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IT and Economic Performance: Evidence From Micro Studies

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CHAPTER V: IT AND ECONOMIC PERFORMANCE: EVIDENCE FROM MICRO DATA STUDIES By B.K. Atrostic and Ron Jarmin* Micro data—that is, data on individual businesses that underlie key economic indicators—allow us to go behind published statistics and ask how IT affects businesses’ economic performance. Years ago, analyses indicated a positive relationship between IT and productivity, even when official aggregate statistics still pointed towards a “productivity paradox.” Now, such analyses shed light on how varied that relationship is across businesses, and how IT makes its impacts. This chapter focuses on research about businesses based on micro data collected by the U.S. Census Bureau. We highlight the kinds of questions about the use and …show more content…

Comparing findings from research studies using different data sets allows us to see which estimates appear to be robust, and which ones seem to depend on the specific data we use, and on the specific equations we estimate. RESEARCH REQUIRES GOOD MICRO DATA Micro data research takes advantage of the high-quality information about individual businesses that underlies major economic indicators. The micro data sets typically are large and nationally representative, making it more likely that they capture the tremendous diversity among businesses.2 Researchers often are able to link data at the micro level across surveys and over time. For example, consider the new information on whether businesses have computer networks, and how they use those networks that was collected in the Computer Network Use Supplement (CNUS) to the 1999 Annual Survey of Manufactures (ASM).3 The plant-level micro data about computer networks collected in the CNUS can be linked to information about employment, shipments, use of other inputs, etc., collected about the same plants in the 1999 ASM and to ASMs for other years, and to data that was collected about the same plants in the 1997 Economic Census. Such exact linkages yield much richer information bases than any single supplement, survey, or census alone. When micro data can be linked, researchers also can use econometric techniques to control for unobserved characteristics that are

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