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Abstract. In this paper we find that the estimates of Armington elasticities (the elasticity of substitution between groups of products identified by country of origin) obtained from multilateral trade data can differ from those obtained from bilateral trade data. In particular, the former tends to be higher than the latter when trade consists largely of intermediate inputs. Given that the variety of intermediate inputs traded across borders is increasing rapidly and that the effect of this increase is not adequately captured in multilateral trade data, the evidence shows that the employment of multilateral trade data to estimate Armington elasticities needs caution. JEL classification: F14, C51

With global supply chains, any value added or production task can be traded as part of goods. This means that competitiveness can be measured either in terms of?tasks? (Bems and Johnson, 2012), or goods, but with goods prices reflecting the cost of tasks embedded in those goods. We show that when measuring competitiveness in goods, the formula used in computing the real effective exchange rates at the IMF (Bayoumi, Lee, and Jayanthi, 2005) needs to be expressed in terms of the price of value added and needs an additional term, which captures a gain or loss in competitiveness of goods due to o

We examine the role of household financial access in determining the extent of risksharing in Nigeria using household-level panel data. We estimate changes in the response of consumption to shocks for households with formal and informal access to finance and those without, both for the country as a whole and for different regions. Our findings suggest that households with financial access who experience an unexpected negative income shock see consumption fall by 15 percentage points less than those without access. This result is mainly driven by households with informal financial access, and by household savings rather than borrowing. Regional variation in risk sharing tends to be significant, suggesting that financial inclusion efforts going forward should have a more regional focus. --Abstract