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Testing the Convergence Hypothesis: A Comment [PDF]

Review of Economics and Statistics, 1997
In a recent paper Lichtenberg (1994) proposes a test of the convergence hypothesis that the variance of productivity across countries decreases over time. He argues that the ratio of the variance in the first period to that in the last period of the time series is F-distributed bur overlooks the dependency between these two variances. As a consequence,
Martin Carree, Luuk Klomp
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Primary Headaches: A Convergence Hypothesis

Headache: The Journal of Head and Face Pain, 2002
After reviewing the historic differentiation between migraine and tension‐type headache, the authors note that the similarities between these two types of primary headaches outweigh the differences, and so hypothesize that these headaches share a common pathophysiology.
Roger, Cady, Curtis, Schreiber, Kathleen, Farmer, Fred, Sheftell   +3 more
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The Convergence Hypothesis

Headache: The Journal of Head and Face Pain, 2007
The Convergence Hypothesis postulates a single pathophysiological mechanism to explain the clinical spectrum of primary headaches seen in patients with migraine. The history and the scientific underpinnings of the Convergence Hypothesis are presented.
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Testing the convergence hypothesis: a new approach

Economics Letters, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bairam, Erkin I., McRae, Shaun D.
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Testing the Convergence Hypothesis

The Review of Economics and Statistics, 1994
The authors show that, contrary to the beliefs of some previous analysts of international economic growth, the hypotheses of convergence and of mean-reversion are not equivalent. Under some assumptions, the rate of convergence is independent of the degree of mean-reversion; under other assumptions, mean-reversion is a necessary, but not a sufficient ...
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The Convergence-Divergence Hypothesis

World Futures, 2002
I propose a hypothesis, called the systems convergence-divergence hypothesis, which attempts to explain how the existence and evolution of supraindividual systems (social, political or economic) might be predicted from an analysis of the basic structures that make up their individual entities (molecules and cells) and how, reciprocally, study of these ...
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