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dc.contributor.authorZhang, Dawei
dc.contributor.authorCheng, Zhuo (June)
dc.contributor.authorMohammad, Hasan A. Qurban H.
dc.contributor.authorNault, Barrie R.
dc.date.accessioned2020-01-24T16:16:01Z
dc.date.available2020-01-24T16:16:01Z
dc.date.issued2014-12-26
dc.identifier.citationZhang, D., Cheng, Z., Mohammad, H. A. Q. H., & Nault, B. R. (2014). Information technology substitution revisited. "Information Systems Research", manuscript no. ISR-2-13-252-R3. 1-30.en_US
dc.identifier.urihttp://hdl.handle.net/1880/111549
dc.description.abstractTaking advantage of the opportunities created by the price adjusted performance improvement in IT depends in part on the ability of IT capital to substitute for other inputs in production. Studies in the IS literature as well as most economics training that examine substitution of IT capital for other inputs use the Allen elasticity of substitution (AES). We present a less-well-known measure for the elasticity of substitution, the Morishima Elasticity of Substitution (MES). In contrast to the AES which is misleading when there are three or more inputs – such as non-IT capital, labor and IT capital – the MES provides a substitution measure where the scale is meaningful, and the measure differs depending upon which price is changing. This is particularly important for IT capital as prices have been declining and there is evidence that IT capital can substitute for non-IT capital or labor in a qualitatively different way than non-IT capital and labor substitute for each other. Methodologically we also show the impact of imposing local regularity – for example, monotonicity of output from increases in inputs – that we do through Bayesian methods employed to estimate the underlying functions that are used to calculate various measures of substitution. We demonstrate the importance of the MES as an under-recognized measure of substitution and the impact of imposing local regularity using an economy-wide industry-level dataset covering 1998-2009 at the three-digit NAICS level. Our MES results show that reductions in the price of IT capital increase the quantity of IT capital in use but are unlikely to change the input share of IT capital – the value of IT capital as a proportion of the value of all inputs, in contrast to major studies using the AES. In addition, estimates for both elasticities of substitution are more stable after imposing local regularity. Both of these advances – that is, the MES and imposing local regularity – have potential to impact future work on IT productivity, IT pricing, IT cost estimation and any type of analysis that posits the substitution of IT capital for non-IT capital or labor.en_US
dc.language.isoengen_US
dc.rightsUnless otherwise indicated, this material is protected by copyright and has been made available with authorization from the copyright owner. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.en_US
dc.subjectinformation systemsen_US
dc.subjectIT policy and managementen_US
dc.subjecteconomics of ISen_US
dc.subjectIT susbstitutionen_US
dc.subjectproduction functionen_US
dc.titleInformation technology substitution revisiteden_US
dc.typejournal articleen_US
dc.typeacceptedVersionen_US
dc.typejournal articleen_US
dc.typeacceptedVersionen_US
dc.publisher.facultyHaskayne School of Businessen_US
dc.publisher.institutionUniversity of Calgaryen_US
ucalgary.item.requestcopytrueen_US


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Unless otherwise indicated, this material is protected by copyright and has been made available with authorization from the copyright owner. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.