IDEAS home Printed from https://ideas.repec.org/a/eee/juecon/v119y2020ics0094119020300474.html
   My bibliography  Save this article

Cities and the structure of social interactions: Evidence from mobile phone data

Author

Listed:
  • Büchel, Konstantin
  • Ehrlich, Maximilian v.

Abstract

The impact of telecommunication technologies on the role of cities depends on whether these technologies and face-to-face interactions are substitutes or complements. We analyze anonymized mobile phone data to examine how distance and population density affect calling behavior. Exploiting an exogenous change in travel times as well as permanent relocations of individuals, we find that distance is highly detrimental to link formation. Mobile phone usage significantly increases with population density even when spatial sorting is accounted for. This effect is most pronounced for local interactions between individuals in the same catchment area. This indicates that face-to-face interactions and mobile phone calls are complementary to each other, so that mobile phone technology may even increase the dividends of density.

Suggested Citation

  • Büchel, Konstantin & Ehrlich, Maximilian v., 2020. "Cities and the structure of social interactions: Evidence from mobile phone data," Journal of Urban Economics, Elsevier, vol. 119(C).
    • Handle: RePEc:eee:juecon:v:119:y:2020:i:c:s0094119020300474
    DOI: 10.1016/j.jue.2020.103276
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0094119020300474
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.jue.2020.103276?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to look for a different version below or search for a different version of it.

    Other versions of this item:

