Category: Data Source

Detroit fact of the day

Among cities with more than 500,000 residents, Detroit has the
safest drivers, with accident rates that are 20 percent below the
national average.

For cities with more than 1 million residents, Phoenix has the
safest big-city commuters, with accident rates about equal to the
national average.

Here is much more, Philadelphia is a disaster and L.A. isn’t so safe either.  I wonder to what extent these rankings simply proxy for traffic density.  Here are some charts.  Overall Sioux Falls, Tucson, and El Paso seem to be relatively safe cities for driving.

Who are the aggressive drivers?

Watch out for cars with bumper stickers.

That’s the surprising conclusion of a recent study by Colorado State University
social psychologist William Szlemko. Drivers of cars with bumper
stickers, window decals, personalized license plates and other
"territorial markers" not only get mad when someone cuts in their lane
or is slow to respond to a changed traffic light, but they are far more
likely than those who do not personalize their cars to use their
vehicles to express rage — by honking, tailgating and other aggressive
behavior.

It does not seem to matter whether the messages on the stickers are
about peace and love — "Visualize World Peace," "My Kid Is an Honor
Student" — or angry and in your face — "Don’t Mess With Texas," "My
Kid Beat Up Your Honor Student."

…Drivers who do not personalize their cars get angry, too, Szlemko and
his colleagues concluded in a paper they recently published in the
Journal of Applied Social Psychology, but they don’t act out their
anger. They fume, mentally call the other driver a jerk, and move on.

"The more markers a car has, the more aggressively the person tends
to drive when provoked," Szlemko said. "Just the presence of territory
markers predicts the tendency to be an aggressive driver."

Here is much more, with some interesting theory in the article as well.  Apparently bumper stickers indicate that the driver has a particular, and potentially dangerous, sense of territoriality.

Popcorn fact of the day

[Richard] McKenzie did a fair amount of real-world research on the popcorn front,
and his most important finding (as far as I’m concerned) is that if
you’re in a cinema which gives you a choice between buying a medium bag
of popcorn and a large tub of popcorn, there’s a greater-than-50%
chance that the medium bag will actually contain more popcorn than the large tub.

That’s from Felix Salmon.

Japanese retailing is more efficient than most people think

Kyoji Fukao,
professor at Hitotsubashi University’s Economic Research Institute,
thinks so too. The team he heads provides much of the Japanese data
that go into international comparisons. He argues that the usual
measures of service sector efficiency – value added per man hour and
total factor productivity, which incorporates capital and labour inputs
– are crude and hard to compare across borders.

He cites Japan’s
retail sector, regularly branded as inefficient. The basic measure of
retail-sector productivity is how much of a product an employee can
shift in an hour. On this measure, Germany does well. That turns out to
be because of restricted opening hours, which oblige customers to make
hefty purchases in one go. Japan does badly. Cavernous US superstores
do better than cramped noodle or tofu shops. Japan also has a dense
network of convenience stores on almost every city block, open 24
hours, allowing people to shop whenever they want. This makes them
inefficient, since purchases are less concentrated.

No allowance
is made, either, for the fact that Japanese shops tend to be within
walking or, at most, cycling distance. Figures do not capture the
inconvenience of having to travel, or the externalities associated with
long shopping expeditions: traffic accidents, pollution, road
maintenance.

Here is the full article, interesting throughout.  The quality of Japanese service, by the way, is miles ahead of anywhere else (though stores don’t like to take returns) and those subjective pleasures of the shopping experience don’t get picked up by the numbers either.  I can’t imagine how a Japanese would feel moving to Germany or Austria.

Does the CPI understate inflation?

You’re hearing this a lot these days, most of all from Kevin Phillips.  David Leonhardt sets the record straight.  Here is one excerpt:

During the 1980s and 1990s, though, did you ever stop and marvel at what a small share of your paycheck you were spending at the supermarket? I didn’t. I also didn’t really notice that gas cost less in the late 1990s than it had in the 1980s. Yet lately, every time my wife or I pass a new benchmark for filling up our tank – $40, $50 and now $60 – we have a conversation about it.

