Here’s a strange fact about the mind: it’s not built to give you an accurate picture of reality. It’s built to keep you alive, and those two goals often pull in different directions from “notice everything.”
A new study out of Psychological Science makes this vivid. Researchers had over 100 people listen to a stream of nonsense syllables, with occasional real words dropped in — some positive, some negative. The expectation was obvious: negative words like “prisoner” or “knife” should jump out. Instead, the opposite happened. People noticed the negative words less than the positive or neutral ones. As lead author Gal Chen put it, this ran so hard against the team’s own intuition that they re-ran the study, assuming they’d made a mistake. Same result. Chen’s explanation: negative information is disruptive, so the unconscious mind’s default is to filter it out rather than let it derail whatever task is at hand.
This is one more piece of evidence that your brain is not a neutral recording device — it’s an editor, constantly deciding what gets through. I’ve written before about how memory itself seems designed less for remembering than for forgetting: whether you look at engram cells getting overwritten by new neural ensembles, or memory’s odd dependence on location and context, the through line is the same: your brain sheds the past by default, and holding onto anything requires working against that grain. Add the idea that the brain isn’t wired for full presence either — it’s constantly scanning for danger and filling gaps with prediction rather than absorbing what’s actually in front of it — and a picture emerges. The mind we experience as objective is actually highly curated, and not always in our favor as communicators.
There’s a deeper layer too. Research on “primal world beliefs” — deep, stable orientations about whether the world is fundamentally safe or dangerous — shows that these beliefs shape almost everything downstream: trust, gratitude, openness to change, happiness. Combine that with a brain that filters out negative language by default, and you get a strange asymmetry: your audience’s deep-seated worldview may be shaped by danger and threat, even while their moment-to-moment perception is quietly screening negative words out.
What does this mean practically? If you build a speech around warnings — “don’t fail,” “avoid the mistakes of,” “this isn’t working” — some of that negative framing may simply not register the way you intend. Not because your audience disagrees, but because their unconscious mind may be quietly declining to let it in. The fix isn’t to avoid hard truths. It’s to state what you want positively wherever you can. Instead of “don’t lose the client,” try “keep the client close.” Instead of “stop missing deadlines,” try “hit every deadline.” The brain’s whole-network processing — its tendency to respond to the felt tone and framing of a message, not just isolated facts — means the affirmative version often lands, and sticks, when the negative version quietly gets filtered out before it ever reaches conscious awareness.
Say what you mean. Just say it in the words your audience’s brain is actually built to hear.
(Chen et al., Psychological Science, 2026)
1. The "squelched negative words" study:
Chen, G.R., Maswadeh, Z., Deouell, L., & Hassin, R.R. (2026). "Conscious detection of spoken
words depends on their valence." Psychological Science, 47(5), 303–317.
https://doi.org/10.1177/09567976261434113
2. Primals Project (Dr. Jeremy Clifton, University of Pennsylvania):
The project's home page, run out of Penn's Positive Psychology Center, is the natural link for a
general reference to their body of work:
