We study both endogenous and exogenous peer effects in worker productivity using an explicit network approach. We apply this method to data from an in-house call center of a multinational mobile network operator that include detailed information on individual performance. We find that a 10%...

This study examines control in a teamwork setting, experimentally investigating two financial incentive systems that have been proposed in the agency theory-based analytic literature. Both systems rely on mutual monitoring, the ability of team members to observe each other's actions. However,...

I investigate introductions as a way of network formation. In the model, players are endowed with different ability levels and want to match with a neighbour as capable as possible. Introductions for unacquainted neighbours influence the matching outcome since the network structure is changed. I...

We study how friendship shapes students' political opinions in a natural experiment. We use the indicator whether two students were exogenously assigned to a short-term "integration group", unrelated to scholar activities and dissolved before the school year, as instrumental variable for their...

This paper explores possible theoretical underpinnings for homophily in signed social networks, particularly in the Indian context. The model of signed network formation proposed here considers a population which is divided into communities or identity groups that are hierarchically arranged in...

This paper uses a novel experimental design to study the contagion of pro- and anti-social behavior and the role of social proximity among peers. Across systematic variations thereof, we find that anti-social behavior is generally more contagious than pro-social behavior. Surprisingly, we also...

In this paper, we propose a connection model for formation of networks having both positive and negative links. We define utility functions of a node and hence of a network by using balanced and unbalanced triads in the network. Further, using those utility functions we define strongly efficient...

We present a dynamic model of social network formation in which a fixed number of agents interact in overlapping social groups. We derive several results on the formation of links in such networks, including results on the degree distribution, on comparative statics relating degree and group...

Using Facebook data on social connections, we identify the crucial role online social networks play in crowdfunding markets. Investors are 41.5% more likely to fund projects that their social network peers support and are 11.2% more likely to fund projects from regions to which they have strong...