British Prime Minister Theresa May met US President Donald Trump on Friday to garner support as UK is poised to leave European Union. May fared well in meeting with Trump, who promised her what the former demanded. She returns with Trump’s promise to seek an early trade deal with Britain once it leaves the European Union, a commitment from …

  Just a few years ago, many were proclaiming the decline of behavioural economics. In 2009, the well-known game theorist David Levine delivered a lecture called “Is Behavioural Economics Doomed?,” in which he casts doubt on some prominent behavioural theories. In a few fields, such as finance, behavioural ideas have gone mainstream; in others, like game theory, interest is slowly …

  Ebay Inc. has managed to right the ship. Now it’s time to get sailing.Shares in the e-commerce company rose 9 percent in after-hours trading as investors cheered a fourth-consecutive quarter of sales increases. Maintaining a full year of gains helped quiet concerns that without PayPal Holdings Inc., the subsidiary it split from in 2015, eBay would be left for …