Affect labeling is the unglamorous name for something people do naturally: putting a feeling into words. "I'm anxious." "That stung." "Mostly tired, a little resentful." The surprising part is what the act does. Across two decades of lab work, naming an emotional state reliably turns its intensity down — in the brain, in the body, and in self-report.
If you keep a mood journal, this is the mechanism you are using whether you know it or not. The entry is not just a record of the feeling. The entry participates in the feeling.
The 2007 experiment
The founding study is Lieberman and colleagues' fMRI experiment from 2007.1 Participants viewed photographs of faces showing fear or anger while their brain activity was recorded. In one condition they matched the face to an emotion word (angry, scared); in others they matched it to another face, or to a gender-appropriate name. Same photographs, same scanner, different task.
Choosing the emotion word produced lower amygdala response than the other tasks, alongside higher activity in the right ventrolateral prefrontal cortex, a region involved in symbolic processing and inhibition. The pattern looked like language doing regulation: engaging the verbal label appeared to dampen the alarm response, with the prefrontal activity statistically accounting for the amygdala decrease.
One fMRI study would be a curiosity. What made affect labeling a literature is that the behavioral effect kept replicating outside the scanner — in skin conductance, in heart rate, in reported distress.
Regulation without trying
Torre and Lieberman's 2018 review organised those findings under a useful idea: affect labeling is implicit emotion regulation.2 Reappraisal — deliberately reinterpreting a situation — works, but it is effortful, and people in a strong emotional state often cannot manage it. Suppression takes effort too, and tends to increase physiological arousal rather than reduce it.
Labeling asks for almost nothing. You do not try to feel better. You do not argue with the feeling or reframe the situation. You state what is there, and the regulation happens as a by-product.
The review also documents an odd disconnect: people consistently predict that labeling a negative feeling will intensify it. Saying "I'm furious" feels like feeding the fire. Measured arousal says otherwise. This matters practically, because it means the technique is systematically underused — nobody reaches for a tool they expect to make things worse.
The spider study
The most concrete clinical test is Kircanski, Lieberman and Craske's 2012 spider experiment.3 People with spider fear completed a short course of approach exposure to a live tarantula, in four groups: one verbalised their feelings about the spider ("I'm anxious the disgusting tarantula will jump on me"), one reappraised ("looking at the little spider is not dangerous"), one distracted themselves, one just did the exposure.
A week later, facing a different spider in a different setting, the labeling group showed the lowest skin-conductance response and edged the distraction group on how close they were willing to get. More striking still: within the labeling group, people who had used more anxiety and fear words during exposure showed the biggest reductions. Naming the fear, in the moment of facing it, appeared to strengthen the new safety learning — which is exactly what modern exposure therapy theory predicts matters most.
Better labels work better
There is a resolution dimension to this. Barrett and colleagues' diary research showed that people who distinguish their negative emotions finely — irritated versus disappointed versus ashamed, rather than a blanket bad — also regulate them better.4 That skill is called emotional granularity, and it composes naturally with labeling: the act of naming helps, and more precise names seem to help more.
The flip side is alexithymia — difficulty identifying and describing feelings, present in roughly one person in ten. For someone who draws a blank at "what are you feeling?", the advice just name it is useless on its own. What helps is recognition instead of recall: a list of candidate words to check against the body's signal, which turns an impossible production task into a feasible multiple-choice one.
What this means for a mood journal
This research is, fairly directly, the case for mood tracking as an intervention rather than just a measurement. Colors is built around the labeling act: you pick a color for the valence, then a specific word — not just bad but ashamed, jittery, envious, sluggish — from the set under that color. Two taps, and you have performed affect labeling with a granular label, which is the version the evidence favors.
A useful habit on top of that: add one line of context. Ashamed. Said something dumb in standup does two jobs — the label regulates now, the sentence makes the entry legible in next week's review. The broader evidence on expressive writing, covered in the science of journaling article, points the same direction: the benefit comes from putting internal states into language, not from the diary as an archive.
