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The Spring-Summer 2019 issue of the IMF Research Perspectives explores how technology deals with old questions. Articles discuss the ways technological progress and the increased availability of data have helped in some areas, while presenting new challenges for analyzing various matters. The issue also includes an interview with Gita Gopinath, the new director of the IMF Research Department.
Mr. Sanjeev Gupta and Yongzheng Yang

/trade liberalization and productivity growth helps shed some light on the impact of African RTAs on export competitiveness. Based on firm-level panel data from three African economies (Ghana, Kenya, and Ethiopia), Mengistae and Pattillo (2004) find that exporting manufacturers have a total factor productivity premium of 11–28 percent. Jonsson and Subramanian (2000) find that trade liberalization has contributed significantly to growth through higher productivity in South Africa. To the extent that RTAs have not been effective in promoting overall African exports, it is unlikely

Mr. Michal Hulej, Mr. Charalambos G Tsangarides, and Mr. Pierre Ewenczyk

-currency union endogeneity. Persson (2001) uses a similar logit regression to find pairs of countries with a similar propensity to adopt a common currency but only one pair actually sharing the same currency. This matching procedure is then used in his nonparametric estimation of the gravity model. 8 See Frankel and Rose (1998) and Frankel and Rose (1997) for a discussion of the endogeneity of optimum currency areas criteria. 9 Carrere (2004) provides an assessment of the trade impact of African regional agreements. 10 See, among others, Collier (1995

Yongzheng Yang and Mr. Sanjeev Gupta

relationship between African exports/trade liberalization and productivity growth helps shed some light on the impact of African RTAs on export competitiveness. Based on firm-level panel data from three African economies (Ghana, Kenya, and Ethiopia), Mengistae and Pattillo (2004) find that exporting manufacturers have a total factor productivity premium of 11-28 percent. Jonsson and Subramanian (2000) find that trade liberalization has contributed significantly to growth through higher productivity in South Africa. To the extent that RTAs have not been effective in