How greedy are you?<\/p>\n
Dylan Selterman teaches undergraduate psychology courses at the University of Maryland. His students always perk up when he poses this question: Do you want two extra-credit points on your term paper, or 6 points?<\/p>\n
He tells his students that the extra-credit offer is to illustrate the interconnectedness of choices individuals make in communities. Because there is a catch to his offer – if more than 10% of the student chose 6 points, all the students get zero points.<\/p>\n
The exercise was inspired by a talk given 50 years ago by an ecologist named Garrett Hardin. Hardin\u2019s topic was what he called \u201cthe tragedy of the commons.\u201d A common is a pasture that all the villagers shared. Every New England town has a vestige of one near their center. The tragedy is that if each individual only thinks of themselves and puts too many sheep in the commons, the pasture is soon destroyed and no one benefits from it.<\/p>\n
And so Selterman offers his extra points on the final paper to see if they can control their personal greed so that everyone comes out ahead. Maybe it is too severe to call it greed – getting more points to help your grade is strategic. It makes sense. But if everyone does it, the pump runs dry.<\/p>\n
What do the students choose? After eight years and dozens of classes, only one, a single one, got the two extra points. In all the others, more than 10% chose the six points for themselves.<\/p>\n
For most of the students, this was very frustrating. So Selterman came up with a tweak – he added the option of choosing zero points. If someone chooses zero, they get no added points. In addition, someone who chose 6 points is canceled out. So the group is more likely to win their 2 extra points each. But since you choose the zero option, you get no points. (That six-pointer you bumped doesn\u2019t either.) The zero-point option is self-sacrificial; students forgo points for themselves in order to help the group by restraining those who take too much.<\/p>\n
Usually only a few of his students each semester choose the zero-point option, but sometimes that\u2019s all it takes. About half of his classes now win the 2 extra points because a few self-sacrificers balance out enough greedy ones. If you were in that class, how many points would you choose?<\/p>\n
Self-sacrifice is at the heart of Christianity. Jesus himself exemplified it. He was the only perfect human, so he didn\u2019t need saving. But he sacrificed himself so we could be saved.<\/p>\n
Here is the rub – he expects us to sacrifice as well, to deny ourselves and take up our cross every day.<\/p>\n
_________<\/p>\n
Adapted by Rev. David Holwick from this article in the National Geographic, June 2018:<\/p>\n
“What a Simple Psychological Test Reveals About Climate Change: If everyone\u2019s success depended on it, would you share \u2014 or be selfish?”
\nby Dylan Selterman; < https:\/\/www.nationalgeographic.com\/magazine\/2018\/06\/embark-essay-tragedy-of-the-commons-greed-common-good\/ >.<\/p>\n
Selterman’s full article:<\/p>\n
I teach undergraduate psychology courses at the University of Maryland, and my classes draw students with diverse interests. But every one of them perks up when I pose this question: Do you want two extra-credit points on your term paper, or six points?<\/p>\n
I tell my students that the extra-credit offer is part of an exercise illustrating the interconnectedness of choices individuals make in communities. I explain that the exercise was inspired by an ecologist named Garrett Hardin and an address that he delivered 50 years ago this summer, describing what he called \u201cthe tragedy of the commons.\u201d Hardin said that when many individuals act in their own self-interest without regard for society, the effects can be catastrophic. Hardin used the 19th-century convention of \u201cthe commons\u201d \u2014 a cattle-grazing pasture that villagers shared \u2014 to warn against the overexploitation of communal resources.<\/p>\n
I\u2019m hoping that my students will grasp the connections between the classroom exercise, Hardin\u2019s ideas, and our planet\u2019s most pressing problems (including climate change). I allow them to choose between two points or six points of extra credit \u2014 but there\u2019s a catch. I stipulate that if more than 10 percent of the class members choose six points, no one gets any points. The extra-credit points are analogous to water, fuel, grazing pasture (from Hardin\u2019s analysis), or any natural resource.<\/p>\n
According to some free market economic theories, if everyone strives for maximum personal benefit, then societies will thrive. By this logic the student\u2019s rational choice would be to pick six points, just as the shepherd\u2019s rational choice would be to use as much grazing pasture as possible. And those who maximize personal consumption aren\u2019t greedy \u2014 they\u2019re strategic.<\/p>\n
But when everyone chooses this path, the common resource is overtaxed, and societies end up with overharvesting, water shortages, or climate change.<\/p>\n
A possible solution seems simple: If everyone just moderated their consumption, we\u2019d have sustainability. As many of my students say, \u201cIf everyone chooses two points, we\u2019ll all get the points.\u201d And yet, for the first eight years I used this exercise, only one class \u2014 of the dozens I taught \u2014 stayed under the 10 percent threshold. All the other classes failed.<\/p>\n
This exercise was developed more than 25 years ago. Professor Steve Drigotas of Johns Hopkins University had been using it for some time when he administered it to me and my classmates in 2005. My class failed too \u2014 and I, who had chosen two points, was incredibly frustrated with my peers who had chosen six.<\/p>\n
In 2015 one of my students tweeted about the exercise \u2014 \u201dWHAT KIND OF PROFESSOR DOES THIS\u201d \u2014 and his lament went viral. People around the globe weighed in: Does so many people choosing six points mean it\u2019s human nature to be greedy and selfish?<\/p>\n
TEST-TAKERS<\/p>\n
Dylan Selterman teaches students about the tragedy of the commons with this extra-credit exercise:<\/p>\n
Choose zero, two, or six points to be added to your final paper grade. If more than 10 percent of you choose six points, no one will receive any points. If you choose zero points, you cancel out one of the six-point choosers, who will receive no points.<\/p>\n
