Extent of Network Effects and Social e Interaction Effects

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Author(s): Erik den Hartigh (Delft University of Technology, The Netherlands)
Copyright: 2008
Pages: 6
Source title: Encyclopedia of Networked and Virtual Organizations
Source Author(s)/Editor(s): Goran D. Putnik (University of Minho, Portugal)and Maria Manuela Cruz-Cunha (Polytechnic Institute of Cavado and Ave, Portugal)
DOI: 10.4018/978-1-59904-885-7.ch077

Keywords: Information Science Reference / Media & Communications / Social Computing / Virtual Communities & Virtual Reality

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Abstract

In economics and management science, there has been increasing interest in network effects and social interaction effects. Network effects occur when to an economic agent (e.g., a consumer of a firm), the utility of using a product or technology becomes larger as its network of users grows in size (Farrell & Saloner, 1985; Katz & Shapiro, 1985). The network effect may set in motion a positive feedback loop that will cause a product or technology to become more prevalent in the market. Social interaction effects occur when an economic agent’s preference for a product or technology is dependent upon the opinions or expectations of other economic agents. The social interaction effect may set in motion a positive feedback loop that will cause agents to expect that a certain product or technology will become more prevalent in the market. In markets, network effects and social interaction effects appear for example in the emergence of fashions and fads (e.g., Abrahamson & Rosenkopf, 1997; Bikhchandani, Hirschleifer, & Welch, 1992) and in technology adoption and standardization (e.g., Arthur, 1989; Katz et al., 1985). Theory and existing research suggest that the presence of network effects and social interaction effects in markets has important implications for market structure, for market outcomes and, as a consequence, for the behavior and the performance of firms that are active in those markets (e.g., Arthur, 1996; Schilling, 1998; Shapiro & Varian, 1999). An important question is therefore under which conditions these network effects and social interaction effects occur in markets.

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