In three periods of its modern economic history (1913-37, 1952-73, and
1973-90), Japan grew up to twice as rapidly as did other major indust
rialized countries. The paper investigates whether growth in these yea
rs was export-led. The results of five very different tests suggest th
at domestic forces rather than foreign demand propelled longer-run gro
wth. This was particularly so in the high-growth period of 1952-73. Ex
ports may, however, have been crucial in initiating several cyclical u
pswings.