Economic Crises, Stabilisation Policy and Output in Emerging Market Economies

The recent macroeconomic history of emerging market economies is coloured with economic crises of all kinds, ranging from debt-crises, through hyperinflationary periods to currency crises to name but a few. Much of the empirical literature notes that alongside fast-paced structural change this has resulted in volatile business cycles and a difficult environment for stabilisation policy. Both short- and long-run output dynamics are shaped by the multidimensional exposure of EMEs to economic shocks. The paper uses an SVAR analysis and finds that in spite of high degrees of output volatility, the conduct of stabilisation policy has sometimes been successful in dampening short-run output fluctuations. However, even when stabilisation has been successful, the effect on overall output volatility has been negligible when compared to supply-side shocks. The results show that economic crises are associated with large negative supply shocks which are only counteracted by stabilisation policy to a very small extent. These crisis-related supply shocks, in turn, have large negative effects on potential GDP growth, which are only reversible when positive supply shocks regain lost ground. Given the institutional origin of the economic crises, the paper suggests that for stabilisation policy to become more effective in lowering output volatility and maintaining long-term growth potential, it must be supported by appropriate supply-side measures which insulate EMEs against large negative supply shocks and help them to recover in the wake of economic crises.Economic crises, Stabilisation policy, Emerging Market Economies, Business Cycles, Potential output

Optimal HP filtering for South Africa

Among the various methods used to identify the business cycle from aggregate data, the Hodrick-Prescott filter has become an industry standard – it ‘identifies’ the business cycle by removing low-frequency information, thereby smoothing the data. Since the filter’s inception in 1980, the value of the smoothing constant for quarterly data has been set at a ‘default’ of 1600, following the suggestion of Hodrick and Prescott (1980). This paper argues that this ‘default value’ is inappropriate due to its ad hoc nature and problematic underlying assumptions. Instead this paper uses the method of optimal filtering, developed by Pedersen (1998, 2001, and 2002), to determine the optimal value of the smoothing constant for South Africa. The optimal smoothing constant is that value which least distorts the frequency information of the time series. The result depends on both the censoring rule for the duration of the business cycles and the structure of the economy. The paper raises a number of important issues concerning the practical use of the HP filter, and provides an easily replicable method in the form of MATLAB code.Hodrick-Prescott filter, Spectral analysis, Ideal filtering, Optimal filtering, Distortionary filtering, Business cycles, MATLAB

Personal influence in information-seeking behaviour of art students

Abstract: This article investigated personal influence in the information-seeking behaviour of art students. A qualitative approach was followed, and the data were collected by means of interviews with 11 art students of The Open Window School of Visual Communication, located in Pretoria, South Africa. The Open Window offers degrees and postgraduate honours degrees in Visual Communication. The key findings revealed that the personal dimension in information-seeking behaviour has a significant influence on art students’ information needs and is prevalent in their personal interests and preferences and their motivation to seek information. The findings provided insight into how the art students’ information-seeking behaviour might influence the library as an information service