NBER Working Papers by Zhi Wang

This paper provides both a conceptual framework for decomposing a country’s gross exports into value-added components by source and a new bilateral database on value-added trade. Our parsimonious framework integrates all previous measures of vertical specialization and value-added trade in the literature. To illustrate the potential of the decomposition, we present a number of applications including re-computing revealed comparative advantages and constructing an index to describe whether a country-sector is likely in the upstream or downstream of global production chains.

While openness to trade is a well-recognized hallmark of many successful emerging market economies known as “growth miracles,” another component of the growth model is a leapfrogging strategy – the use of policies to guide the industrial structural transformation ahead of a country's factor endowment. Does the leapfrogging strategy work? Opinions vary but the evidence is scarce in part because it is more difficult to measure the degree of leapfrogging than the extent of trade openness. We undertake a systematic look at the evidence across countries to assess the efficacy of such a strategy. So far, there is no strong and robust evidence that this strategy works reliably. Future research can explore a number of refinements.

The rise of China in world trade has brought both benefits and anxiety to other economies. For many policy questions, it is crucial to know the extent of domestic value added (DVA) in exports, but the computation is more complicated when processing trade is pervasive. We propose a method for computing domestic and foreign contents that allows for processing trade. By our estimation, the share of domestic content in exports by the PRC was about 50% before China’s WTO membership, and has risen to over 60% since then. There are also interesting variations across sectors. Those sectors that are likely labeled as relatively sophisticated such as electronic devices have particularly low domestic content (about 30% or less).

Chinese exports have become increasingly sophisticated. This has generated anxiety in developed countries as competitive pressure may increasingly be felt outside labor-intensive industries. Using product-level data on exports from different cities within China, this paper investigates the contributing factors to China's rising export sophistication. Somewhat surprisingly, neither processing trade nor foreign invested firms are found to play an important role in generating the increased overlap between China’s export structure and that of high-income countries. Instead, improvement in human capital and government policies in the form of tax-favored high-tech zones appear to be the key to the country's evolving export structure. On the other hand, processing trade, foreign invested firms, a...