Student Union
- By Pete Musto
Professor Offers Students Higher Grade for More Sleep
No amount of lecturing seems to persuade students to get more sleep.
But one professor uses bait they can't resist.
Michael Scullin teaches the science of sleep to psychology students at Baylor University in Waco, Texas. He lectures about physical and mental health problems caused by a lack of sleep. Those problems include difficulty focusing and controlling one's emotions, and increased risk of disease.
"When you are at your most sleep deprived is when you are least likely to be able to judge how sleepy you are, and how much that sleepiness is impacting you," Scullin says.
The U.S. Centers for Disease Control and Prevention advises adults to get at least seven hours of sleep a night to stay healthy, but more and more Americans report getting fewer than six hours of sleep per night.
His students seemed to enjoy the class, Scullin says. But when he asked if they were getting more sleep after what they learned in class, most of them said no.
So Scullin came up with a plan to get his students to sleep more: He offered them extra points on their final exam, the most important test in the class.
The plan worked better than Scullin expected. Students who slept more performed better in two different classes, and Scullin published his findings in two academic publications last November.
How did the study work?
Scullin started the experiment with his psychology students. He told them that if they agreed to sleep at least eight hours a night for the five nights before the final exam, they would get several extra credit points. But if they agreed to take part in the study and failed to get the required amount of sleep, they would lose points on the exam. The students would wear special devices that recorded their sleep data.
Only eight out of the 18 total students in that first group agreed to take part in the experiment. Yet all the students who took part performed better on the exam than those who did not, even before the extra credit points were added. On average, they earned about five points more on the exam.
Scullin decided to repeat the study with another group of 16 design students. He chose not to punish students who failed to sleep the full eight hours per night, and got the same results.
Daniel Bessesen, as associate director of the Anschutz Health and Wellness Center at the University of Colorado, researches sleep. He says Scullin's study supports the idea that sleep helps academic performance while students who cram — or stay up the night before the test trying to memorize the material — are likely worse off.
While Scullin's study fits in with other sleep research, Bessesen says for it to be more scientific, the two groups should have been studying the same subject and taking the same test. In addition, students should have been randomly chosen for sleeping or staying awake.
How to get people to sleep more
Scullin and Bessesen offer some advice on how to get more sleep each night:
- Parents, try to get enough sleep to role model good habits to children. Bessesen notes that some medical school programs require student doctors to sleep more to prevent accidents.
- Avoid looking at electronics before you fall asleep.
- Don't consume caffeinated drinks less than six hours before you go to sleep.
- Try to go to sleep at the same time every night.
- If you are lying in bed and cannot calm your mind, get out of bed and spend five to 10 minutes writing down all of your thoughts.
- If you wake up in the middle of the night and cannot fall back asleep, do not turn on the lights! Instead, get out of bed and go into another room. Wait there until you feel tired.
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International students at De Anza College in Cupertino, California, talked about culture shock in an article in La Voz News, the student newspaper.
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Read the full story here.
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- By Stella Hsu
Reports of visa checks, deportations worry Chinese STEM students in US
Geopolitical tensions and growing competition in tech between the United States and China appear to be spilling over into academia despite commitments from the world’s two biggest economies to boost people-to-people exchanges.
The United States remains the top choice for Chinese students seeking to study abroad with nearly 300,000 studying in American colleges and universities during the 2022-2023 school year. But reports of some cases that students and professors are facing extra scrutiny while passing through immigration and the deportation of others are raising concerns.
For Chen Xiaojin, a doctoral student studying semiconductor materials at a university in the Washington, D.C., metropolitan area, it has been six years since she returned to her hometown of Beijing.
At first, it was the COVID-19 pandemic that kept her from going home. But over the past two years, she has been deterred by accounts of Chinese students majoring in science and engineering being required to reapply for their visas upon returning to China.
She also says she is worried by reports over the past six months of Chinese students being deported, even at nearby Dulles Airport.
"My current research is relatively sensitive, and my boss [adviser] is getting funds from the U.S. Department of Defense, making it even more sensitive,” she told VOA. "I am afraid that I won't be able to return after I go back [to China]."
