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This paper estimates private sector credit cycles for most of the oil-importing and oil-exporting countries in the Middle East and North Africa. Credit cycles are the medium-term component in spectral analysis of real private sector credit growth. In addition, the paper estimates the credit cycles for several Western countries and Japan. The analysis finds substantial differences and rare similarities between credit cycles in the Middle East and North Africa and developed countries. Over 1964-2017, credit cycles in the Middle East and North Africa do not appear to be associated with real gross domestic product growth. They only explain a fraction of the growth in private sector credit, and they do not seem to be synchronized across oil exporters and oil importers.

The paper uses a detailed household survey to document precautionary wealth accumulation in Afghanistan, with wealth being significantly higher for households facing higher income uncertainty. Annual household expenditure on nondurable goods is also lower for these households. There is no significant difference in the wealth response to income uncertainty across high- and low-conflict provinces. However, the constituents of precautionary wealth vary drastically. While households in the low-conflict regions rely almost exclusively on livestock to iron out uncertainty, households in the high-conflict areas also build up a reserve of gold and silver. This shift in household portfolio suggests a more substantial decline in real returns of livestock relative to jewelry in high-conflict provinces.

This thesis includes three empirical chapters. The chapters analyze different elements that affect the lending behavior of banks, particularly during the crisis period. The recent global financial crisis highlighted the central role of financial intermediaries? stability in assuring a smooth transmission of credit to borrowers. In this thesis, I show that factors, such as the structure of the banks? balance sheet and the country level particularities such as banking sector concentration significantly affect the banks? lending behavior and lending channel.