We present a model of altruistically-minded-yet rational-players contributing to a public good. A key feature is the tension between altruism and "crowding-out" effects (players' efforts are strategic substitutes). We find that more altruistic behaviour can raise or reduce welfare, depending on...

Gas prices around the world va’y widely despite being connected by international trade of LNG Some industry observers argue hat major exporters g , Qatar) have acted irrationally by failing to engage in price arbitrage. This is also difficult to reconcile with a perfectly competitive model in...