Getting stuff right is normally regarded as science’s central aim, but a new analysis has raised the existential specter that universities, laboratory chiefs and academic journals are contributing to the “natural selection of bad science.”
To thrive in the cutthroat world of academia, scientists are incentivized to publish surprising findings frequently, the study suggests — despite the risk that such findings are “most likely to be wrong.”
“As long as the incentives are in place that reward publishing novel, surprising results, often and in high-visibility journals above other, more nuanced aspects of science, shoddy practices that maximize one’s ability to do so will run rampant,” said Paul Smaldino, a cognitive scientist who led the work at the University of California, Merced.
The paper comes as psychologists and biomedical scientists are grappling with an apparent replication crisis, in which many high-profile results have been shown to be unreliable.
Observations that striking a power pose will make you feel bolder, smiling makes you feel happy or that placing a pair of “big brother” eyes on the wall will protect against theft have all failed to stand up to replication.
Sociology, economics, climate science and ecology are other areas likely to be vulnerable to the propagation of bad practice, Smaldino said.
“My impression is that, to some extent, the combination of studying very complex systems with a dearth of formal mathematical theory creates good conditions for low reproducibility,” he said. “This doesn’t require anyone to actively game the system or violate any ethical standards. Competition for limited resources — in this case jobs and funding — will do all the work.”
Drawing parallels with Charles Darwin’s classic theory of evolution, Smaldino claims that various forms of bad scientific practice flourish in the academic world, much like hardy germs that thwart extermination in real life.
One scientific “germ” identified in the paper is the problem of “low statistical power.”
Typically this refers to findings in human behavior, health or psychology based on data from too small a sample of people to be able to draw any statistically sound conclusions.
Despite red flags being consistently raised on the issue in the scientific community, the latest analysis, published in the journal Royal Society Open Science, shows that sample sizes in studies have not increased during the past 50 years.
Another problem is the publication of “false positive” results, where random noise in the data appears to be a real phenomenon of interest. Since the failure to reproduce a result rarely makes a real dent in a laboratory’s prestige, the reliability of results is only “weakly selected for,” the study suggests.
Smaldino cites an experiment by US psychologist Daryl Bem, who purported to show that undergraduates could predict the future and published the result in a prestigious journal.
“What he found was the equivalent of flipping a bunch of pennies, nickels and quarters, asking students to guess heads or tails each time, and then reporting that psychic abilities exist for pennies, but not nickels and quarters, because the students were right 53 percent of the time for the pennies, rather than the expected 50 percent. It’s insane,” Smaldino said. “Bem used exactly the same standards of evidence that all social psychologists were using to evaluate their findings and if those standards allowed this ridiculous a hypothesis to make the cut, imagine what else was getting through.”
Akin to the survival of the fittest model in nature, Smaldino argues that laboratory chiefs who publish most frequently in high-profile journals will attract more funding and produce more “progeny” (graduate students), who will eventually run labs of their own, potentially taking bad scientific habits with them.
Vince Walsh, a professor of neuroscience at University College London, said he was not convinced of the existence of a replication crisis, but that the paper raised valid concerns about the culture of science.
“I agree that the pressure to publish is corrosive and anti-intellectual. Scientists are just humans and if organizations are dumb enough to rate them on sales figures, they will do discounts to reach the targets, just like any other salesperson,” Walsh said.
“The more people who are aware of the problems in science, and who are committed to improving its institutions, the sooner and more easily institutional change will come,” Smaldino said.
Could Asia be on the verge of a new wave of nuclear proliferation? A look back at the early history of the North Atlantic Treaty Organization (NATO), which recently celebrated its 75th anniversary, illuminates some reasons for concern in the Indo-Pacific today. US Secretary of Defense Lloyd Austin recently described NATO as “the most powerful and successful alliance in history,” but the organization’s early years were not without challenges. At its inception, the signing of the North Atlantic Treaty marked a sea change in American strategic thinking. The United States had been intent on withdrawing from Europe in the years following
My wife and I spent the week in the interior of Taiwan where Shuyuan spent her childhood. In that town there is a street that functions as an open farmer’s market. Walk along that street, as Shuyuan did yesterday, and it is next to impossible to come home empty-handed. Some mangoes that looked vaguely like others we had seen around here ended up on our table. Shuyuan told how she had bought them from a little old farmer woman from the countryside who said the mangoes were from a very old tree she had on her property. The big surprise
The issue of China’s overcapacity has drawn greater global attention recently, with US Secretary of the Treasury Janet Yellen urging Beijing to address its excess production in key industries during her visit to China last week. Meanwhile in Brussels, European Commission President Ursula von der Leyen last week said that Europe must have a tough talk with China on its perceived overcapacity and unfair trade practices. The remarks by Yellen and Von der Leyen come as China’s economy is undergoing a painful transition. Beijing is trying to steer the world’s second-largest economy out of a COVID-19 slump, the property crisis and
Ursula K. le Guin in The Ones Who Walked Away from Omelas proposed a thought experiment of a utopian city whose existence depended on one child held captive in a dungeon. When taken to extremes, Le Guin suggests, utilitarian logic violates some of our deepest moral intuitions. Even the greatest social goods — peace, harmony and prosperity — are not worth the sacrifice of an innocent person. Former president Chen Shui-bian (陳水扁), since leaving office, has lived an odyssey that has brought him to lows like Le Guin’s dungeon. From late 2008 to 2015 he was imprisoned, much of this