    References listed on IDEAS

    as
    1. Charlot, Sylvie & Duranton, Gilles, 2004. "Communication externalities in cities," Journal of Urban Economics, Elsevier, vol. 56(3), pages 581-613, November.
    2. Donald R. Davis & Jonathan I. Dingel, 2019. "A Spatial Knowledge Economy," American Economic Review, American Economic Association, vol. 109(1), pages 153-170, January.
    3. Combes, Pierre-Philippe & Gobillon, Laurent, 2015. "The Empirics of Agglomeration Economies," Handbook of Regional and Urban Economics, in: Gilles Duranton & J. V. Henderson & William C. Strange (ed.), Handbook of Regional and Urban Economics, edition 1, volume 5, chapter 0, pages 247-348, Elsevier.
    4. Alberto Alesina & Eliana La Ferrara, 2000. "Participation in Heterogeneous Communities," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 115(3), pages 847-904.
    5. Attila Ambrus & Markus Mobius & Adam Szeidl, 2014. "Consumption Risk-Sharing in Social Networks," American Economic Review, American Economic Association, vol. 104(1), pages 149-182, January.
    6. Yannis M. Ioannides & Henry G. Overman & Esteban Rossi-Hansberg & Kurt Schmidheiny, 2008. "The effect of information and communication technologies on urban structure [‘Trade and circuses: Explaining urban giants’]," Economic Policy, CEPR, CESifo, Sciences Po;CES;MSH, vol. 23(54), pages 202-242.
    7. Brueckner, Jan K. & Largey, Ann G., 2008. "Social interaction and urban sprawl," Journal of Urban Economics, Elsevier, vol. 64(1), pages 18-34, July.
    8. Pierre-Philippe Combes & Gilles Duranton & Laurent Gobillon & Sébastien Roux, 2010. "Estimating Agglomeration Economies with History, Geology, and Worker Effects," NBER Chapters, in: Agglomeration Economics, pages 15-66, National Bureau of Economic Research, Inc.
    9. Michael Bailey & Rachel Cao & Theresa Kuchler & Johannes Stroebel & Arlene Wong, 2018. "Social Connectedness: Measurement, Determinants, and Effects," Journal of Economic Perspectives, American Economic Association, vol. 32(3), pages 259-280, Summer.
    10. Bailey, Michael & Farrell, Patrick & Kuchler, Theresa & Stroebel, Johannes, 2020. "Social connectedness in urban areas," Journal of Urban Economics, Elsevier, vol. 118(C).
    11. Glaeser, Edward L., 1999. "Learning in Cities," Journal of Urban Economics, Elsevier, vol. 46(2), pages 254-277, September.
    12. Joshua D. Angrist & Jörn-Steffen Pischke, 2009. "Mostly Harmless Econometrics: An Empiricist's Companion," Economics Books, Princeton University Press, edition 1, number 8769.
    13. Glaeser, Edward L & Hedi D. Kallal & Jose A. Scheinkman & Andrei Shleifer, 1992. "Growth in Cities," Journal of Political Economy, University of Chicago Press, vol. 100(6), pages 1126-1152, December.
      • Edward L. Glaeser & Hedi D. Kallal & Jose A. Scheinkman & Andrei Shleifer, 1991. "Growth in Cities," NBER Working Papers 3787, National Bureau of Economic Research, Inc.
      • Glaeser, Edward Ludwig & Kallal, Hedi D. & Scheinkman, Jose A. & Shleifer, Andrei, 1992. "Growth in Cities," Scholarly Articles 3451309, Harvard University Department of Economics.
    14. Mark Granovetter, 2005. "The Impact of Social Structure on Economic Outcomes," Journal of Economic Perspectives, American Economic Association, vol. 19(1), pages 33-50, Winter.
    15. Hilber, Christian A.L., 2010. "New housing supply and the dilution of social capital," Journal of Urban Economics, Elsevier, vol. 67(3), pages 419-437, May.
    16. Daniel Shoag & Stan Veuger, 2018. "Shops and the City: Evidence on Local Externalities and Local Government Policy from Big-Box Bankruptcies," The Review of Economics and Statistics, MIT Press, vol. 100(3), pages 440-453, July.
    17. Berliant, Marcus & Reed III, Robert R. & Wang, Ping, 2006. "Knowledge exchange, matching, and agglomeration," Journal of Urban Economics, Elsevier, vol. 60(1), pages 69-95, July.
    18. Dean Karlan & Markus M. Möbius & Tanya S. Rosenblat & Adam Szeidl & Hunt Allcott, 2007. "Community Size and Network Closure," American Economic Review, American Economic Association, vol. 97(2), pages 80-85, May.
