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Steven D. Levitt

That Damn Harry Potter

When it comes to Harry Potter, I was a late adopter. For years, I chuckled at the avid readers who camped out at book stores the night before the latest book’s release. My wife is hard to buy for, so when she mentioned half-heartedly that she should read Harry Potter because all of her friends were fans, I bought her . . .

3/5/08

Beyond Belief

I have not seen the film Beyond Belief by Beth Murphy, but I have heard spectacular things about it. The film tells the story of two Sept. 11th widows who are working to help widows in Afghanistan. Here is the trailer. For those of you in Chicago, the local chapter of the United Nations Development Fund for Women (UNIFEM) is . . .

3/4/08

A Freakonomics Quiz for College Basketball Fanatics

Here is a hard quiz for you. Very hard. Even if you are both knowledgeable about college basketball and clever, I doubt you will answer this quiz correctly. It is a two part question: I heard Roy Williams speak recently. (1) Who did Williams describe as “the best 3-point shooter he ever coached?” (2) On what basis did he make . . .

3/3/08

R U Studying?

Roland Fryer and Joel Klein are back at it again, trying innovative approaches to help students in the New York City schools learn. Fryer, who is a tenured professor at Harvard, a frequent co-author of mine, and Chief Equality Officer in the New York City school system, was the driving force behind a pilot program now ongoing in New York . . .

2/29/08

A Not So Romantic Valentine’s Day

As a Valentine’s Day present to my wife, Jeannette, I flew her to romantic Council Bluffs, Iowa, and bought her an entry into the High-Heeled Poker Tour event being played there over the weekend. These are women-only events, with the winner taking home the coveted “high-heel” necklace. Just so she understood that this truly was a Valentine’s gift to her . . .

2/28/08

Economists Finally Find a Cause: Saving ATUS

There is no shortage of groups made up of citizens banding together for a cause: Greenpeace, Doctors without Borders, Save the Children, the KKK, etc. I suspect that if you look at the data, you will see that economists are nearly always underrepresented in these organizations. No doubt there are many factors contributing to this result. In general, economists tend . . .

2/25/08

A Changing of the Guard at the National Bureau of Economic Research

Few people outside of academic economists have ever heard of the National Bureau of Economic Research (N.B.E.R.). Within the profession, however, it plays an enormously important role as an information clearinghouse. Through a series of well-attended conferences and the ubiquitous, yellow-jacketed N.B.E.R. Working Paper series (which, by my estimates, may contain more than 13,000 papers by now), the N.B.E.R. serves . . .

2/20/08

More On Roger Clemens

Last week, Justin Wolfers offered an insightful analysis of Roger Clemens‘s career statistics and what those statistics imply about the likelihood that Clemens used steroids. The latest contribution to this debate is by sabermetric legend Nate Silver of Baseball Prospectus. Using only data through 1997, Nate generates a projection of what Clemens‘s stats should have looked like from 1998-2001, the . . .

2/18/08

I Get to Pretend That I Am a Scientist for a Day…

… because today the Science journal published a short commentary [subscription required] written by myself and John List, on the topic of behavioral economics. Our piece begins like this: The discipline of economics is built on the shoulders of the mythical species Homo economicus. Unlike his uncle, Homo sapiens, H. economicus is unswervingly rational, completely selfish, and can effortlessly solve . . .

2/15/08

More Trouble for Sumo Wrestling

If you thought the cheating in sumo was bad enough, now they are talking about murder charges.

2/15/08

Oversubscribed Classes

I make a brief cameo appearance in this Chronicle of Higher Education article about how universities allocate students to popular courses. It mentions the student who tried to sell her spot in my class, thereby bringing down the wrath of the University administration. I liked her approach, though, so we’ve now got her employed doing research assistance for the sequel . . .

2/14/08

Score a Point for Seth Roberts and the Shangri-La Diet

Earlier this week, we linked to a news article about a medical study finding that rats gained about the same amount of weight (80 grams, versus 72 grams on average) when they ate saccharine sweetened yogurt as when they ate yogurt sweetened with glucose. In both cases, the rats ate the yogurt in addition to their regular food. If I . . .

2/13/08

Does Campaign Spending Matter? Ask Mitt Romney

In Freakonomics, we argued that campaign spending matters a lot less than people think. Mitt Romney‘s presidential campaign would seem to offer a fresh bit of evidence in favor of our theory. Viewed in this light, Hillary Clinton‘s decision to loan her campaign $5 million looks like the wrong move. It isn’t the money that is boosting Obama. Rather, it’s . . .

2/12/08

The Simple Tax Return

Economist Austan Goolsbee has a $44 billion idea called the “Simple Return”: Around two-thirds of taxpayers take only the standard deduction and do not itemize. Frequently, all of their income is solely from wages from one employer and interest income from one bank. For almost all of these people, the IRS already receives information about each of their sources of . . .

2/11/08

We Had Better Get Our Next Book Out: John DiNardo Is Getting Bored

As mentioned on MarginalRevolution, the economist John DiNardo has been quite busy over the last few years criticizing Freakonomics. He has written no fewer than three papers on the subject. It’s too bad that he didn’t offer the standard academic courtesy of sending his criticisms directly to me before writing them up; if he had, I could have helped clarify . . .

