The 2021 Nobel prize in economics was awarded Monday to three economists for pioneering "natural experiments" to show real-world impacts. Joshua Angrist, David Card and Guido Imbens have researched ...

Regarding David Henderson’s op-ed “ ‘Natural Experiments’ Lead to an Economics Nobel” (Oct. 12): Natural experiments require circumstances in which political events, geopolitical boundaries and so ...

A natural experiment is an empirical study in which individuals (or clusters of individuals) are exposed to the experimental and control conditions that are determined by nature or by other factors ...

Banning sodas from school vending machines, building walking paths and playgrounds, adding supermarkets to food deserts and requiring nutritional labels on restaurant menus: Such changes to the ...

One of the difficulties of being a political scientist is that, for many excellent ethical reasons, it’s very difficult to run experiments in the real world. True, an increasing fraction of political ...

During the 2004 election, there was a substantial amount of discussion about whether or not "pro-life" legislation [1] effectively reduces the incidence of abortion. Some religious leaders and ...

Moving to more polluted areas was associated with an increase in body mass index, according to an analysis of more than 46,000 children and adolescents living in Catalonia. A large natural experiment ...

Shift Happens is my favorite bumper sticker. I love the genuineness of natural experiments, when shifts in policy, practice or environment stimulate changes. As a scientist, I’m supposed to value the ...

To geomorphologist Taylor Perron, the answers to some of the biggest questions about our solar system are found in the way a landscape changes over time. Studying a range of topics that at first ...

Randomized controlled trials remain the gold standard, but natural experiments can help doctors who need answers now. By Anupam B. Jena and Christopher M. Worsham A drug that has recently been found ...

The Nobel Memorial Prize in Economic Sciences was awarded Monday to David Card of the University of California, Berkeley, Joshua Angrist of the Massachusetts Institute of Technology and Guido Imbens ...