    19. Ciccone, Antonio & Hall, Robert E, 1996. "Productivity and the Density of Economic Activity," American Economic Review, American Economic Association, vol. 86(1), pages 54-70, March.
    20. Combes, Pierre-Philippe & Duranton, Gilles & Gobillon, Laurent, 2008. "Spatial wage disparities: Sorting matters!," Journal of Urban Economics, Elsevier, vol. 63(2), pages 723-742, March.
    21. Panle Jia Barwick & Yanyan Liu & Eleonora Patacchini & Qi Wu, 2019. "Information, Mobile Communication, and Referral Effects," NBER Working Papers 25873, National Bureau of Economic Research, Inc.
    22. Ströbel, Johannes & Bailey, Michael & Cao, Ruiqing & Kuchler, Theresa & Wong, Arlene, 2017. "Measuring Social Connectedness," CEPR Discussion Papers 12146, C.E.P.R. Discussion Papers.
    23. David Marmaros & Bruce Sacerdote, 2006. "How Do Friendships Form?," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 121(1), pages 79-119.
    24. Robert Jensen, 2007. "The Digital Provide: Information (Technology), Market Performance, and Welfare in the South Indian Fisheries Sector," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 122(3), pages 879-924.
    25. Marco Manacorda & Andrea Tesei, 2020. "Liberation Technology: Mobile Phones and Political Mobilization in Africa," Econometrica, Econometric Society, vol. 88(2), pages 533-567, March.
    26. Duranton, Gilles & Puga, Diego, 2004. "Micro-foundations of urban agglomeration economies," Handbook of Regional and Urban Economics, in: J. V. Henderson & J. F. Thisse (ed.), Handbook of Regional and Urban Economics, edition 1, volume 4, chapter 48, pages 2063-2117, Elsevier.
    27. Abel, Jaison R. & Deitz, Richard, 2015. "Agglomeration and job matching among college graduates," Regional Science and Urban Economics, Elsevier, vol. 51(C), pages 14-24.
    28. Gaspar, Jess & Glaeser, Edward L., 1998. "Information Technology and the Future of Cities," Journal of Urban Economics, Elsevier, vol. 43(1), pages 136-156, January.
    29. D'Costa, Sabine & Overman, Henry G., 2014. "The urban wage growth premium: Sorting or learning?," Regional Science and Urban Economics, Elsevier, vol. 48(C), pages 168-179.
    30. David Miller & Nageeb Ali, 2008. "Cooperation and Collective Enforcement in Networked Societies," 2008 Meeting Papers 970, Society for Economic Dynamics.
    31. Helsley, Robert W. & Zenou, Yves, 2014. "Social networks and interactions in cities," Journal of Economic Theory, Elsevier, vol. 150(C), pages 426-466.
    32. Bryan S. Graham, 2015. "Methods of Identification in Social Networks," Annual Review of Economics, Annual Reviews, vol. 7(1), pages 465-485, August.
    33. Matthew O. Jackson & Brian W. Rogers & Yves Zenou, 2017. "The Economic Consequences of Social-Network Structure," Journal of Economic Literature, American Economic Association, vol. 55(1), pages 49-95, March.
    34. Jorge De La Roca & Diego Puga, 2017. "Learning by Working in Big Cities," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 84(1), pages 106-142.
    35. Manski, Charles F & Lerman, Steven R, 1977. "The Estimation of Choice Probabilities from Choice Based Samples," Econometrica, Econometric Society, vol. 45(8), pages 1977-1988, November.
    36. Matthew O. Jackson & Brian W. Rogers, 2007. "Meeting Strangers and Friends of Friends: How Random Are Social Networks?," American Economic Review, American Economic Association, vol. 97(3), pages 890-915, June.
    37. Albouy, David & Ehrlich, Gabriel, 2018. "Housing productivity and the social cost of land-use restrictions," Journal of Urban Economics, Elsevier, vol. 107(C), pages 101-120.
    38. Sato, Yasuhiro & Zenou, Yves, 2015. "How urbanization affect employment and social interactions," European Economic Review, Elsevier, vol. 75(C), pages 131-155.
    39. Sylvie Charlot & Gilles Duranton, 2006. "Cities and Workplace Communication: Some Quantitative French Evidence," Urban Studies, Urban Studies Journal Limited, vol. 43(8), pages 1365-1394, July.