Chen says that if she did return to China, she would have to apply for a new visa.
In a report late last month, Bloomberg said it had found at least 20 Chinese students and scholars with valid visas who were deported at U.S. Customs since November and barred from reentry. The U.S. Customs and Border Protection Agency does not release relevant data.
Immigration attorney Dan Berger represented one Chinese student who was deported late last year. He tells VOA Mandarin that the student studied biological sciences at Yale University and was about to complete her doctorate.
She visited her family in China and got a new visa but was deported by customs at Dulles Airport and barred from reentering the country for five years. Berger said he did not see anything suspicious in the transcript of the conversation between the student and the customs officer.
"We have seen what seems like a pattern over the last six months of Chinese PhD students being turned around…. more than I've seen in quite a while," he said.
Matthew Brazil, a fellow at the Jamestown Foundation, said neither country seems willing to explain the situation. However, he believes that in most cases, the United States must have valid reasons for blocking visa holders from entering the country.
In some cases, the student’s background may not match what is written on the visa application. In other cases, customs agents may also find something that the State Department missed, and once they see it, they are responsible for taking action.
"I wish the Chinese side would be specific about their students who were refused entry,” he said. “The fact that both sides are mum on details and that the Chinese side is engaged with the usual angry rhetoric means that each has security concerns. And that says to me that there was good reason for the U.S. to stop these particular applicants."
Brazil also sees a connection between the entry denials and export control regulations issued by the United States in October 2022 that restrict China's ability to obtain advanced computing chips, develop and maintain supercomputers, and manufacture advanced semiconductors.
U.S. Customs and Border Protection is one of the law enforcement agencies authorized to investigate violations of export control regulations, he said.
"Beijing's intelligence agencies are known to focus attention on PRC [People's Republic of China] students and scientists headed abroad who study or work on dual-use technologies controlled under the Export Administration Act — compelling Chinese students and scientists to report on what they've learned when they return to China on holiday,” he said. “This has been true for decades."
Bill Drexel, a fellow for the Technology and National Security Program at the Center for a New American Security, said the U.S. government did find some cases where students tried to steal strategic technology for China.
"I think it would both not be surprising that they found some really questionable or incriminating evidence for some students,” he said. “It would also not be surprising if, in their hunt for really solid evidence, they also may have made some mistakes on other students.”
Drexel adds that “it’s just kind of an unfortunate fact of the time that we live in and the tactics that the CCP uses when it comes to these measures."
In a post on X in early May, U.S. ambassador to China Nicholas Burns tried to dispel concerns about visas and entry to the United States for students and scholars. In the post, he said "99.9% of Chinese students holding visas encounter no issues upon entering the United States.”
In an interview with The Wall Street Journal Monday, Burns said it is China that is making it impossible to promote people-to-people ties. Burns told the Journal that students attending events sponsored by the United States in China have been interrogated and intimidated.
He also said that since U.S. President Joe Biden and China’s leader Xi Jinping held their summit in San Francisco last year, China’s Ministry of State Security and other agencies had interfered with Chinese citizens’ participation at some 61 events.
At a regular briefing on Wednesday, Chinese Foreign Ministry spokesperson Mao Ning dismissed those accusations, saying that they did not “reflect reality" and that went against key understandings reached by both countries’ presidents in San Francisco.
“The United States, under the pretext of 'national security,' unjustifiably harasses, interrogates, and deports Chinese students in the U.S., causing them significant harm and creating a severe chilling effect,” Mao said. “The image of the United States in the minds of the Chinese people fundamentally depends on the actions of the United States itself.”
Drexel said he believes Burns’ comments about visas and students' willingness to study in the U.S. still ring true.
“On balance, it's still the case that American universities are overwhelmingly warm towards Chinese students and want them in large numbers," he said.
However, Berger, the immigration lawyer, is concerned about the chilling effect recent cases involving Chinese students could have.
"In general, we are being more careful about advising Chinese graduate students in STEM fields about traveling and letting them know that there is some small risk,” he said.
Even though the risk is small, it does seem to be real at the moment, he said.
Adrianna Zhang contributed to this report.
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