This paper summarizes some of the literature on the links between FDI and t
he transfer and diffusion of technology. We argue that the positive effects
of FDI postulated in much of the recent debate are not automatic, that the
effects of FDI will vary depending on the host country's characteristics a
nd policies, and that there is a role for economic policy in maximizing the
potential benefits of FDI. Many developing countries have traditionally re
lied on a combination of various fiscal incentives and performance and tech
nology transfer requirements to attract foreign multinational firms and to
control their operations. However, these measures may not be sufficient to
generate significant knowledge spillovers if the majority of local firms em
ploy technologies that are very different from those used by foreigners. Th
e studies reviewed in the paper suggest two additional areas for host count
ry policy. Firstly, policies to support local technological capability and
labour skills may facilitate spillovers of technology from foreign MNCs. Th
e reason is not only that the local industry's ability to absorb foreign te
chnology improves, but also that a more skilled local labour force reduces
the costs of intra-firm technology transfer within the MNC, which is likely
to encourage affiliates to import, 'more' technology from their parents. S
econdly, policies to ensure that the foreign affiliates operate in a compet
itive environment appear to be essential. Foreign MNCs that are protected b
y trade or entry barriers can afford to employ obsolete technologies and st
ill generate significant profits, without generating much diffusion of valu
able knowledge and skills to local firms. Foreign MNCs facing national or i
nternational competition, by contrast, must continuously adjust their opera
tions and technologies to changing market conditions, which creates a great
er potential for spillovers to local industry.