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Information and communication technology (ICT) is a crucial driver of economic growth. This has made ICT R&D vital to sustaining ICT as an engine of global growth. Although the US still performs the most ICT R&D globally, competition has intensified as US ICT R&D investment as a percentage of GDP has fallen noticeably - and has been surpassed by competitors - in the past decade.
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Ezell et al. (2010) studied this question.
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