Category: Tsinghua University

Assorted Links

Seth Roberts5 Comments
  • One of my Tsinghua American colleagues writes an op-ed: “China wants you. Job prospects are abundant.”
  • Robert Anton Wilson’s skepticism about skeptics. “Those people claim to be rationalists, but they’re governed by such a heavy body of taboos. They’re so fearful, and so hostile, and so narrow, and frightened, and uptight and dogmatic. . . . None of them ever says anything skeptical about the AMA, or about anything in establishment science or any entrenched dogma.” I agree. They should be called one-way skeptics.
  • Excellent Vanity Fair article about Occupy Wall Street. Better than The New Yorker‘s article covering similar stuff.
  • The many side effects of statins. I am impressed by the new way of learning about drug side effects.

Thanks to Ryan Holiday and Gary Wolf.

Chinese Medicine As Now Practiced

Seth Roberts8 Comments

In America, I often hear praise for “Chinese Medicine”. By this they mean Traditional Chinese Medicine, which includes acupuncture and techniques that harness hormesis. I tend to agree. Medicine as now practiced in China is a different story.

Last night, I had dinner with some of my students. I asked them what their parents thought of their decision to major in psychology. One of them had a surprising answer. Her mom was happy that she was majoring in psychology because among the required courses was a human anatomy and physiology class. If her daughter took this class, her mom believed, it would be harder for doctors to cheat us.

Chinese doctors “cheating” patients is a big problem, in other words. They prescribe drugs that don’t work, said my student, and perform useless surgeries. Little different than Western medicine, except perhaps the drugs are less dangerous. Just as in Western medicine, drug reps try to bribe doctors to request their drugs. Unlike Western medicine, doctors steal the drugs of hospitalized patients, my student said, which they then sell. After a friend of mine was badly burned, she had (wisely) turned down the recommendation of a skin transplant. This angered her doctor, who would have made money from the operation. Later, when he changed her bandages, he did so roughly, which was very painful. Revenge.

“Don’t see the doctors at Tsinghua hospital [the campus hospital],” said my student. She had had a bad experience. She had gotten injured and gone to the hospital. She had had to wait half an hour to see a doctor; who had taken a mere 30 seconds to prescribe a cream that did almost nothing. That evening I watched The Poseidon Adventure. A doctor visits a sick woman in bed in her cabin. After a long wait, he gives her cursory treatment.

HUSBAND (to doctor) Hold it, hold it. You mean to tell me we had to wait all this time just for you to come in here and kiss her off with a couple of pills and some crap about staying in bed? How do you know she’s just seasick? Look at her! It could be something else! You didn’t even examine her.

Same complaint.

“We are Heroes, They are Villains”: My Brilliant Students

Seth Roberts10 Comments

At Tsinghua University, which is like a Chinese MIT, I am teaching a small class (25 students) called Frontiers of Psychology. It is required of freshmen psychology majors. There are a few students from other majors. So many of my students do brilliant work that it is hard to keep track. For example, two classes ago I started having presentations (short talks related to the reading). In the very first one, a student talked about her dysmenorrhea and self-experimentation to stop it. Later, during a discussion of how to give a talk, another (female) student said, “I could not have given such a talk.” “That’s a compliment, right?” I said. “I don’t know,” she said. Which is only to say what a radical and stunning talk it was.

For this week’s class I assigned several readings, from which students chose one. The shortest and most popular paper, by Joshua Knobe, a Yale professor of philosophy, was about judgments of intentionality. Knobe showed subjects various scenarios and asked them whether the side effects of a action described in the scenario should be considered intentional or not. Changing one word had a big effect. Knobe concluded that we tend to see bad side effects as intentional, good side effects as unintentional. I assigned it because the effect of changing one word was large and I liked the source of data (“Subjects were 78 people spending time in a Manhattan public park”).

Here is one student’s comment:

When I was in primary school, we had a very kind English teacher who was quite close to me. After she left school, she sent some photos to me and I found it a great honor to deliver them to my classmates. Later on, a math teacher got married and she gave another pupil some sweets to deliver the class. I felt unpleasant since not every student could get a sweet. I thought it unjust.

However, in both cases, photos and sweets, there weren’t enough for the whole class. The only difference was who passed them out. When I did, the main issue I cared about was “I’m the one to deliver them”; in the other case, “Why can’t everyone get one?”

She titled her comment “We are the Heroes, They are the Villains”. Her point was that Knobe’s results could be explained by the idea that we slant our judgments of others and ourselves to make them look worse and us look better — an explanation that Knobe didn’t consider.

Knobe isn’t the only one who didn’t think of it. Other students proposed other plausible explanations. But I think the “we are heroes” explanation is quite plausible because three other students made the same point in other ways. One of them repeated a story from a test preparation book:

A teacher had a student do ten math problems on the board. Then she asked another student to describe what he saw. “Two of the answers are wrong,” he said. “What about the eight correct answers?” said the teacher.

Not a true story but surely based on actual events. Another student told of the time her teacher had made her push her fellow students to exercise for an half-hour per day. The students complained to her about their loss of time. Later, however, her class had finished first in a physical competition — much better than usual. Her classmates did not give her any credit for this.

To emphasize how unobvious this idea is, here is what two professors make of Knobe’s results:

This asymmetry in responses between the ‘harm’ and ‘help’ scenarios, now known as the Knobe effect, provides a direct challenge to the idea of a one-way flow of judgments from the factual or non-moral domain to the moral sphere. ‘These data show that the process is actually much more complex,’ argues Knobe.

My students disagree. Their proposed explanations, such as the “we are heroes” idea, were not “much more complex”.

