author(s):  
Marcelo Resende ◽  
Rodrigo M. Zeidan
Keyword(s):  
Exchange Rates ◽  
Empirical Evidence ◽  
Chaotic Dynamics

scholarly journals Pathogen evolution under host avoidance plasticity

2015 ◽  
Vol 282 (1814) ◽  
pp. 20151656 ◽  
Author(s):  
David V. McLeod ◽  
Troy Day
Keyword(s):  
Empirical Evidence ◽  
Host Resistance ◽  
Current Theory ◽  
Conventional Theory ◽  
Pathogen Evolution ◽  
Trade Offs ◽  
Host Pathogen ◽  
Pathogen Burden ◽  
External Stimuli ◽  
Plastic Responses

Host resistance consists of defences that limit pathogen burden, and can be classified as either adaptations targeting recovery from infection or those focused upon infection avoidance. Conventional theory treats avoidance as a fixed strategy which does not vary from one interaction to the next. However, there is increasing empirical evidence that many avoidance strategies are triggered by external stimuli, and thus should be treated as phenotypically plastic responses. Here, we consider the implications of avoidance plasticity for host–pathogen coevolution. We uncover a number of predictions challenging current theory. First, in the absence of pathogen trade-offs, plasticity can restrain pathogen evolution; moreover, the pathogen exploits conditions in which the host would otherwise invest less in resistance, causing resistance escalation. Second, when transmission trades off with pathogen-induced mortality, plasticity encourages avirulence, resulting in a superior fitness outcome for both host and pathogen. Third, plasticity ensures the sterilizing effect of pathogens has consequences for pathogen evolution. When pathogens castrate hosts, selection forces them to minimize mortality virulence; moreover, when transmission trades off with sterility alone, resistance plasticity is sufficient to prevent pathogens from evolving to fully castrate.

Book Reviews

2012 ◽  
Vol 50 (1) ◽  
pp. 187-191
Keyword(s):  
Exchange Rate ◽  
Exchange Rates ◽  
Empirical Evidence ◽  
Rational Expectations ◽  
University Of California ◽  
Exchange Rate Risk ◽  
Exchange Rate Dynamics ◽  
Rate Risk ◽  
Currency Trading

Richard K. Lyons of University of California, Berkeley reviews “Exchange-Rate Dynamics” by Martin D. D.Evans. The EconLit Abstract of the reviewed work begins: Explores recent research on the sources and consequences of exchangerate variations. Discusses macro models without frictions; macro models with frictions; empirical macro models; rational expectations models; sequential trade models; currency-trading models; currency-trading models--empirical evidence; identifying order flow; order flows and the macroeconomy; exchange rates, order flows, and macro data releases; and exchange-rate risk. Evans is Professor of Economics in the Department of Economics and Professor of Finance in the McDonough School of Business at Georgetown University. Index.

Antidumping Investigations and the Pass-Through of Antidumping Duties and Exchange Rates: Reply

2010 ◽  
Vol 100 (3) ◽  
pp. 1283-1284 ◽  
Author(s):  
Bruce A Blonigen ◽  
Stephen E Haynes
Keyword(s):  
Exchange Rate ◽  
Exchange Rates ◽  
Empirical Evidence ◽  
Structural Breaks ◽  
Theoretical Explanation ◽  
Antidumping Duties ◽  
Pass Through ◽  
Exchange Rate Pass Through ◽  
The U.S

This reply responds to a comment that correctly identifies an invalid assumption in our original article that antidumping (AD) duties are subtracted from the U.S. price when calculating AD duties in administrative reviews. While this point invalidates our theoretical explanation and empirical evidence on the magnitude of AD duty pass-through, it does not affect our original article's theory or empirical evidence on the magnitude of exchange rate pass-through, or the presence of structural breaks in both the AD duty and exchange-rate pass-through coefficients stemming from AD investigations and orders.

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