This paper exploits hand-collected data on illegal insider trades to provide new evidence of the ability of standard measures of illiquidity to detect informed trading. Controlling for unobserved cross-sectional and time-series variation, sampling bias, and strategic timing of insider trades, I...

We apply network analysis to trace patterns of information transmission in an electronic limit order market. If market orders or large executable limit orders are submitted by informed traders, then resulting star-shaped or diamond-shaped patterns ndash; or trading networks ndash; should be...

This paper analyses the effects of innovation networks on product and process innovation and sales growth of high technology SMEs. Innovation networks are positively related to both product and process innovation, i.e. knowledge creation. One exception is the negative effect of innovation...

We study a model of social learning in networks where the dynamics of beliefs are driven by conversations of dissonance-minimizing agents. Given their current beliefs, agents make statements, tune them to the statements of their associates, and then revise their beliefs. We characterize the...

We build a model of network dynamics with decision-making under incomplete information in order to understand the determinants of the observed gradual downgrading of expert opinion on complicated issues and the decreasing trust in science. We suggest a search and matching mechanism behind...

How do social interactions shape collective action, and how are they mediated by networkedinformation technologies? We answer these questions studying the Temperance Crusade, a wave of anti-liquor protest activity spreading across 29 states between 1873-1874. Relying on exogenous variation in...

We study how communication platforms, or a society more generally, can improve social learning without censoring or fact-checking messages. We analyze learning as a function of social network depth (how many times information is relayed) and breadth (the number of relay chains accessed). Noise...

If individuals tend to behave like their peers, is it because of conformity, that is, the preference ofpeople to align behavior with the behavior of their peers; homophily, that is, the tendency ofpeople to bond with similar others; or both? We address this question in the context of an...

If individuals tend to behave like their peers, is it because of conformity, that is, the preference of people to align behavior with the behavior of their peers; homophily, that is, the tendency of people to bond with similar others; or both? We address this question in the context of an...

If individuals tend to behave like their peers, is it because of conformity, that is, the preference of people to align behavior with the behavior of their peers; homophily, that is, the tendency of people to bond with similar others; or both? We address this question in the context of an...