This Selected Issues paper on Papua New Guinea reports that although economic cycles have generally paralleled the many mineral sector booms and busts, the downward trend in growth rates may reflect other factors. Papua New Guinea’s economy is dominated by a large labor-intensive agricultural sector and a capital-intensive oil and minerals sector. The formal sector consists of enclave extractive industries, cash crop production, and a small, import-substituting manufacturing sector. The importance of the agriculture sector is about the same as at independence, reflecting structural impediments that have deterred more rapid growth.
The standard growth accounting framework, which weights various inputs by their factor shares to measure their contributions to output growth, is known to underestimate the contribution of inputs in the presence of externalities and increasing returns. This paper develops a model in which, in the absence of such departures from the standard neoclassical framework, growth can occur through either embodied technological progress or firms replication of existing technology. The standard growth accounting framework fails to distinguish between these contrasting development processes. This failure thus reveals another limitation to the use of growth accounting in identifying the processes of economic developments.
This Selected Issues paper underlies the financial sector developments in Niger. The paper presents an overview of the financial sector of Niger and discusses the recent banking developments. It analyzes the recent trends in key microfinance indicators, and investigates reasons behind Niger’s relatively weak growth performance. It uses a growth accounting framework to assess the contribution to growth by factor inputs and total factor productivity (TFP) during 1963–2003. The paper also presents neoclassical growth model estimates of the role of macroeconomic variables and other factors in determining economic growth in Niger.