Actually most people aren\u2019t. But it\u2019s very tricky to get people to cooperate, especially in large groups of complete strangers. After all, if someone else is taking more for themselves (running more water or choosing six points), why shouldn\u2019t I? But if we all think this way, eventually we\u2019ll all lose.<\/p>\n
Hardin suggested that education might make a difference \u2014 that if we teach people about the consequences of taking too much, they might not. I\u2019ve been skeptical about this idea. When my student\u2019s tweet went viral, some colleagues said that I wouldn\u2019t be able to use the exercise again (because students would already know how it works). I laughed. If it were only that easy! My suspicion was justified. Even after the exercise got wide exposure, my students still failed the challenge to get the extra-credit points.<\/p>\n
Despite this I remain optimistic. After all, most of my students, about 80 percent, choose two points \u2014 just as most people choose to cooperate in real-world situations. Most of us want to do what\u2019s right. But that alone won\u2019t solve our problems, so we need to think creatively and use behavioral science to find solutions.<\/p>\n
In 2016 I decided to change things up. In hopes of finding a way to increase cooperation, I drew from the scientific literature on social groups and introduced a third option: Students could choose two points, six points \u2014 or zero points. That\u2019s right. Zero. Why would anyone do that? Well, for each student who chose zero points, one of the six-point choosers (selected randomly) would lose everything, reducing the total number of six-point choosers by one.<\/p>\n
The zero-point option is self-sacrificial; students forgo points for themselves in order to help the group by restraining those who take too much. In behavioral experiments this type of action is called altruistic punishment, a term coined by economists Ernst Fehr and Simon G\u00e4chter. Their research documented people willingly giving up some of their own resources in order to punish those who behave selfishly in a group context \u2014 and doing so in the belief that every individual profits from increased cooperation.<\/p>\n
Usually a few of my students each semester choose the zero-point option, and sometimes that\u2019s all it takes. Just a handful of people can make a huge difference \u2014 that is, a few self-sacrificing students can bring down the total number of six-point choosers to below the 10 percent threshold. This additional element has dramatically increased cooperation in my courses. Now roughly half my classes receive the extra-credit points. In my opinion this is a remarkable turnaround. And some of my classes have done this without anyone actually choosing the zero-point option; simply knowing it was available was enough to increase cooperation.<\/p>\n
Though this type of solution may work on the small scale of a classroom, won\u2019t we need much larger action to curb global problems like climate change? Yes, but the principle is the same\u2013it\u2019s about collective action and reducing overconsumption. For example, recently I started volunteering with Citizens\u2019 Climate Lobby (CCL), an organization that advocates for a policy known as carbon fee and dividend. This plan would put a steadily rising fee on fossil fuels and distribute the money raised back to American households (to protect families against rising costs). Ultimately this would reduce fossil fuel consumption by making this type of energy more expensive to use \u2014 so reducing consumption would be better for both our wallets and the environment. At CCL, volunteers meet with lawmakers and conduct outreach to the community. Through our efforts \u2014 again, collective action \u2014 we gain allies in Congress and the public. By early this year the House\u2019s bipartisan Climate Solutions Caucus had 70 members (half Democrats and half Republicans) from states across the country.<\/p>\n
As I write these words, I\u2019m sitting next to my three-month-old daughter, Amelia. Though the planet faces daunting problems, I\u2019m determined to help her have a bright future \u2014 so I have to believe that action by even a few people can make a significant difference. A few students can help an entire class of hundreds gain a leg up in the course. A few people who recycle or compost can have a contagious effect on others\u2019 lifestyles. A few politicians\u2019 votes can alter national and international policies that affect millions.<\/p>\n
The challenge that Garrett Hardin described 50 years ago remains today: Our survival depends on each of us and all of us conserving the commons. I choose to remind myself of that with these wise and hopeful lines from the Beatles: \u201cAll the world is birthday cake \/ so take a piece \/ but not too much.\u201d<\/p>\n
________<\/p>\n
In his class in fall semester 2017, how did students respond? Read on.<\/p>\n
ZERO POINTS<\/p>\n
Devin Porter, 21, sociology major<\/p>\n
\u201cI took the class to get something out of it, not necessarily for the grade. When we didn\u2019t get the extra credit, I felt bad for the people who really needed it, but I wasn\u2019t too surprised. People who chose two made the obvious choice \u2014 everyone eats. People who chose six thought they could get away with it.\u201d<\/p>\n
TWO POINTS<\/p>\n
Robin Bachkosky, 19, nursing major<\/p>\n
\u201dI thought I made a pretty beneficial choice for the class and myself, one that wouldn\u2019t necessarily put the class to any disadvantage but would give me some extra credit. I was a little disappointed that I didn\u2019t get any extra credit just because some of the other kids were selfish and weren\u2019t satisfied with two points.\u201d<\/p>\n
SIX POINTS<\/p>\n
Gunleen Deol, 18, information systems and psychology major<\/p>\n
\u201dI thought that the majority of people would choose two and felt that the rational decision for me to make would be the one that maximizes my personal benefit, which would be six. Considering how my choice affected the rest of the class made me wish that I had chosen two instead.\u201d<\/p>\n
The class failed the exercise.<\/p>\n
________<\/p>\n
Dylan Selterman is a lecturer at the University of Maryland, College Park, and former editor in chief of the psychology magazine In-Mind . He lives in Washington, D.C.<\/p>\n","protected":false},"excerpt":{"rendered":"
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