    40. Matthew O. Jackson, 2014. "Networks in the Understanding of Economic Behaviors," Journal of Economic Perspectives, American Economic Association, vol. 28(4), pages 3-22, Fall.
    41. Sergio Currarini & Matthew O. Jackson & Paolo Pin, 2009. "An Economic Model of Friendship: Homophily, Minorities, and Segregation," Econometrica, Econometric Society, vol. 77(4), pages 1003-1045, July.
    42. Blumenstock, Joshua E. & Eagle, Nathan & Fafchamps, Marcel, 2016. "Airtime transfers and mobile communications: Evidence in the aftermath of natural disasters," Journal of Development Economics, Elsevier, vol. 120(C), pages 157-181.
    43. Mohammad Arzaghi & J. Vernon Henderson, 2008. "Networking off Madison Avenue," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 75(4), pages 1011-1038.
    44. Wagner, Alfred, 1891. "Marshall's Principles of Economics," History of Economic Thought Articles, McMaster University Archive for the History of Economic Thought, vol. 5, pages 319-338.
    45. Jonathan Guryan, 2004. "Desegregation and Black Dropout Rates," American Economic Review, American Economic Association, vol. 94(4), pages 919-943, September.
    46. Levy, Moshe & Goldenberg, Jacob, 2014. "The gravitational law of social interaction," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 393(C), pages 418-426.
    47. Lucas, Robert Jr., 1988. "On the mechanics of economic development," Journal of Monetary Economics, Elsevier, vol. 22(1), pages 3-42, July.
    48. Roback, Jennifer, 1982. "Wages, Rents, and the Quality of Life," Journal of Political Economy, University of Chicago Press, vol. 90(6), pages 1257-1278, December.
    49. Cosslett, Stephen R, 1981. "Maximum Likelihood Estimator for Choice-Based Samples," Econometrica, Econometric Society, vol. 49(5), pages 1289-1316, September.
    50. Blum, Bernardo S. & Goldfarb, Avi, 2006. "Does the internet defy the law of gravity?," Journal of International Economics, Elsevier, vol. 70(2), pages 384-405, December.
    51. Rosen, Harvey S., 1979. "Housing decisions and the U.S. income tax : An econometric analysis," Journal of Public Economics, Elsevier, vol. 11(1), pages 1-23, February.
    52. Gui,Benedetto & Sugden,Robert (ed.), 2005. "Economics and Social Interaction," Cambridge Books, Cambridge University Press, number 9780521848848, October.
    53. Gilles Duranton & J. V. Henderson & William C. Strange (ed.), 2015. "Handbook of Regional and Urban Economics," Handbook of Regional and Urban Economics, Elsevier, edition 1, volume 5, number 5.
    54. Lancaster, Tony, 2000. "The incidental parameter problem since 1948," Journal of Econometrics, Elsevier, vol. 95(2), pages 391-413, April.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Chloé Duvivier & Emma Cazou & Stéphanie Truchet‐Aznar & Cédric Brunelle & Jean Dubé, 2021. "When, where, and for what industries does broadband foster establishment births?," Papers in Regional Science, Wiley Blackwell, vol. 100(6), pages 1377-1401, December.
    2. Kuchler, Theresa & Russel, Dominic & Stroebel, Johannes, 2022. "JUE Insight: The geographic spread of COVID-19 correlates with the structure of social networks as measured by Facebook," Journal of Urban Economics, Elsevier, vol. 127(C).
    3. Jun Sung Kim & Eleonora Patacchini & Pierre M. Picard & Yves Zenou, 2023. "Spatial interactions," Quantitative Economics, Econometric Society, vol. 14(4), pages 1295-1335, November.
    4. Bailey, Michael & Farrell, Patrick & Kuchler, Theresa & Stroebel, Johannes, 2020. "Social connectedness in urban areas," Journal of Urban Economics, Elsevier, vol. 118(C).
    5. Augeraud Veron, E. & Marhuenda, F. & Picard, P.M., 2021. "Local social interaction and urban equilibria," Mathematical Social Sciences, Elsevier, vol. 112(C), pages 72-83.
    6. Binzhe Wang & Matias Williams & Fábio Duarte & Siqi Zheng, 2022. "Demand for social interactions: Evidence from the restaurant industry during the COVID‐19 pandemic," Journal of Regional Science, Wiley Blackwell, vol. 62(3), pages 830-857, June.
