This is really a paper about alcohol, and indeed “the a word” dominates the very first paragraph of the text, here is the abstract:

Jason M. Lindo, Peter Siminski and Isaac D. Swensen

This paper considers the degree to which events that intensify partying increase sexual assault. Estimates are based on panel data from campus and local law enforcement agencies and an identification strategy that exploits plausibly random variation in the timing of Division 1 football games. The estimates indicate that these events increase daily reports of rape with 17–24-year-old victims by 28 percent. The effects are driven largely by 17–24-year-old offenders and by offenders unknown to the victim, but we also find significant effects on incidents involving offenders of other ages and on incidents involving offenders known to the victim.

That is from American Economic Journal: Applied Economics; from that same issue we also learn that “…increases in [Russian] alcohol prices would yield significant reductions in mortality.”

Baseball has dominated the cultural and sporting life of Palau for almost 100 years, which is about four times longer than Palau’s been an independent nation. Over the years, Palauans have shaped the game to fit their island lives. Kids learn to play with bamboo bats and coconut-leaf balls. Pitchers chew betel nut instead of dip. Monsoons rain out not just games and series, but entire seasons of league play. Local traditions of witchcraft have crossed over into the country’s sporting life; even today, it’s not uncommon for accusations of black magic to fly after particularly contentious games. (I’ve been reporting on and off from Palau for seven years, so I’m used to it. THIS pitcher’s dad was a known wizard; THAT team’s manager caught women from an opposing village burning leaves over home base.) Baseball as it’s played in Palau is a decidedly Palauan thing.

But baseball has also shaped Palau. It’s more than a national pastime here. It’s an organizing principle—or, more accurately, a re-organizing principle. Before the 20th century, Palau was a matriarchy. Women controlled most aspects of society, and men were limited to fishing, fighting, and handling village-to-village diplomacy. Then colonial rule brought centralized government—and baseball—to the archipelago. Ever since, these two male-dominated worlds have fed on each other, with Palau’s baseball leagues serving as a kind of farm system for government service. Scores of congressmen, senators, diplomats, and heads of state have passed through Palau’s dugouts on their way to political power.

Here is much more, from David Walker, and here is Wikipedia on Palau.  For the pointer I thank Stephen Jonoes.

Michael R. Ransom and Tyler Ransom have a new paper on this question:

We examine the extent to which participation in high school athletics has beneficial effects on future education, labor market, and health outcomes. Due to the absence of plausible instruments in observational data, we use recently developed methods that relate selection on observables with selection on unobservables to estimate bounds on the causal effect of athletics participation. We analyze these effects in the US separately for men and women using three different nationally representative longitudinal data sets that each link high school athletics participation with later-life outcomes. We do not find consistent evidence of individual benefits reported in many previous studies – once we have accounted for selection, high school athletes are no more likely to attend college, earn higher wages, or participate in the labor force. However, we do find that men (but not women) who participated in high school athletics are more likely to exercise regularly as adults. Nevertheless, athletes are no less likely to be obese.

The pointer is from the excellent Kevin Lewis.  Kevin also refers us to this paper: “…the large portion of the variance in a four-item economic egalitarianism scale can be attributed to genetic factor[s].”

It should be collaborative rather than adversarial:

Integration is a common policy used to reduce discrimination, but different types of integration may have different effects. This paper estimates the effects of two types of integration: collaborative and adversarial. I recruited 1,261 young Indian men from different castes and randomly assigned them either to participate in month-long cricket leagues or to serve as a control group. Players faced variation in collaborative contact, through random assignment to homogeneous-caste or mixed-caste teams, and adversarial contact, through random assignment of opponents. Collaborative contact reduces discrimination, leading to more cross-caste friendships and 33% less own-caste favoritism when voting to allocate cricket rewards. These effects have efficiency consequences, increasing both the quality of teammates chosen for a future match, and cross-caste trade and payouts in a real-stakes trading exercise. In contrast, adversarial contact generally has no, or even harmful, effects. Together these findings show that the economic effects of integration depend on the type of contact.

That is from a new paper by Matt Lowe, and Matt is a job market candidate coming out of MIT.

