A classic 1997 paper on mutual fund performance doesn’t describe present-day markets, Yale SOM's James Choi found.

Both online and in-person friendships are more likely to develop between people who have similar linguistic styles, according to a new study co-authored by Balázs Kovács at Yale SOM.

Should you trust your gut? A new study co-authored by Yale SOM’s Taly Reich finds that decisions made on the basis of feelings hold up longer in the face of new information than decisions made deliberately and rationally. 

According to preliminary research by Yale SOM’s Peter Schott and his co-authors, investors may be adjusting prices based on whether previous predictions of total infections seemed overly optimistic or pessimistic.

Yale SOM’s Mushfiq Mobarak and his co-authors investigated the prevalence of the disease in the crowded refugee camps and offered recommendations to slow its spread.

For charitable organizations that rely on donors for financial support, there is a delicate art to asking for gifts and expressing gratitude.

Nearly every business plan contains the assumption that as the company grows, its average costs will fall and profit margins will rise. But that isn’t borne out by the numbers.

New research finds that offering a free tier or giving existing customers bonuses for making referrals—or a combination—can be effective, depending on the size of the audience and whether the project has a social aspect.

Yale SOM’s Anya Nakhmurina found that fiscal monitoring policies, which require a state office to review local governments’ finances, boosted municipalities’ financial health and reduced corruption convictions of local officials.