    7. Picard, Pierre M. & Zenou, Yves, 2018. "Urban spatial structure, employment and social ties," Journal of Urban Economics, Elsevier, vol. 104(C), pages 77-93.
    8. Pierre Magontier, Maximilian v. Ehrlich, Markus Schl pfer, 2022. "The Fragility of Urban Social Networks - Mobility as a City Glue -," Diskussionsschriften credresearchpaper38, Universitaet Bern, Departement Volkswirtschaft - CRED.
    9. Kim, Jun Sung & Patacchini, Eleonora & Picard, Pierre M. & Zenou, Yves, 2017. "Urban Interactions," Working Paper Series 1192, Research Institute of Industrial Economics.
    10. Gilles Duranton & Diego Puga, 2020. "The Economics of Urban Density," Journal of Economic Perspectives, American Economic Association, vol. 34(3), pages 3-26, Summer.
    11. Lai, Wangyang & Song, Hong & Wang, Chang & Wang, Huanhuan, 2021. "Air pollution and brain drain: Evidence from college graduates in China," China Economic Review, Elsevier, vol. 68(C).
    12. Comola, Margherita & Inguaggiato, Carla & Mendola, Mariapia, 2024. "Social networks and economic transformation: Evidence from a resettled village in Brazil," Journal of Economic Behavior & Organization, Elsevier, vol. 221(C), pages 17-34.
    13. Abraham, Samira S. & Lanzara, Gianandrea & Lazzaroni, Sara & Masella, Paolo & Squicciarini, Mara P., 2024. "Spatial and historical drivers of fake news diffusion: Evidence from anti-Muslim discrimination in India," Journal of Urban Economics, Elsevier, vol. 141(C).
    14. Stefano Guarino & Enrico Mastrostefano & Massimo Bernaschi & Alessandro Celestini & Marco Cianfriglia & Davide Torre & Lena Rebecca Zastrow, 2021. "Inferring Urban Social Networks from Publicly Available Data," Future Internet, MDPI, vol. 13(5), pages 1-45, April.
    15. Theresa Kuchler & Johannes Stroebel, 2022. "Social Interactions, Resilience, and Access to Economic Opportunity: A Research Agenda for the Field of Computational Social Science," CESifo Working Paper Series 9606, CESifo.
    16. Yusra Ghafoor & Yi-Shin Chen & Kuan-Ta Chen, 2019. "Social Interaction Scaling for Contact Networks," Sustainability, MDPI, vol. 11(9), pages 1-14, May.
    17. Feng Huang & Jie Gao, 2022. "Customer and Tax Avoidance: How Does Customer Geographic Proximity Affect a Supplier’s Tax Avoidance?," Sustainability, MDPI, vol. 14(22), pages 1-30, November.
    18. Wang, Li & Wu, Yiqi & Chen, Yaxin & Dai, Yunhao, 2023. "Distance produces the fear of loss: Customer geographic proximity and corporate cash holdings," International Review of Financial Analysis, Elsevier, vol. 87(C).
    19. Behzad Vahedi & Morteza Karimzadeh & Hamidreza Zoraghein, 2021. "Spatiotemporal prediction of COVID-19 cases using inter- and intra-county proxies of human interactions," Nature Communications, Nature, vol. 12(1), pages 1-15, December.
    20. Chloé Duvivier & Claire Bussière, 2022. "The contingent nature of broadband as an engine for business startups in rural areas," Journal of Regional Science, Wiley Blackwell, vol. 62(5), pages 1329-1357, November.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Combes, Pierre-Philippe & Gobillon, Laurent, 2015. "The Empirics of Agglomeration Economies," Handbook of Regional and Urban Economics, in: Gilles Duranton & J. V. Henderson & William C. Strange (ed.), Handbook of Regional and Urban Economics, edition 1, volume 5, chapter 0, pages 247-348, Elsevier.
    2. Stef Proost & Jacques-François Thisse, 2019. "What Can Be Learned from Spatial Economics?," Journal of Economic Literature, American Economic Association, vol. 57(3), pages 575-643, September.
    3. Zenou, Yves & Patacchini, Eleonora & picard, pierre & Kim, Jun Sung, 2017. "Urban Interactions," CEPR Discussion Papers 12432, C.E.P.R. Discussion Papers.
    4. Gilles Duranton & Diego Puga, 2020. "The Economics of Urban Density," Journal of Economic Perspectives, American Economic Association, vol. 34(3), pages 3-26, Summer.
