Beyond Tele-Substitution: Disaggregate Longitudinal Structural Equations Modeling of Communication Impacts
Information on the number and types of communication activities (including travel) engaged in over a period of four consecutive days, at two points in time about six months apart, was collected from 91 respondents in the context of the introduction of a community network to the city of Davis, California. Three major types of communication were measured: personal meetings (and in a separate but related measure, trips), transfer of an information object (in-house documents, regular mail, and express or overnight mail), and electronic (phone, fax, and e-mail). A system of structural equations was developed and estimated, expressing the number of instances of each type of communication at time 2 as a function of: the number of instances of each type at time 1, the elapsed time between measurements, and exogenous sociodemographic variables. All "own" lagged effects (that is, the effect of one communication type in wave 1 on the same type of communication in wave 2) were found to be positive and (except for information object delivery) highly significant. The "elapsed time" variable was always positive and (except for personal meetings and, in one model, information object delivery) significant; these effects indicate net generation of communication activities over time. Significant "cross" lagged effects (that is, the effect of one communication type in wave 1 on a different type in wave 2) were mostly positive, indicating the presence of some complementarity effects across modes. However, relationships specifically between electronic forms of communication and personal meetings or trips were not significant in either direction for the final models. Several exogenous variables were significant in logical ways.
|Date of creation:||01 Feb 1999|
|Date of revision:|
|Contact details of provider:|| Postal: 2028 Academic Surge, One Shields Avenue, Davis, CA 95616|
Phone: (530) 752-6548
Web page: http://www.escholarship.org/repec/itsdavis/
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Mokhtarian, Patricia & Handy, Susan & Salomon, Ilan, 1995.
"Methodological Issues in the Estimation of the Travel, Energy, and Air Quality Impacts of Telecommuting,"
Institute of Transportation Studies, Working Paper Series
qt44n3k2jp, Institute of Transportation Studies, UC Davis.
- Mokhtarian, Patricia L. & Handy, Susan L. & Salomon, Ilan, 1995. "Methodological issues in the estimation of the travel, energy, and air quality impacts of telecommuting," Transportation Research Part A: Policy and Practice, Elsevier, vol. 29(4), pages 283-302, July.
- Balepur, Prashant Narayan, 1998. "Impacts of Computer-Mediated Communication on Travel and Communication Patterns: The Davis Community Network Study," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt6cb1f85c, Institute of Transportation Studies, UC Berkeley.
- Claisse, Gérard & Rowe, Frantz, 1993. "Domestic telephone habits and daily mobility," Transportation Research Part A: Policy and Practice, Elsevier, vol. 27(4), pages 277-290, July.
- Gould, Jane & Golob, Thomas F., 1997. "Shopping Without Travel or Travel Without Shopping? An Investigation of Electronic Home Shopping," University of California Transportation Center, Working Papers qt6vc504h9, University of California Transportation Center.
- Mokhtarian, Patricia L., 1990. "A Typology of Relationships Between Telecommunications And Transportation," University of California Transportation Center, Working Papers qt4rx589m0, University of California Transportation Center.
When requesting a correction, please mention this item's handle: RePEc:cdl:itsdav:qt4hg365gh. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Lisa Schiff)
If references are entirely missing, you can add them using this form.