Either 35, 36, or 39 Percent of Psychology Results Can’t Be Replicated

Facts matter: Sign up for the free Mother Jones Daily newsletter. Support our nonprofit reporting. Subscribe to our print magazine.


The Washington Post informs me today that in a new study, only 39 out of 100 published psychology studies could be replicated:

I wonder if I can replicate that headline? Let’s try the New York Times:

Huh. They say 35 out of 100. What’s going on? Maybe Science News can tell me:

Now it’s 35 out of 97. So what is the answer?

Based on the study itself, it appears that Science News has it right. It’s 35 out of 97. Using a different measure of replication, however, the answer is that 39 percent of the studies could be replicated, which might explain the Post’s 39 out of 100. And it turns out that the study actually looked at 100 results, but only 97 of them had positive findings in the first place and were therefore worth trying to replicate. But if, for some reason, you decided that all 100 original studies should be counted, you’d get the Times’ 35 out of 100.

So there you go. Depending on who you read, it’s either 35, 36, or 39 percent. Welcome to the business of science reporting.

REAL QUICK, REAL URGENT

Minority rule, corruption, disinformation, attacks on those who dare tell the truth: There is a direct line from what's happening in Russia and Ukraine to what's happening here at home. And that's what MoJo's Monika Bauerlein writes about in "Their Fight Is Our Fight" to unpack the information war we find ourselves in and share a few examples to show why the power of independent, reader-supported journalism is such a threat to authoritarians.

Corrupt leaders the world over can (and will) try to shut down the truth, but when the truth has millions of people on its side, you can't keep it down for good. And there's no more powerful or urgent argument for your support of Mother Jones' journalism right now than that. We need to raise about $450,000 to hit our online fundraising budget in these next few months, so please read more from Monika and pitch in if you can.

payment methods

REAL QUICK, REAL URGENT

Minority rule, corruption, disinformation, attacks on those who dare tell the truth: There is a direct line from what's happening in Russia and Ukraine to what's happening here at home. And that's what MoJo's Monika Bauerlein writes about in "Their Fight Is Our Fight" to unpack the information war we find ourselves in and share a few examples to show why the power of independent, reader-supported journalism is such a threat to authoritarians.

Corrupt leaders the world over can (and will) try to shut down the truth, but when the truth has millions of people on its side, you can't keep it down for good. And there's no more powerful or urgent argument for your support of Mother Jones' journalism right now than that. We need to raise about $450,000 to hit our online fundraising budget in these next few months, so please read more from Monika and pitch in if you can.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate