Tag Archives: University of Virginia

Most psychology studies can’t be replicated – and this is a huge problem

Numerous academic journals often post intriguing and challenging psychological studies – but according to a new, massive review, we should take those studies with a big grain of salt. A four-year project by 270 researchers attempted to replicate 100 experiments published in three of the most prestigious journals; only 36 produced similar results.

Social sciences have taken quite a “beating” in recent years: one of the most prolific authors was caught fabricating data, leading to more than 50 retracted papers – most of them from top level journals. Then, one of the rising stars of social science also manipulated data on how homosexuals are regarded, and faking scientific data seems to be done industrially in China. These events, along with many others, led to the development of the The Reproducibility Project: Psychology, led by Brian Nosek of the University of Virginia.

Most studies didn’t held up.

“Less than half — even lower than I thought,” said Dr. John Ioannidis, a director of Stanford University’s Meta-Research Innovation Center, who once estimated that about half of published results across medicine were inflated or wrong. Dr. Ioannidis said the problem was hardly confined to psychology and could be worse in other fields, including cell biology, economics, neuroscience, clinical medicine, and animal research.

Reproducing a study’s results lies at the very core of science. After all, if a study doesn’t produce reproducible results, then what value does it have? What confidence can you have in its data? Well, things often aren’t as straightforward as this, and free will often makes it impossible to replicate environments, but generally speaking, when a study and a verification study don’t add up, there are three options: either study A was wrong, study B was wrong, or there were subtle differences between how study A and study B were done that affected the outcome. Just think about it – even today, almost 100 years later, people are still testing for Albert Einstein’s theory of relativity, even though it’s the backbone of modern physics. This doesn’t necessarily mean that the science is wrong.

Cody Christopherson of Southern Oregon University comments:

“This project is not evidence that anything is broken. Rather, it’s an example of science doing what science does,” says Christopherson. “It’s impossible to be wrong in a final sense in science. You have to be temporarily wrong, perhaps many times, before you are ever right.”

Psychology is an especially difficult area to reproduce studies, but this raises a major problem. In order to succeed in academia, you need to publish new stuff, stuff that no one’s ever tried, even though often, everyone would be better of if you’d double check something that someone has already done.

“To get hired and promoted in academia, you must publish original research, so direct replications are rarer. I hope going forward that the universities and funding agencies responsible for incentivizing this research—and the media outlets covering them—will realize that they’ve been part of the problem, and that devaluing replication in this way has created a less stable literature than we’d like.”

In other words, there are two things we should be doing. First of all, we should be taking these studies with a grain of salt; let’s wait for results to be confirmed and double checked by others, and second: let’s encourage others to do so! We’re not only giving out perverse incentives for some research, but we’re eliminating valid incentive for solid, valuable verification work. Journals also carry a big part of the blame: they prioritize positive results and ignore almost completely negative results.

“We see this is a call to action, both to the research community to do more replication, and to funders and journals to address the dysfunctional incentives,” said Brian Nosek, a psychology professor at the University of Virginia and executive director of the Center for Open Science, the nonprofit data-sharing service that coordinated the project published Thursday, in part with $250,000 from the Laura and John Arnold Foundation.

 

 

Illustration: niemer.deviantart.com

People prefer getting an electric shock than being left alone with their thoughts

Illustration: niemer.deviantart.com

Illustration: niemer.deviantart.com

Here’s a weird study. A group of psychologists at University of Virginia introduced men and women alone in a room for fifteen minutes with nothing to distract them. No TV, no phone, no internet, no books, nothing but their thoughts… and a zapping device that sent a mild electric shock. Conclusion: most people would rather kill their time receiving electrical shocks than being left alone with their thoughts. It’s the kind of study that shocks you (sorry), because it tells an ordinary truth – we’re scared of being left alone with ourselves because people have become so disconnected with their inner selves, that they would gladly take on any distraction as long as it spares them the misery of confronting themselves.

Ok, so they were just curious. I’d zap myself too if I was alone in a room with only a zap button. Common, who wouldn’t? In the researchers’ defense, however, the study took the necessary precaution of phasing curiosity out by zapping each participant before they entered the room of solitary doom. So, each of the students involved in the study knew beforehand what happened if they got electrocuted by the device containing a 9 V battery. And they didn’t do this once. On average, participants received electrical shocks seven times. One man actually gave himself 190 electric shocks over a period of 15 minutes. Serious issues.

Wait, there’s more. Apparently, men have bigger issues with themselves than women. Out of 24 women, only six decided to shock themselves, but 12 out of the 18 thought they couldn’t miss it. The guy who zapped himself 190 times was only counted once, just so you know. The researchers hypothesize that men are more willing to take risks for the sake of a intense and complex experiences than women. Or they’re just stupid.

The results are a bit limited however. The sample size is really low, and all the people involved in the study are students at University of Virginia. There are also some psychological caveats that need to be factored out somehow, which researchers didn’t do. For instance, the participants knew they were watched, and this might have introduced unnecessary psychological stress. Heck, most of the participants would have rather masturbated probably than become electrocuted, which also defeats the purpose of being alone with your thoughts, but alas. I would love to see the results of a replicated study with a far broader sample size and demographic.

The findings appeared in the journal Science.