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Why Thought Stopping Doesn’t Work

By Noa Kageyama, PhD

And the Paradoxical Strategy that Might Work Better

Have you ever found yourself struggling to suppress a negative thought?

Like, maybe you’re making a recording, and things are going well, and you find yourself trying your darnedest to avoid thinking about the really tricky shift coming up?

Or maybe you’re warming up on the morning of an audition, and trying really hard to stop wor­rying about getting dry mouth.

Or perhaps you’re on a road trip, and desperately trying to avoid thinking about Niagara Falls and Mountain Dew, because you really have to go—but the next rest stop isn’t for another 26 miles…

Whatever the situation, you’ve probably heard that trying to suppress a thought only makes it more likely that you’ll have more thoughts about that very thought. Which is often illustrated with the “white bear challenge”—where someone tells you not to think about a white bear, and then you see how long you can go before the white bear pops into your head.

And sure, that certainly sounds reasonable —but is there any truth to this? Like, is there any actual evidence that trying to suppress a particular thought leads to more thoughts about that thought? And if so, what are we supposed to do instead, if we want to minimize negative thoughts or worries, and stay in a more positive mental headspace?

There’s a study about that!

Believe it or not, there’s a study that explores this very question—and even uses the white bear!

A team of researchers (Wegner et al., 1987) recruited 54 undergraduate students, who were randomly assigned to one of three groups—a suppression group, an expression group, and a focused distraction group.

Participants in each group were asked to spend several five-minute sessions describing “everything that comes to mind” to a tape recorder (Imagine doing this now. Someone asks you to simply speak about “everything that comes to mind” into a recording device. What would you start saying?)


After participants’ first recording session, the ex­perimenter gave the suppression group the following instructions:

“In the next five minutes, please verbalize your thoughts as you did before, with one exception. This time, try not to think of a white bear. Every time you say ‘white bear’ or have ‘white bear’ come to mind, though, please ring the bell on the table before you.”

When the five minutes were up, the experimenter popped back in and asked participants to repeat the exercise, but this time they were given permission to actively “try to think of a white bear” and again ring the bell whenever the thought came to mind.


The expression group went through the same series of five-minute recording sessions, but their instructions were flip-flopped, where they were asked to think of a white bear for one five-minute session, and then asked to try not to think of a white bear in their next recording session.

Focused distraction

The focused distraction group was given instructions similar to the suppression group, except that their instruc­tions included this one little add-on:

“Also, if you happen to think of a white bear, please try to think of a red Volkswagen instead.”

The idea being, maybe having a specific replacement thought to think about would help them shift their thoughts away from the white bear a little quicker.

So…what happened? Was trying not to think of a white bear an effective thought suppression strategy?


The findings were kind of intriguing.

What’s up with those white bears?

One thing they found, was that we do indeed suck at try­ing not to think of white bears. On average, participants thought of a white bear more or less than six times, in a five-minute span. A rebound effect?

However, there was a significant difference between the suppression and expression groups in terms of how often the white bear popped into their thoughts. Both when they were asked to avoid thinking about a white bear, and when they were given permission to think about a white bear.

Ok…so what does that mean exactly, and why does it matter?

The numbers

Here are the numbers:

The suppression group was asked to suppress all thoughts of a white bear first, yet still reported 9.17 white bear thoughts in the five-minute session. And when they were allowed to think about white bears in the next five-minute session, they reported a whopping 34.05 white bear thoughts.

Conversely, the expression group was asked to actively think of white bears first, yet reported only 15.47 white bear thoughts (vs. 34.05). And when they were then asked to suppress all white bear thoughts, they reported just 4.13 white bear thoughts (vs. 9.17).

So in each five-minute session, both when asked to avoid white bear thoughts and when given permission to think about white bears, the expression group reported experiencing significantly fewer thoughts of a white bear. The only dif­ference between the groups being the order in which they were asked to suppress their thoughts.

Which suggests that there may be something of a “rebound” effect. Where trying to suppress a thought, could indeed lead to an increase in those thoughts once you stop actively trying to suppress them.

Whereas allowing yourself to engage with the thoughts for a time first, and then trying to suppress them seems to make the suppression more effective.

Which reminded me of the research on expressive writ­ing and test anxiety.

When asked to avoid white bear thoughts and when given permission to think about white bears, the expression group reported experiencing significantly fewer thoughts of a white bear.

Expressive writing

You can read more about the performance benefits of expressive writing on my website, but the gist is that text-anxious students who wrote down their worries and negative thoughts 10 minutes before an exam scored half a letter grade higher than students who didn’t write out their worries.

Which seems to mirror the results of the white bear study, no?

It makes me wonder if maybe these two findings are related in some way. Where instead of trying really hard to suppress one’s worries and negative thoughts in the leadup to a performance and paradoxically experiencing an explosion of negative thoughts during the performance itself, it might actually be easier to stay in a more positive headspace and suppress negative thoughts onstage, if you’ve allowed yourself a bit of time to actively engage in your worries and doubts in advance.

Take action

It does sound like a pretty backwards sort of thing to do, but maybe worth a try, the next time you have a relatively low-stakes performance situation to experiment with. A studio class or mock audition for a trusted friend might be a perfect time to try out something like this.

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