2/6/08

Win A Few Bucks If You Can Teach Economics

Not many economists are great teachers. The sorts of skills that get you into graduate school (like getting an “A+” in Advanced Real Analysis) are not highly correlated with being a star at the blackboard. Combine lack of natural talent with weak incentives to teach well at the top research institutions, and the results in the classroom are often not . . .

2/4/08

A Must-Have Robot

I have often heard people say that robots will prove immensely useful in performing household tasks, but I have had a hard time understanding how. I have also wondered why so much scientific effort goes into making robots look like humans. It is not easy to design robots that walk on two legs, for instance. But after reading this interview . . .

1/31/08

Matchmakers Not Showing Much Love

John Tierney has writen an interesting column about competing online dating sites and the squabbles between them over whose matchmaking algorithm is more scientific. A recently divorced friend of mine just dipped her toes into the online dating world for the first time. She entered her information: lives in a large city, late thirties, divorced, well-educated, loves to dance, etc. . . .

1/30/08

What Do Lolita and Freakonomics Have in Common?

A Cal Tech grad student put together a list of the most popular books across college campuses and then correlated those book choices with S.A.T. scores at those schools. His results reveal that the five books with the highest average S.A.T. scores are Lolita, 100 Years of Solitude, Crime and Punishment, Freakonomics, and Atlas Shrugged. Among those five books, I . . .

1/30/08

A Hannah Montana Concert (as Seen Through the Eyes of an Economist)

Hannah Montana is the hottest thing going. Her concerts are all sold out and scalpers are netting thousands of dollars for her tickets, according to media reports. What is an economist who wants to see a Hannah Montana show to do? Here is the true story of one such escapade. (The economist in question has asked me to keep his . . .

1/29/08

Giving Rogues a Bad Name

The Times of London has an excellent article on “rogue trader” Jérôme Kerviel, who recently lost 5 billion euros for the French bank where he worked. Even when caught red-handed, he didn’t give up the charade. His escapades make my poker losses look small by comparison. Even if you add in my wife’s poker losses, we are only starting to . . .

1/28/08

With the Stock Market Down, Perhaps Diamonds Are a Good Place to Invest

Not the sort of diamonds you wear on your finger, but baseball diamonds. Randy Newsom, a minor league baseball player, recently offered himself up as an I.P.O. Interested investors can buy up to 4% of his future major league income. The price is not that high: $20 per share, with each share entitling the owner to .0016% of his potential . . .

1/28/08

How We Would Fight Steroids If We Really Meant It

Aaron Zelinsky, a student at Yale Law School, recently proposed an interesting three-prong anti-steroid strategy for Major League Baseball: 1) An independent laboratory stores urine and blood samples for all players, and tests these blood samples 10 years, 20 years, and 30 years later using the most up-to-date technology available. 2) Player salaries are paid over a 30-year interval. 3) . . .

1/23/08

What Do Declining Abortion Rates Mean for Crime in the Future?

The abortion rate in the United States is at a thirty year low — though even with the decline, we are still talking about a large number of abortions in absolute terms, or 1.2 million per year. To put this number into perspective, there are about 4 million births per year in the U.S. John Donohue and I have argued . . .

1/22/08

StickK To Your Commitments

Back when I was an undergraduate, I took a class from the future Nobel Laureate Tom Schelling. One day in class, he was talking about commitment problems: when you want to achieve a goal, but lack the self control to do it. As I recall, he offered two pieces of advice for those trying to lose weight. The first was . . .

1/21/08

Two Good Lectures This Week If You Live in Chicago

Michael Shermer, a noted skeptic who writes a monthly column for Scientific American, is visiting the University of Chicago campus tonight to talk about his new book, The Mind of the Market. I’m halfway through the book, which explores how evolution has shaped the way people interact with the modern economy. It is extremely interesting, and I will write more . . .

1/14/08

A Book I Absolutely Loved: Gang Leader For A Day

There are few people I have ever met who are more interesting to talk to than Sudhir Venkatesh. I’ve known him for over a decade, and I cannot remember ever having a boring conversation with him. This Q&A with Venkatesh gives you a sedate and sanitized peek into the sorts of things he has been part of throughout his career. . . .

1/10/08

Schwarzenegger Lowers Crime

California Governor Arnold Schwarzenegger is one politician who can credibly claim that he is truly responsible for reducing crime, at least if you believe a new study by economists Gordon Dahl and Stefano DellaVigna. It isn’t his policies as governor, however, that he can take credit for, but rather his acting roles. In their new paper entitled “Does Movie Violence . . .

1/9/08

What Do I Have In Common With Hannah Montana?

I sometimes do wear a wig and too much eye makeup, but that’s not what I had in mind. The answer to the question is that people are scalping tickets to both of our performances. There was uproar recently about the steep prices resellers were getting for her concert tickets — sometimes upwards of $2,000. My venue is a little . . .

1/8/08

Physics With a Bang!

My daughter Olivia, who is seven, proudly calls herself a scientist. Mostly what that means is that she likes to break things open and see what’s inside. Seeing a fantastic series of scientific experiments done as part of a holiday lecture put on by the University of Chicago Physics Department more or less confirmed her definition of science. In “Physics . . .

1/3/08

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