ICT Revolution, Globalization and Informational Lock-in

We examine a model of social learning in networks following the lines of Bala and Goyal (1998, 2001). As a model of agents’ behaviour we have chosen the model of informational cascades of Bikhchandani et al (1992). Similarly to Bala and Goyal we find that the higher the ’degree of integration’ within the society is, the more likely it is that conformity of actions will arise. However, unlike their results our model suggests that in the presence of informational externalities globalisation of informational flows, expressed in the increasing density of communication channels in a network, may drive down the expected social welfare.microeconomics ;

ICT Revolution, Globalization and Informational Lock-in

We examine a model of social learning in networks following the lines of Bala and Goyal (1998, 2001). As a model of agents’ behaviour we have chosen the model of informational cascades of Bikhchandani et al (1992). Similarly to Bala and Goyal we find that the higher the ’degree of integration’ within the society is, the more likely it is that conformity of actions will arise. However, unlike their results our model suggests that in the presence of informational externalities globalisation of informational flows, expressed in the increasing density of communication channels in a network, may drive down the expected social welfare.Social learning, Cascades, Globalization, Networks

Social norms and equality of opportunity in conspicuous consumption: on the diffusion of consumer good innovation

This paper presents a simple evolutionary model to study the diffusion patterns of product innovations for consumer goods. Following a Veblenian theme, we interpretconsumption as a social activity constrained by social norms and equality of opportunity. Societies that allow for more behavioral variety will experience faster adoption of new consumer goods. We also find that the speed of diffusion as well as the saturation levels reached highly depend on the equality of opportunity. Combining these two effects, we conclude that a social structure displaying behavioral variety and equal opportunities dominates any other social set-up in terms of the speed of adoption of product innovations.economics of technology ;

Caste as Community? Networks of social affinity in a South Indian village

We examine three theories of caste and community using new data on social networks among residents of a south Indian village. The first theory treats individual caste groups as separated communities driven by the Brahmanical ideology of hierarchy based on purity and pollution. The second theory departs from the first by placing kings and landlords at the centre of rural (primeval) social structure. Here ritual giving by kings provides the glue that holds a community together by transferring inauspiciousness to gift-recipients and ensuring community welfare. The third theory, that may be treated as a corollary of the second, argues that powerful leaders in the religious and political domains act as patrons of people in their constituencies and forge a sense of community. The resulting community may be single or multi-caste. Using a community structure algorithm from social network analysis, we divide the network of the village into thirteen tight-knit clusters. We find that no cluster or community in the social network has exactly the same boundaries as a caste group in the village. Barring three exceptions, all clusters are multi-caste. Our results are most consistent with the third theory: each cluster has a patron/leader who represents the interests of his constituency at village-level fora and bridges caste and community divides.Social networks, culture, caste, social change, community development, rural India

Small Worlds in Networks of Inventors and the Role of Science: An Analysis of France.

· Using data on patent applications at European Patent Office, we examine the structural properties of networks of inventors in France in different technologies, and how they depend from the inventive activity of scientists from universities and public research organizations (PROs). We revisit earlier findings on small world properties of social networks of inventors, and propose more rigorous tests of such hypothesis. We find that academic and PRO inventors contribute significantly to patenting in science‐based fields. Such contribution is decisive for the emergence of small world properties.networks, inventors, academic patenting, small world.

Productivity effects of innovation, stress and social relations

Innovation is a source of increasing productivity, but it is also a source of stress. Psychological research shows that moderate stress increases the productivity of an actor, but above a certain level, additional stress decreases productivity. Stress is reduced by coping behaviour of the actor, and in addition it is buffered by social relations. However, high levels of stress negatively affect social relations, causing social erosion. In a formal model including inter-agent dynamics, we show that the variables moderating stress levels are of crucial importance for identifying the overall effects of different rates of innovation on productivity. The model shows among other things that the existence and nature of relationships of people determine the extent to which a certain rate of innovation effectively results in increasing productivity. In addition, it shows the possibility of multiple equilibria - under some parameter values both high- and low-stress steady states exist; and the dynamics exhibit hysteresis. At very high levels of stress, innovation can result in a dissolution of social relations, and has a negative relationship with the rate of economic growth.innovation, work-related stress, social relationships

Fits and Misfits: Technological Matching and R&D Networks

This paper presents an economic model of R&D network formation through the creation of strategic alliances. Firms are randomly endowed with knowledge elements. They base their alliance decisions purely on the technological fit of potential partners, ignoring social capital considerations and indirect benefits on the network. This is sufficient to generate equilibrium networks with the small world properties of observed alliance networks, namely short pairwise distances and local clustering. The equilibrium networks are more clustered than "comparable" random graphs, while they have similar characteristic path length. Two extreme regimes of competition are examined, to show that while the competition has a quantitative effect on the equilibrium networks (density is lower with competition), the small world features of the equilibrium networks are preserved.network formation, small worlds, R&D networks, strategic alliances, business clusters

Social network and private provision of public goods

Using a simple model with interdependent utilities, we study how social networks influence individual voluntary contributions to the provision of a public good. Departing from the standard model of public good provision, we assume that an agent’s utility has two terms: (a) ‘ego’-utility derived from the agent’s consumption of public and private goods, and (b) a social utility which is the sum of utility spillovers from other agents with whom the agent has social relationships. We establish conditions for the existence of a unique interior Nash equilibrium and describe the equilibrium in terms of network characteristics. We show that social network always has a positive effect on the provision of the public good. We also find that, in networks with “small world”-like modular structures, ‘bridging’ ties connecting distant parts of social network play an important role inducing an agent’s contribution to public good. Assumptions and results of the model are discussed in relation to the role of social capital in community-level development projects and to the effect of innovation networks on firms’ R&D investments

Bank lending networks, experience, reputation, and borrowing costs.

We investigate the network structure of syndicated lending markets and evaluate the impact of lenders’ network centrality, considered as measures of their experience and reputation, on borrowing costs. We show that the market for syndicated loans is a “small world” characterized by large local density and short social distances between lenders. Such a network structure allows for better information and resources flows between banks thus enhancing their social capital. We then show that lenders’ experience and reputation play a significant role in reducing loan spreads and thus increasing borrower’s wealth.agency costs, bank syndicate, experience, loan syndication, reputation, small world, social network analysis.

Academic Patenting in Europe: New Evidence from the KEINS Database.

The paper provides summary statistics from the KEINS database on academic patenting in France, Italy, and Sweden. It shows that academic scientists in those countries have signed many more patents than previously estimated. This re‐evaluation of academic patenting comes by considering all patents signed by academic scientists active in 2004, both those assigned to universities and the many more held by business companies, governmental organizations, and public laboratories. Specific institutional features of the university and research systems in the three countries contribute to explain these ownership patterns, which are remarkably different from those observed in the US. In the light of these new data, European universities’ contribution to domestic patenting appears not to be much less intense than that of their US counterparts.