Honest limits
The single-use effect is modest. Labeling one wave of anxiety turns the volume down; it does not switch the speaker off, and it is not a treatment for an anxiety disorder or depression. The strongest claims in this literature are about repeated practice and about labeling combined with other work — exposure, reappraisal after the arousal drops, behavioral change.
And labeling is not rumination. Naming the feeling once and moving on is the dose. Re-describing the same hurt nightly, in growing detail, is a different activity with a different (worse) evidence profile — the when tracking backfires article covers that failure mode. The skill is to say the true word, let it do its quiet work, and close the app.
Frequently asked questions
What is affect labeling?
Affect labeling is the act of putting an emotional state into words — saying or writing 'I'm anxious' while you are anxious. In a series of studies beginning with Lieberman and colleagues' 2007 fMRI experiment, the act of labeling reliably reduced amygdala response and self-reported distress compared with attending to the same stimulus without words. It is one of the most direct pieces of evidence that journaling about feelings does something, rather than just recording them.
How is affect labeling different from suppression or reappraisal?
Suppression tries to push the feeling down; reappraisal tries to change what the situation means. Affect labeling does neither — you simply state what you feel. Torre and Lieberman's 2018 review calls it implicit emotion regulation: it regulates as a side effect, without the goal of regulating. That makes it cheaper to use than reappraisal, which takes deliberate cognitive work, and safer than suppression, which tends to backfire.
Do I have to believe it works?
Apparently not. Studies reviewed by Torre and Lieberman found that people predict labeling will make them feel worse — saying 'I'm furious' feels like turning toward the feeling — yet measured arousal goes down anyway. The effect does not depend on expecting it.
Does labeling help during exposure to something frightening?
In Kircanski, Lieberman and Craske's 2012 study, people with spider fear did a brief course of approach exposure to a live tarantula. The group instructed to state their feelings out loud ('I'm anxious the spider will jump on me') showed lower skin-conductance response to a different spider a week later than groups using reappraisal or distraction. Labeling the fear during exposure seems to help the new learning stick.
Can naming feelings backfire?
The act of labeling once is different from circling the feeling for an hour. Writing 'ashamed' and moving on is labeling; replaying the scene that caused the shame on a loop is rumination, and rumination predicts worse mood. A useful rule for journaling: name the feeling, add a sentence of context, stop. If entries keep growing into essays about the same event, that's a sign to switch from describing the feeling to doing something with it.
Not medical advice
This article is for informational and educational purposes only. It does not constitute medical advice and should not replace consultation with a licensed mental health professional. If you are in crisis, please contact emergency services in your country immediately.
Crisis lines: US — 988 Suicide & Crisis Lifeline · UK / Ireland — Samaritans 116 123 · EU — Befrienders Worldwide
Last reviewed: May 2026.
References
- Lieberman, M. D., Eisenberger, N. I., Crockett, M. J., Tom, S. M., Pfeifer, J. H., & Way, B. M. (2007). Putting feelings into words: Affect labeling disrupts amygdala activity in response to affective stimuli. Psychological Science, 18(5), 421–428. doi:10.1111/j.1467-9280.2007.01916.x
- Torre, J. B., & Lieberman, M. D. (2018). Putting feelings into words: Affect labeling as implicit emotion regulation. Emotion Review, 10(2), 116–124. doi:10.1177/1754073917742706
- Kircanski, K., Lieberman, M. D., & Craske, M. G. (2012). Feelings into words: Contributions of language to exposure therapy. Psychological Science, 23(10), 1086–1091. doi:10.1177/0956797612443830
- Barrett, L. F., Gross, J., Christensen, T. C., & Benvenuto, M. (2001). Knowing what you're feeling and knowing what to do about it: Mapping the relation between emotion differentiation and emotion regulation. Cognition & Emotion, 15(6), 713–724. doi:10.1080/02699930143000239