    5. Zenou, Yves & picard, pierre & Patacchini, Eleonora, 2015. "Urban Social Structure, Social Capital and Spatial Proximity," CEPR Discussion Papers 10501, C.E.P.R. Discussion Papers.
    6. Duranton, Gilles & Puga, Diego, 2014. "The Growth of Cities," Handbook of Economic Growth, in: Philippe Aghion & Steven Durlauf (ed.), Handbook of Economic Growth, edition 1, volume 2, chapter 5, pages 781-853, Elsevier.
    7. Carlino, Gerald & Kerr, William R., 2015. "Agglomeration and Innovation," Handbook of Regional and Urban Economics, in: Gilles Duranton & J. V. Henderson & William C. Strange (ed.), Handbook of Regional and Urban Economics, edition 1, volume 5, chapter 0, pages 349-404, Elsevier.
    8. Picard, Pierre M. & Zenou, Yves, 2018. "Urban spatial structure, employment and social ties," Journal of Urban Economics, Elsevier, vol. 104(C), pages 77-93.
    9. Bailey, Michael & Farrell, Patrick & Kuchler, Theresa & Stroebel, Johannes, 2020. "Social connectedness in urban areas," Journal of Urban Economics, Elsevier, vol. 118(C).
    10. Cunningham, Chris & Patton, Michaela C. & Reed, Robert R., 2016. "Heterogeneous returns to knowledge exchange: Evidence from the urban wage premium," Journal of Economic Behavior & Organization, Elsevier, vol. 126(PA), pages 120-139.
    11. Chauvin, Juan Pablo & Glaeser, Edward & Ma, Yueran & Tobio, Kristina, 2017. "What is different about urbanization in rich and poor countries? Cities in Brazil, China, India and the United States," Journal of Urban Economics, Elsevier, vol. 98(C), pages 17-49.
    12. Jordy Meekes & Wolter H. J. Hassink, 2023. "Endogenous local labour markets, regional aggregation and agglomeration economies," Regional Studies, Taylor & Francis Journals, vol. 57(1), pages 13-25, January.
    13. De la Roca, Jorge, 2017. "Selection in initial and return migration: Evidence from moves across Spanish cities," Journal of Urban Economics, Elsevier, vol. 100(C), pages 33-53.
    14. Stefan P. T. Groot & Henri L. F. Groot, 2020. "Estimating the Skill Bias in Agglomeration Externalities and Social Returns to Education: Evidence from Dutch Matched Worker-Firm Micro-Data," De Economist, Springer, vol. 168(1), pages 53-78, March.
    15. Ehrl, Philipp & Monteiro Monasterio, Leonardo, 2016. "Historical trades, skills and agglomeration economies," MPRA Paper 69829, University Library of Munich, Germany.
    16. Couture, Victor, 2015. "Knowledge spillovers in cities: An auction approach," Journal of Economic Theory, Elsevier, vol. 157(C), pages 668-698.
    17. Koster, Hans R.A. & Ozgen, Ceren, 2021. "Cities and tasks," Journal of Urban Economics, Elsevier, vol. 126(C).
    18. Gilles Duranton & Diego Puga, 2023. "Urban Growth and Its Aggregate Implications," Econometrica, Econometric Society, vol. 91(6), pages 2219-2259, November.
    19. Paul Verstraten & Gerard Verweij & Peter Zwaneveld, 2018. "Why do wages grow faster in urban areas? Sorting of high potentials matters," CPB Discussion Paper 377.rdf, CPB Netherlands Bureau for Economic Policy Analysis.
    20. Marianna Belloc & Paolo Naticchioni & Claudia Vittori, 2023. "Urban wage premia, cost of living, and collective bargaining," Journal of Economic Geography, Oxford University Press, vol. 23(1), pages 25-50.

    More about this item

    Keywords

    Social interactions; Mobile phones; Face-to-Face interactions; Cities; Spatial sorting;
    All these keywords.

    JEL classification:

    • R10 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - General
    • R23 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Household Analysis - - - Regional Migration; Regional Labor Markets; Population
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
    • Z13 - Other Special Topics - - Cultural Economics - - - Economic Sociology; Economic Anthropology; Language; Social and Economic Stratification

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:juecon:v:119:y:2020:i:c:s0094119020300474. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/locate/inca/622905 .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.