I believe they have noticed a broad truth about human nature that has escaped many psychologists, not just Knobe. In this excerpt from his new book, my former colleague Danny Kahneman describes what he calls “the illusion of validity”: personality judgments were considered more predictive than they actually were by the people who made them. Could this be another example of “we are heroes”? The “we are heroes” idea also explains the Lake Wobegone Effect: Most people consider themselves above average. The technical name for this is illusory superiority. The Wikipedia article about illusory superiority does not mention the Knobe Effect and vice-versa. In this important aspect of human nature, professors (including me) have had trouble seeing that the trees make a forest.

Public Speaking Advice From My Students

Seth Roberts7 Comments

In the Frontiers of Psychology class I teach at Tsinghua (Monday 3:20-4:55, Teaching Building 6, Room A113, visitors welcome) , the students will give several presentations each class period. So I decided to assemble a list of advice. I came up with Items 1-3, the students came up with the rest.

  1. Give a presentation that you would like to hear. Don’t worry about following a formula.
  2. Make your points by telling stories. Don’t just say “X is true”. Tell a story that will make your listeners think that X is true.
  3. Stay within the allotted time (e.g., 5 minutes). In real life — presentations at scientific conferences, for example — most presentations are too long. Listeners rarely like this. They think the speaker is selfish. If one person speaks too long, this usually means that other speakers will have less time to speak.
  4. Don’t read your talk.
  5. Use simple, spoken English. Don’t speak fast
  6. Smile and use body language to connect with the audience.
  7. Pause before the most important points.
  8. Ask questions to attract attention.
  9. Show the big structure of your talk.
  10. When telling a story, don’t go far from the point of the story (e.g., with unnecessary details)

To me, the most interesting item is #8 (ask questions). For example, instead of saying “Let us begin” I can say “Shall we begin?” Which is certainly an improvement over coughing, which is what one student said was the usual way officials began talks.

For example, which phrasing works better?

Why does question-asking work? I asked my students.

I asked my students why question-asking works.

The first way (“Why does”) grabs my attention more than the second (“I asked”). I did ask my students why it works. One said that when you hear a question you automatically try to answer it. I cannot do better than that. I suppose we notice questions much like we notice loud noises.

First Day of Class 2011

Seth Roberts6 Comments

Yesterday was the first day of one of my Tsinghua classes. It has about 25 students. I asked each of them to say their favorite book in English. Several were mentioned twice: Pride and Prejudice (mentioned three times), Harry Potter, Catcher in the Rye, The Little Prince, and — this surprised me — The Secret. The last student to answer this question said her favorite book was Lolita. The class oohed. Last year a student said his favorite book was Ulysses. I said my favorite book was Cities and the Wealth of Nations. (A close second is Totto-Chan.)

I said the class would have three underlying principles: (a) Every student is different. (b) The best way to learn is to do. (c) Reading group. Two years ago, a Tsinghua engineering student started a reading group to read some famous Chinese book. He put a sign-up sheet in the library. The idea spread and now there are maybe ten reading groups, which meet weekly. It’s a alternative and successful educational system, they must be doing something right. To try to learn from their success, I am going to imitate their most obvious feature, which is a presentation about the week’s reading. For the coming week I asked for volunteers to give 5-minute presentations about the reading assignment. I said that if you gave a presentation, you wouldn’t have to do the regular homework assignment (commenting on the reading) for two weeks. Three students volunteered. After class, as I was leaving, one of the volunteers came up to me. She wanted to do the homework anyway, she said. She had volunteered to do a presentation “to exercise my bravery”.

The Future of China

Seth Roberts5 Comments

Recently I had dinner with two Tsinghua students I advise.

ME Do you know what “science fiction” is?

BOTH OF THEM Yes.

ME I have an idea for a science-fiction story. Five years from now, Tsinghua and Beida [Beijing University] students get together and decide to change the government. What do you think?

They were amused by this idea. However, here’s what they said:

BOTH OF THEM Where’s the science?

I explained that science fiction often takes place in the future.

 

Unexpected Christmas Presents

Seth Roberts2 Comments

This year I got two:

1. I taught a class about R and data analysis. On Christmas, one of my students wrote, “Thanks for what you taught us on the class. I love your class. I learnt a lot!” I hadn’t taught it before. A few weeks ago I had been abashed to discover a midterm exam from Phil Spector’s R class at Berkeley. I know Phil and like and respect him. His students had learned a lot more than mine, it seemed. I had consoled myself by thinking that I couldn’t answer some of the questions.

2. Cleaning a cupboard, also on Christmas, I found a “gift” derived from buying a water heater in March. (Buy the water heater, get the “gift”.) It looked like an ordinary glass teapot, which is why I had put it in semi-storage. When I opened the box I discovered it wasn’t. It has a basket where you put the tea and hot water; when the tea is ready you press a button that releases the water into the bottom of the teapot, stopping the brewing. I drink a lot of tea. A month ago I barely knew these things existed. Then I bought one and thought it was wonderful — but small. The uncovered one is the perfect size.

Rich and Poor Students: How to Distinguish

Seth Roberts2 Comments

At Tsinghua University, there is a great range of wealth among students. Some are from very rich families, some from very poor. I asked a friend how to distinguish rich students and poor ones.

“At the student store, rich students buy things that cost more than 15 yuan [2 dollars],” she said.

I asked another student the same question.

“By their shoes,” he said, “especially sports shoes.” Poor students wear Chinese brands you’ve never heard of. Rich students wear American brands.

Like my friend’s answer, this surprised me. At the Beijing Zoo, I paid $10 for Nike shoes that cost $100 in America. Yet when visiting America, Chinese people I know have bought Nike shoes, because genuine Nike cost less in America than in China. So the American shoes of the rich students are probably genuine (> $100) and the Chinese-brand shoes of the poor students cost less than $10 ($5?).