In time-use data from countries around the world, full-time male workers in the top income quartile sleep around half an hour less per day than those in the bottom quartile, and people in richer countries sleep less on average, implying an income elasticity of sleep of about -0.04.
When megafirms standardize tasks so anyone can do the job, a calibrated model finds output per worker rises more than 25% while relative wages fall about 8%, and the large-firm wage premium shrinks from over 50% to about 30%.
Across decades of US congressional and California local races, a one-standard-deviation rise in how pronounceable a candidate's name is went with 0.8 more percentage points of the vote in general elections, 1.4 in primaries and 0.29 in local races.
A calendar-time portfolio of analysts' top pick stocks generated abnormal returns of 17.6% a year, outperforming buy ratings, though only institutional investors could tell the valuable picks apart when they were announced.
In a lab experiment with 240 students, those who waited 20 minutes with strangers without their phones returned 116% of what partners sent in a trust game, against 91% for those with phone access, and 82.5% versus 62.5% chatted with someone.
Ancient DNA from three Indigenous Ancestors in Canada and Argentina, dated to roughly 860 to 1,310 years ago, carried Mycobacterium lepromatosis, showing this second leprosy bacterium circulated across the Americas long before European contact.
Tracking Michelin-listed restaurants in Great Britain and Ireland from 2010 to 2020, researchers found that losing stars raised average TripAdvisor ratings by about 0.31 points, while gaining stars changed nothing, apparently because diners expect less.
Using school entry cutoffs across European countries, economists found that students who are young for their class more often describe their normal-weight bodies as too thin, want to gain weight, eat more calorie-dense food and exercise less.
Surveys of 3,000 people in the US, UK, Italy, Poland, Mexico and South Africa found right-leaning respondents rated society from 1950 to 2000 more positively in every country. Experiments suggest ideology shapes the view of the past, not the reverse.
Using random group assignments on the PGA Tour, researchers found golfers scored 0.2 strokes better per round in politically homogeneous groups, worth five ranks before the cut and $13,000 to $23,400 in earnings. The gap widened when polarization was high.