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Individual and collective security are among the gauges of civilization, and at the same time they constitute necessary conditions for its progress. Their systematic pursuit is relatively recent among nations: prompted by the dreadful lessons of the 20th century, they took their present shape...

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We show that, contrary to a widely spread error, when the savings and the population growth rates are constant, an unstable equilibrium cannot exist in a neoclassical model, because it would imply an increasing average productivity of capital and therefore a negative marginal productivity of...

In this paper we test the hypothesis advanced by Weiss (1995) that under sorting models the return to schooling across identical twins would decline over time compared to the return for the population as a whole. The analyses undertaken on a relatively large sample of Australian twins are...

Survey of literature on PPP up to July 2000. Includes a geogetric analysis of PPP theory, issues related to deviations from parity and an examination of empirical evidence on PPP.

Using an immigrant assimilation framework, this paper develops a model of the occupational mobility of immigrants and tests the hypotheses using data on adult males from the Longitudinal Survey of Immigrants to Australia. The theoretical model generates hypotheses regarding a U-shaped pattern of...