And here is a recent paper by Devesh Kapur, Chandra Bhan Prasad, Lant Pritchett and D. Shyam Babu, on the benefits of modernity for Dalits, here is one short bit of the abstract:

The survey results show substantial changes in a wide variety of social practices affecting Dalit well-being—increased personal consumption patterns of status goods (e.g. grooming, eating), widespread adoption of ―elite‖ practices around social events (e.g. weddings, births), less stigmatising personal relations of individuals across castes (e.g. economic and social interactions), and more expansion into nontraditional economic activities and occupations.

That said, please do not confuse “big improvements” with “no serious problem.”

China degree of the day

by on November 6, 2017 at 1:42 am in Education, Sports, Web/Tech | Permalink

Competitive video game tournaments enjoy a huge following in China, and now, 18-year-old Feng is among 60 students enrolled in the country’s first-ever college program specializing in esports.

Last year was a landmark year in the world of esports. In September, “esports and management” was added to the Ministry of Education’s list of permitted college majors. Three months later, the Communication University of China, Nanguang College, in Nanjing announced the launch of its own esports-related degree: Art and Technology (Esports Analysis), a four-year undergraduate program teaching event organizing, data analysis, gaming psychology, video content production, and esports team coaching. According to the school, graduates can expect to carve out careers in China’s booming esports industry as tournament organizers, online show producers, commentators, strategy analysts, and club managers.

Here is the full story, from the consistently interesting Sixth Tone. And note:

Staffordshire University in the U.K. will offer an undergraduate esports program starting in September 2018, while a number of U.S. colleges now provide esports scholarships for talented gamers.

Just don’t tax their tuition waivers!

Re: the rebuilding attempts of the Philadelphia 76ers:

[John] Wall shed light on an underrated issue when he said: “The toughest thing you have is two young players that want to be great. Sometimes it might work, and sometimes it might not work.”

Think about that. Here’s what Wall is saying: It’s easier for stars to coexist when there is more separation of age and aspiration and an understanding of the hierarchy. Wall and Beal figured it out. The Sixers have three young potential all-stars trying to mix individual accolades and team success at once.

Wizards center Marcin Gortat cited asymmetric information:

“You know what the hardest thing for the young man is?” Gortat said during a recent interview. “We all enjoy diamonds. We all enjoy women. We all enjoy cars and beautiful houses, trips, the best parties and the life. The hardest thing is to come at 6 o’clock in the morning to the gym when nobody watches you. It’s easy to play when you have 20,000 people in the stands — women, cheerleaders, actresses, models, front-row celebrities — but it’s really hard to wake up at 6 o’clock in the morning and go to the gym and work on your left hand. This is the hardest part, when nobody’s watching.”

Here is the full Jerry Bewer story.  I watched two games with Philadelphia and Milwaukee, to update my knowledge of the NBA a bit, and now I’ll return to my rabbit hole for a while.

Request for requests

by on October 17, 2017 at 9:18 am in Sports, Weblogs | Permalink

What would you all like to hear about?  I do pay some heed, sometimes.

Celebrity Misbehavior

by on October 11, 2017 at 2:26 am in Economics, Law, Sports, Television | Permalink

From Todd D. Kendall:

Casual empiricism suggests that celebrities engage in more anti-social and other socially unapproved behavior than non-celebrities. I consider a number of reasons for this stylized fact, including one new theory, in which workers who are less substitutable in production are enabled to engage in greater levels of misbehavior because their employers cannot substitute away from them. Looking empirically at a particular class of celebrities – NBA basketball players – I find that misbehavior on the court is due to several factors, including prominently this substitutability effect, though income effects and youthful immaturity also may be important.

Elsewhere, here is a Kaushik Basu micro piece on the law and economics of sexual harassment.  And a more recent piece from the sociology literature.  The practice increases quits and separations, with some of the costs borne by harassment victims and not firms; given imperfect transparency, recruitment incentives may not internalize this externality.  On other issues, here is a relevant AER article.  And this piece applies an insider-outsider model.  Here is Posner (1999), perhaps he has changed his mind.  Here is work by Elizabeth Walls, from Stanford.

