Influencers are defined as independent opinion leaders on social media networks who influence the attitudes of their followers through blogs, tweets and the use of other social media. As a result, influencer marketing has become an integral part of brands' marketing strategies. This book has the...

Measuring the causal effects of digital advertising remains challenging despite the availability of granular data. Unobservable factors make exposure endogenous, and advertising's effect on outcomes tends to be small. In principle, these concerns could be addressed using randomized controlled...