We study the diffusion of a true and a false opinion (the rumor) in a social network. Upon hearing an opinion, individuals may believe it, disbelieve it, or debunk it through costly verification. Whenever the truth survives in steady state, so does the rumor. Online social communication...

In this paper we perform an empirical analysis at the firm level by assessing the impact of an environmental subsidy programme on environmental investment (direct effect) and environmental R&D investment (indirect effect) in a sample of Dutch manufacturing firms between 1999 and 2011. Our...