Journal publications

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Is there evidence of a wage penalty to female part-time employment in South Africa?

Dorrit Posel and Colette Muller

In this paper, we investigate female part-time employment in South Africa. Using household survey data for South Africa from 1995 to 2004, we show that women are over-represented in part-time employment, and that the growth in part-time work has been an important feature of the feminisation of the...

Oct 2007
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Half empty, half full and why we can agree to disagree forever

Alexander Zimper

Aumann (1976) derives his famous we cannot agree to disagree result under the assumption of rational Bayesian learning. Motivated by psychological evidence against this assumption, we develop formal models of optimistically, resp. pessimistically, biased Bayesian learning within the framework of...

Oct 2007
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Economics, realism and reality: a comparison of Mäki and Lawson

Duncan Hodge

There is presently considerable debate about the application and interpretation of realism in economics. Interest in this area of the philosophy and methodology of economics has intensified over the last twenty years, especially due to the substantial contributions by Uskali Mäki and Tony Lawson...

Sep 2007
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Exchange Rates and Product Variety

Witness Simbanegavi

We study the role of exchange rate variability in the firm's choice of whether to o¤er one or two varieties. We show that variability induces the firm to vertically segment markets (offer two varieties). This happens because variability in the exchange rate a¤ects income dispersion and hence the...

Sep 2007
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Labor supply responses to large social transfers: Longitudinal evidence from South Africa

Cally Ardington, Anne Case and Victoria Hosegood

The South African old-age social pension has been much studied by both researchers and policy makers, in part for the larger lessons that might be learned about behavioral responses to cash transfers in developing countries. In this paper, we quantify the labor supply responses of prime-aged...

Sep 2007
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Publication

Robust Estimates of Okun's Coefficient for South Africa:

J. Geldenhuys and M. Marinkov

Persistently high unemployment in South Africa, especially in the face of improved economic conditions since 1994, begs the question: Does unemployment in South Africa respond to changes in output? When considering the linkages between output and unemployment, it is useful to decompose unemployment...

Aug 2007
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Competition and Productivity Growth in South Africa

Philippe Aghion, Matias Braun, and Johannes Fedderke

Using three different panel data sets, we show: (i) that mark-ups are significantly higher in South African manufacturing industries than they are in corresponding industries worldwide; (ii) that competition policy (i.e a reduction of mark-ups) should have largely positive effects on productivity...

Aug 2007
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Synchronization between South Africa and the U.S.: A Structural Dynamic Factor Analysis

Alain Kabundi

This paper studies the synchronization of economic variables between South Africa and the US. In addition it examines transmission channels through which supply and demand shocks from the US effect economic activity in South Africa. We use a structural dynamic factor model approach, instead of the...

Jul 2007
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Security and Potential Level Preferences with Thresholds

Ulrich Schmidt & Alexander Zimper

The security level models of Gilboa (1988) and of Jaffray (1988) as well as the security and potential level model of Cohen (1992) and Essid (1997) successfully accommodate classical Allais paradoxes while they offer an interesting explanation for their occurrence. However, experimental data...

Mar 2007
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Can local communities in Zimbabwe be trusted with wildlife management?: Evidence from contingent valuation of elephants

Edwin Muchapondwa, Fredrik Carlsson and Gunmar Köhlin

If local communities living adjacent to the elephant see it as a burden, then they cannot be trusted to be its stewards. To assess their valuation of it, a CVM study was conducted for one CAMPFIRE district in Zimbabwe. Respondents were classified according to their preferences over the elephant...

Dec 2006
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