This paper is concerned with the effects of export instability on inve
stment and growth. It is shown that past cross-sectional empirical stu
dies on the effects of export instability (either in prices or in valu
e terms) used an incorrect measure of instability that does not proper
ly take account of the share of exports in GDP. Using a new instabilit
y index and a broad set of conditioning variables, it is shown that ex
port instability was positively associated with investment but negativ
ely associated with growth in a large sample of countries during the p
eriod from the early 1970s to the mid 1980s. Copyright (C) 1996 Elsevi
er Science Ltd