On a Friday morning last January, a group of Washington, D.C., commuters played an unwitting role in an experiment. As they emerged from the L’Enfant Plaza metro station, they passed a man playing a violin. Dressed in a long-sleeved T-shirt, baseball cap, and jeans, an open case for donations at his feet, he looked like an ordinary busker. In reality, he was Joshua Bell, an internationally renowned musician. The idea was to gauge
whether Bell’s virtuosic playing would entice the rushing commuters to stop and listen.

The experiment’s mastermind was Washington Post staff writer Gene Weingarten, who had dreamed it up after seeing a talented keyboardist be completely ignored as he played outside another metro station. “I bet Yo-Yo Ma himself, if he were in disguise, couldn’t get through to these deadheads,” Weingarten says he thought at the time. Ma wasn’t available to test the hypothesis, but Bell was.

For three-quarters of an hour, Bell played six pieces, including some of the most difficult and celebrated in the classical canon. Of 1,097 passersby, twenty-seven made donations totaling just over $30. Seven stopped for more than a minute. The remaining 1,070 breezed by, barely aware of the supremely talented violinist in their midst.

When Weingarten’s account of the experiment ran in the Post’s magazine three months later, readers followed the narrative with rapt attention that contrasted starkly with the indifference of the commuters. The article was discussed on blogs and other forums devoted to classical music, pop culture, politics, and social science. Weingarten said he received more feedback from readers than he had for any other article he had written in his thirty-five-year career. Many were taken with the chutzpah of disguising Joshua Bell as a mendicant just to see what would happen. Others were shocked that people could ignore a world-class musician. Still others argued that the results were insignificant: rerun the experiment outdoors on a sunny day, they said, and Bell would draw a massive crowd.

I was one of those rapt readers, but I wasn’t quite sure what to make of the piece’s appeal. Was it just a clever gimmick or was there something more profound going on? At the same time, the story felt familiar. Indeed, Weingarten’s experiment was a recent entry in a journalistic genre with deep, quirky roots.

Working on a hunch that begs to be tested or simply struck with an idea for a good story, journalistic “experimenters,” for lack of a better term, step out of their customary role as observers and play with reality to see what will happen. At their worst, these experiments are little more than variations on reality-TV operations that traffic in voyeurism and shame. At their best, they manage to deliver discussion-worthy insights into contemporary society and human nature. The very best, perhaps, serve up a bit of both. In any case, the growing number of journalists and news operations who do this sort of thing are heirs to a brand of social psychology practiced from the postwar years through the early seventies. During this period, considered by some the golden age of the discipline, experiments were bold and elaborately designed and frequently produced startling results. Many were conducted outside the laboratory and often placed subjects in stressful or disturbing situations.

These experiments also have roots in forms of investigative, immersion, and stunt journalism that have been practiced for more than a century. In 1887, while working on an expos√© of asylum conditions, muckraker Nellie Bly demonstrated that one could feign insanity to gain admission to a madhouse—and when she began to insist that she was in fact perfectly sane, doctors interpreted her claims as delusions. In so doing, Bly anticipated psychologist David Rosenhan’s classic 1972 experiment in which “pseudopatients” claiming to hear voices were admitted to psychiatric hospitals and then kept for an average of several weeks despite reverting to sane behavior.

Daniel Weiss is a freelance writer based in New York City.