Search the Site

Freakonomics Blog

Cheating, Casinos, and Accuracy: A Q&A With the Author of Bringing Down the House

Ben Mezrich Ben Mezrich‘s book Bringing Down the House — a nonfiction account of six M.I.T. card-counters who made millions in Las Vegas — has sold more than a million copies and was translated into 18 languages. But the changes made in the recent movie adaptation, 21, have (besides helping to bring in $23.7 million in the movie’s debut weekend) . . .



Medicine and Statistics Don’t Mix

Some friends of mine recently were trying to get pregnant with the help of a fertility treatment. At great financial expense, not to mention pain and inconvenience, six eggs were removed and fertilized. These six embryos were then subjected to Pre-Implantation Genetic Diagnosis (P.G.D.), a process which cost $5,000 all by itself. The results that came back from the P.G.D. . . .



How Much Progress Have Psychology and Psychiatry Really Made? A Freakonomics Quorum

The debate about the effectiveness and safety of psychiatric drugs rambles on while new (if not conclusive) psychological studies come out with the frequency of fad diets. We invited some people who think a lot about such issues — David B. Baker, John Medina, Dan Ariely, Satoshi Kanazawa, Peter D. Kramer, and Laurie Schwartz — and asked them the following: . . .



The Gang Tax

A few days ago, New York’s State Senate passed a bill making it illegal to recruit someone into a street gang. In the never-ending fight by city officials and legislators to combat gangs, this is one of the latest efforts to outmaneuver gang members. Other similar initiatives have included: city ordinances that limit two or more gang members from hanging . . .



I.Q.R. in a Box

Levitt doesn’t get why Yankovic’s “White and Nerdy” video generated thousands of YouTube comments when there’s the Johns Hopkins Department of Biostatistics. They do mostly poetry, but also have a music video: “I.Q.R. [interquartile range: a measure of statistical dispersion] In a Box” — a spoof on S.N.L.‘s slightly racier version. Zero comments so far, but video director Allison Lind, . . .



Not Enough Dirt to Go Around

News of the Weird has a depressing economics story this week about food prices in the poorer sections of Port-au-Prince, Haiti, which is perhaps the poorest country in the Western Hemisphere. The price of rice, the staple product, has doubled in the last year. This increase naturally has residents looking for substitutes for rice. Apparently in the past they have . . .



LIST-onomics: A Certain Percent

Lists are great. They can be revealing, cause anxiety, or serve no discernible purpose. But throw in some links and a statistic and you have … LIST-onomics, this blog’s newest diversion. Here is today’s list: 33 percent: … of parents say they set no rules for their children’s use of social networks. … the amount Indian steel prices shot up . . .



This Blog Not as Bad as Previously Thought

This really belongs over in the Naked Self-Promotion box to the right, but: Time magazine has conducted its First Annual Blog Index (totally scientific, I am sure) and guess what landed in the Top 25?



A Look Back at the Subprime Mess (or: Itzhak Ben-David Is a Prophet)

Back in June, 2007, we wrote a column about the research of Itzhak Ben-David, a Ph.D. candidate in finance at the University of Chicago (who has since accepted an assistant professor position at the Ohio State University). He had been studying the cash-back transaction — a real-estate sleight of hand in which cash-poor buyers received an unrecorded cash rebate from . . .



Important Message to Economists: You No Longer Need to Be Nice to Me

I became an editor at the Journal of Political Economy eight years ago. The J.P.E., as it is known within the economics profession, is one of the most prestigious academic journals in economics. Having a paper accepted or rejected at J.P.E. can make or break a young academic’s career. My guess is that having a paper published in the journal . . .



Back in the U.S.S.R.

Last October, we gathered a group of experts together to find out what U.S. air travel will look like ten years from now. If you want to remember what air travel looked like twenty years ago, try booking a flight to Russia on American Airlines’s website, which appears to give you the option of flying to the Union of Soviet . . .



Ask a College Student: A Freakonomics Quorum

This is the time of year when high-school seniors receive letters, thick or thin, from college admissions departments. (I have two nieces who both just got some thick letters from great schools: way to go, H. and L.!) Those seniors will soon start a new life. What’s in store for them? Freakonomics contributor Nicole Tourtelot put a few questions — . . .



This Week’s (In)Appropriate Names

Aptonyms are the gifts that keep giving. You toss out one or two here on the blog, and readers keep coming back with more. This week’s aptonyms include: A home-schooling mom and blogger whose last name is Hermitt. (Okay, it’s not great, but it’s pretty good.) And this Newsday article about teacher-student sex affairs quotes a “former Hofstra University professor . . .



More Heist-able: Your H.D.T.V. or Your A.C.?

Burglaries are on the decline across the United States, with at least one notable exception: increasingly, thieves are breaking into foreclosed homes — stripping out the copper pipes, wiring, and appliances — and selling their pilfered goods as scrap. From there, Treehugger reports, the scrap metal is most often shipped to China. Coincidentally, that’s the country Tyler Cowen credits for . . .