I see negative externalities to sexual harassment across firms and sectors, and so, contra Posner (1999) and Walls, the most just and also efficient outcome is to tolerate one explicit and transparent form of the practice in the sector of formal prostitution and otherwise to keep it away from normal business activity.  I believe such a ban boosts womens’ human capital investment, investment in firm-specific skills, aids the optimal production of status, and limits one particular kind of uninsurable risk, with all of those benefits correspondingly higher in an O-Ring or Garett Jones model of productivity.

By Ray C. Fair and Christopher Champa (pdf), here is the abstract:

Injury rates in twelve U.S. men’s collegiate sports are examined in this paper. The twelve sports ranked by overall injury rate are wrestling, football, ice hockey, soccer, basketball, lacrosse, tennis, baseball, indoor track, cross country, outdoor track, and swimming. The first six sports will be called “contact” sports, and the next five will be called “non-contact.” Swimming is treated separately because it has many fewer injuries. Injury rates in the contact sports are considerably higher than they are in the non-contact sports and they are on average more severe. Estimates are presented of the injury savings that would result if the contact sports were changed to have injury rates similar to the rates in the non-contact sports. The estimated savings are 49,600 fewer injuries per year and 5,990 fewer injury years per year. The estimated dollar value of these savings is between about 0.5 and 1.5 billion per year. About half of this is from football. Section 7 speculates on how the contact sports might be changed to have their injury rates be similar to those in the non-contact sports.

Here is NYT coverage of the piece, and an excerpt:

When he goes to Stanford football games, he [Roger Noll] said, one of the things he notices is the television production people on the sideline walking around with parabolic microphones.

“I’ve asked them why they do that,” he said. “They are catering to their audience. The audience wants to hear heads crack.”

A bit like how they soup up Planet Earth II with all kinds of phony noises for the animal movement.

Larry was in superb form, and we talked about mentoring, innovation in higher education, monopoly in the American economy, the optimal rate of capital income taxation, philanthropy, Hermann Melville, the benefits of labor unions, Mexico, Russia, and China, Fed undershooting on the inflation target, and Larry’s table tennis adventure in the summer Jewish Olympics. Here is the podcast, video, and transcript.

Here is one excerpt:

SUMMERS: Second, the VIX — people tend to underappreciate this. The volatility of the market moves very much with the level of the market. The reason is that if a company has $100 of debt and $100 of equity, and then the stock market goes up, it’s 50/50 levered.

If the stock market goes up by $100, then it has $100 of debt and $200 of equity and it’s only one-third levered. So when the stock market goes up, its volatility naturally goes down. And the stock market has gone way up over the last 10 months. That’s a factor operating to make its volatility go significantly down.

It’s also the case if you look at surprises. The magnitude of errors in the consensus estimates of company profits or the consensus estimates of industrial production or what have you, numbers have been coming in close to consensus to an unusual degree over the last few months.

I think all those things contribute to the relatively low level of the VIX, but those are more in the way of ex post explanations. If you had told me everything that was going on in the world and asked me to guess where the VIX would be, I would expect it to have been a little higher than it is right now.


COWEN: If there’s an ongoing demand shortfall, as is suggested by many secular stagnation approaches, does that mean monopoly cannot be a major economic problem because that’s from the supply side, and that the supply side constraint isn’t really binding if you think of there as being multiple Lagrangians. Forgive me for getting technical for a moment. Do you see what I’m saying?

SUMMERS: That wouldn’t have been the way I’d have thought about it, Tyler, but what you’re saying might be right. I think I’d be inclined to say that, if there’s more monopoly, there’s more money going to monopoly firms where there’s a low propensity to spend it, both because the firms don’t invest and because the owners of the firms tend to be rich or endowments that have a low propensity to spend.

So the greater monopoly power, to the extent that it exists, is one factor operating to raise savings and reduce investment which contributes to demand shortfalls and secular stagnation.

I also think that there’s likely to be less entry in competition in markets that aren’t growing rapidly than there is in markets that are growing rapidly. There’s a sense in which less demand over time creates its own lack of supply.


COWEN: What mental qualities make for a good table tennis player?

SUMMERS: Judging by my performance, qualities that I do not possess.


SUMMERS: I think a deft wrist, a certain capacity for concentration, and a great deal of practice. While I practiced intensely in the run-up to the activity, there were other participants who had been practicing intensely for decades. And that gave them a substantial advantage.


If you think you know someone who is very smart, Larry is almost certainly smarter.

