We examined whether people conform to or diverge from the most popular choice among their friends by conducting a large-scale field experiment on a leading social-networking site in China. Our setting allowed us to minimize confounding effects such as pre-existing taste similarities between a...

The literature of private provision of public goods suggests that incentive to contribute is inversely related to group size. This paper empirically tests this relationship using field data from Chinese Wikipedia, an online encyclopedia. We exploit an exogenous reduction in group size as a...

The literature of private provision of public goods suggests thatincentive to contribute is inversely related to group size. This paperempirically tests this relationship using field data from ChineseWikipedia, an online encyclopedia. We exploit an exogenous reduction ingroup size as a result of...

We analyze the optimal strategy of a high-quality incumbent that faces alow-quality ad-sponsored competitor. In addition to competing throughadjustments of tactical variables such as price or advertisingintensity, we allow the incumbent to consider changes in its businessmodel. We consider four...

Theories of multi-sided markets suggest that a platform's pricingstrategies on different sides of the market are closely linked, and inparticular, an increase in competition on one side may lead to anincrease in price on other sides. We empirically examine platforms'pricing strategies by...

<Para ID="Par1">Emerging location-based services in social media tools such as Foursquare and Twitter are providing an unprecedented amount of public-generated data on human movements and activities. This novel data source contains valuable information (e.g., geo-location, time and date, type of places) on...</para>

Platform owners sometimes enter complementors' product spaces to compete against them directly. Prior studies have offered two possible explanations for such entries: platform owners may target the most successful complementors so as to appropriate value from their innovations, or they may...

We study the impact of US quantitative easing (QE) on both the emerging and advanced economies, estimating a global vector error correction model (GVECM). We focus on the effects of reductions in the US term and corporate spreads. The estimated effects of QE are sizeable and vary across...

This article analyses the effect of the asset purchase programmes implemented by the Federal Reserve and the Bank of England in the wake of the global financial crisis on market- and survey-based measures of inflation expectations. The analysis suggests that central bank asset purchases did have...