Price increases are simply more noticeable – more salient, as psychologists would say – than price decreases. Part of this comes from the notion of loss aversion: human beings dislike a loss more than they like a gain of equivalent size. If you have to sell your house for less than you bought it for, you’re really unhappy. You hate that ground chuck now costs $2.83 a pound, but you didn’t notice that oranges are 31 percent cheaper than they were a year ago.

…The price of major appliances has been flat over the last year. Furniture is 1 percent less expensive. A decade ago, a basic four-door Toyota Corolla LE cost $16,018, according to the company. The 2009 basic model costs $16,650, and it’s a safer, more powerful, more fuel-efficient car than its predecessor.

To top it all off, most people don’t buy any of these items very often. “People tend to remember things they do frequently,” says Stephen Cecchetti, an economist at Brandeis University who studies inflation. “And what do you buy more frequently than gas and food?”

Why are gun owners so happy?

Arthur Brooks reports:

Who are all these gun owners? Are they the uneducated poor, left
behind? It turns out they have the same level of formal education as
nongun owners, on average. Furthermore, they earn 32% more per year
than nonowners. Americans with guns are neither a small nor downtrodden
group.

Nor are they "bitter." In 2006, 36% of gun owners said they were "very
happy," while 9% were "not too happy." Meanwhile, only 30% of people
without guns were very happy, and 16% were not too happy.

In 1996, gun owners spent about 15% less of their time than nonowners
feeling "outraged at something somebody had done." It’s easy enough in
certain precincts to caricature armed Americans as an angry and
miserable fringe group. But it just isn’t true. The data say that the
people in the approximately 40 million American households with guns
are generally happier than those people in households that don’t have
guns.

The gun-owning happiness gap exists on both sides of the political
aisle. Gun-owning Republicans are more likely than nonowning
Republicans to be very happy (46% to 37%). Democrats with guns are
slightly likelier than Democrats without guns to be very happy as well
(32% to 29%). Similarly, holding income constant, one still finds that
gun owners are happiest.

By the way, if you are curious, I have never even touched a gun.

Addendum: Arthur has a new (and very good) book out, Gross National Happiness.

The safety of elevators

Nonetheless, elevators are extraordinarily safe–far safer than cars, to
say nothing of other forms of vertical transport. Escalators are scary.
Statistics are elusive…but the claim, routinely advanced by elevator professionals,
that elevators are ten times as safe as escalators seems to arise from
fifteen-year-old numbers showing that, while there are roughly twenty
times as many elevators as escalators, there are only a third more
elevator accidents. An average of twenty-six people die in (or on)
elevators in the United States every year, but most of these are people
being paid to work on them. That may still seem like a lot, until you
consider that that many die in automobiles every five hours. In New
York City, home to fifty-eight thousand elevators, there are eleven
billion elevator trips a year–thirty million every day–and yet hardly
more than two dozen passengers get banged up enough to seek medical
attention. The Otis Elevator Company, the world’s oldest and biggest
elevator manufacturer, claims that its products carry the equivalent of
the world’s population every five days.

And I like this passage:

Two things make tall buildings possible: the steel frame and the safety
elevator. The elevator, underrated and overlooked, is to the city what
paper is to reading and gunpowder is to war. Without the elevator,
there would be no verticality, no density, and, without these, none of
the urban advantages of energy efficiency, economic productivity, and
cultural ferment.

Here is the article, interesting throughout.

Income per natural

It is easy to learn the average income of a resident of El Salvador or Albania. But there is no systematic source of information on the average income of a Salvadoran or Albanian. In this new working paper, research fellow Michael Clemens and non-resident fellow Lant Pritchett create a new statistic: income per natural – the mean annual income of persons born in a given country, regardless of where that person now resides…Almost 43 million people live in a group of countries whose income per natural collectively is 50 percent higher than GDP per resident. For 1.1 billion people the difference exceeds 10 percent.

The pointer is from Will Wilkinson, here is the paper itself.  By the way, can you guess the country with the highest income per natural?  It’s the United States (ahem), with Norway and Luxembourg close behind.  Scroll to pp.34-35 of the paper for a full list.  Bermuda does surprisingly well.  Guyana has the biggest difference between income per capita and income per natural, at over 100%.