There is a hot hand after all

by on September 16, 2017 at 11:21 am in Data Source, Sports | Permalink

This paper, “The Hot-Hand Fallacy: Cognitive Mistakes or Equilibrium Adjustments? Evidence from Major League Baseball,” delivers on both the theory and the empirics:

We test for a “hot hand” (i.e., short-term predictability in performance) in Major League Baseball using panel data. We find strong evidence for its existence in all 10 statistical categories we consider. The magnitudes are significant; being “hot” corresponds to between one-half and one standard deviation in the distribution of player abilities. Our results are in notable contrast to the majority of the hot-hand literature, which has generally found either no hot hand or a very weak hot hand in sports, often employing basketball shooting data. We argue that this difference is attributable to endogenous defensive responses: basketball presents sufficient opportunity for transferring defensive resources to equate shooting probabilities across players, whereas baseball does not. We then develop a method to test whether baseball teams do respond appropriately to hot opponents. Our results suggest teams respond in a manner consistent with drawing correct inference about the magnitude of the hot hand except for a tendency to overreact to very recent performance (i.e., the last five attempts).

That is from Brett Green and Jeffrey Zwiebel, via Rolf Degen.  Here are ungated versions.

Yes.  The context is female jockeys in horse racing, and so we turn to Alasdair Brown and Fuyu Yang in the Journal of Economic Behavior and Organization:


Male and female jockeys compete side-by-side in horse racing.

Betting market prices provide a window onto society’s beliefs about female ability.

Women are slightly underestimated, winning 0.3% more races than the market predicts.

Underestimation is greater in jump racing, where female participation is low.

Here is the paper link, ungated, via Michelle Dawson.

Question  What are the neuropathological and clinical features of a case series of deceased players of American football neuropathologically diagnosed as having chronic traumatic encephalopathy (CTE)?

Findings  In a convenience sample of 202 deceased players of American football from a brain donation program, CTE was neuropathologically diagnosed in 177 players across all levels of play (87%), including 110 of 111 former National Football League players (99%).

Here is the research paper, via Peter Metrinko.  Here is NYT coverage of the result.

Mr. Ferretti, 36 years old, and Mr. Lopez, 44, had enjoyed themselves under the supervision of a doctor for what some are calling a brosectomy—a vasectomy with friends in a cushy setting of couches, snacks, big-screen TV, and in some clinics, top-shelf liquor.

Here is the WSJ story.  And:

The University of Utah Health in Salt Lake City has run March Madness promotions for the past three years. It offers a vasectomy package that includes a Utah Jazz basketball ticket giveaway, goody bags and basketball-shaped ice packs. This year, its surgeons performed more than three times as many vasectomies in March compared with the average number done in the other months through May, according to the health center’s internal marketing data.

They promised us flying cars, and all we got was…

Hi guys:

I can pass along that there’s another angle to the grunts (having played a lot of tennis).  The sound of the ball hitting the racket provides useful information, particularly for a mishit or a powerful shot — because you have to move up or back quickly to cope. For years, top tennis players have used grunts and shrieks to conceal this sound from their opponents (e.g. I always thought Sharapova, and Seles years ago, were prime offenders). There’s no need for such noises as a function of effort, or events like NBA games would sound much different.  But the tennis authorities haven’t done anything about it.

In table tennis, where I have a very long involvement, the spin on the ball is tremendous in high-level play — so much so that a concealed dead ball (with no spin) is a very effective tactic because the opponent will err by responding to the spin that isn’t there. Years back, a totally dead racket covering was developed for this purpose; even worse, it tends to continue the spin so that the originator effectively gets the reverse back of what he put on the ball. A top US player with whom I grew up developed a style where he used only one side of the racket for both forehand and backhand, while frequently flipping between the spinny and dead sides of his racket that were colored the same. Players could hear the difference, however, as the dead side made a little thud when struck. His innovation was to stomp his foot on the floor each time he struck the ball (going beyond the norm of the time of just stomping on the serve). A subsequent regulatory change required rackets to have one red and one black side, to facilitate keeping track of which rubber covering is being used for a given shot.


Carl [Danner]

And here is my previous link to a new study of tennis grunts.  And Carl sends along this video for table tennis.  Sports aside, what other social practices fit this “misdirection” model?