In the past 25 years, Japan's direct foreign investment (DFI) expanded
dramatically. The purpose of this paper is to examine whether this ex
pansion has been consistent with assertions that Japan's DFI has been
of the pro-trade-oriented (PROT) type. On the one hand, there was a la
rge shift of Japan's DFI toward the advanced economies in the 1980s th
at was generally not of the PROT type but rather of the anti-trade ori
ented (ANT) type. On the other, Japan's investments in East Asian econ
omies also expanded and was generally of the PROT type. This expansion
of the Japanese investment frontier, bath in country-and industry-wis
e dimensions, contributed much to the host economies. However, the pat
terns of DFI in East Asia have also shown a tendency to converge. This
paper uses a dynamic model of PROT-type DFI to explain and interpret
these phenomena.