Make Your Predictions: The Next Big Political Scandal

We recently introduced you (or should that be “introductified” you?) to the Freakonomics Prediction Center that Predictify built for this blog. And you all went and predicted like mad. So here’s a new Predictify challenge. You can leave your answer in the comments below if you want but it is more fun and worthwhile to make your prediction in the . . .



Place Your Stock Bets Here

At its heart, Inspectd is a simple game: it shows you a chart of historical data on a random stock, asks you to bet on whether the stock’s price will rise or fall, and then immediately tells you if you won or lost — with another performance chart showing you why. And maybe that instant gratification is what makes this . . .



Do Hamburgers Cause Crime?

Most of us who eat meat regularly would still rather not kill an animal with our own hands. So we have, for generations, delegated that work to others. Jennifer Dillard, at Georgetown Law, authored a new paper looking at what that delegation costs the workers of industrial slaughterhouses. She argues that prolonged work on a kill floor exposes workers to . . .



How Much Does a Free iPhone Update Cost?

This morning I downloaded an update on the software for my iPhone. As so often happens with software updates, it completely screwed up the device, requiring me to spend an hour with tech support trying to get things fixed. One frequently faces the choice of whether to update software or not. The gains are some extra features. The out-of-pocket cost . . .



Our Daily Bleg: Did Clint Eastwood Really Say “Read My Lips”?

Last week we asked you for bleg requests — i.e., questions that the Freakonomics readership could collectively answer well. You responded with vigor, and we’ll turn “Our Daily Bleg” into a regular (if not exactly daily) feature. So look for your blegs to appear here in the future. (You can also send more suggestions to: bleg@freakonomics.com.) To inaugurate Our Daily . . .



Shermer on the Doping Dilemma

Michael Shermer, author of Mind of the Market and columnist extraordinaire at Scientific American, delivers an excellent column in this issue on sports doping. Shermer, it turns out, was a competitive cyclist who observed the rise of doping first-hand. He offers a number of suggestions for fighting illegal doping, such as disqualifying all team members from any event if one . . .



Who Cares About Pennies When There’s Candy?

In Argentina, buying a pack of gum can throw you into a standoff with the cashier, who, due to the country’s coin shortage, often lacks the correct change. Facing similar problems, nearby Paraguay has adopted a socially acceptable solution for vendors: when you don’t have change or need to round up, candy is acceptable currency. If Americans place as much . . .



What Is Fantasy For?

We know that Levitt loves the Harry Potter series. The Golden Compass trilogy — not so much. But the bigger question is: why do any of us love fantasy, and what good does it do us? Some good ideas have tumbled out of a lively discussion on the subject at Oxford’s Overcoming Bias blog, where Robin Hanson points out that . . .



Investing in Human Capital

I was pondering why many of my undergraduate students performed so poorly on my recent final exam when this video and a second one came across my desk. Perhaps my students are just investing in skills that are not tested on my exam. (Hat tip: Peter Thompson and Bob Warrington.)



The Stock Market Surged Yesterday Because … Why?

I may be wrong, but it strikes me that the articles that appear in nearly every newspaper every day that describe a particular day’s stock-market movements are pretty much worthless. They try to pin a cause or two on the effect that’s just been observed, when in fact the effect may have little relationship with the narrow causes being credited. . . .



Can E-Mail Persuade You to Vote?

If an e-mail message from a campaign or non-profit group were to pop up in your inbox on election day asking you to please go down to your polling place and cast your vote, would you do it? Probably not, if the results of a study by Notre Dame political scientist David Nickerson are any indication. Nickerson conducted 13 field . . .



Bill James Answers All Your Baseball Questions

Bill James I sure hope the Red Sox don’t start the season with a wicked slump. If so, people might blame this blog. When we solicited your questions for Bill James, the Sox’s data wizard, we didn’t know there’d be so many questions and that Bill would answer just about all of them. I hope he found some time over . . .



The FREAK-est Links

Real estate is back. April Fools’!(Earlier) “Ask a Mexican” calls it quits. Feeling insecure? Play a video game. Did preparation for Earth Hour defeat its purpose?(HT: Andrew)(Earlier)



Six Degrees of Kevin Bacon: Economists’ Version

Justin Lahart at the Wall Street Journal suggests a new party game for economists (or at least something to keep you awake if a conference gets dull): Six Degrees of Joe Stiglitz. He’s suggesting the econ version of the Paul Erdos number in math: If you drew a diagram linking different mathematicians, many of the lines would cross at Erdos. . . .



Do You Want to Live to Be 150?

Tonight at 10 p.m. E.D.T., ABC will broadcast a Barbara Walters special about longevity — or, really, super-longevity — that tries to sort out the many medical, social, and economic ramifications. I was interviewed for the show and apparently I appear toward the end of the hour. Most of the questions I was asked concerned the consequences, unintended and otherwise, . . .



Time vs. Fortune (Not the Magazines)

Nancy and Harry Chapin’s song, “Cat’s in the Cradle,” is one of my favorites, partly because of the beat, and partly because it illustrates one of the essential trade-offs in life. For those who don’t remember the lyrics, it sings of the life of a busy man who isn’t there when his son grows up and who, in old age, . . .