Self-talk and the brain
Real effects, in the moment.
A viral post says “science confirms that brain cells are influenced by our self-talk.” Short answer: how you talk to yourself does matter in experiments — training athletes in self-talk improved performance, and talking to yourself by name (“you can do this, Sam”) eased distress before a stressful speech and dampened emotional brain activity on scans. Those effects were measured over minutes and seconds, not as lasting changes to brain cells.
How the evidence flows
Each claim (middle), the studies that tested it (left) — green found it, red found nothing — and the grade they add up to (right). Drawn from the same records as the grades below. Tap to open full size.
Self-talk and the brain · evidence checked 2026-10-27
What the research shows
Grades are calculated from the studies listed, by fixed rules.
- The way you talk to yourself changes how stressed you feel and how well you performEarly evidence
Pooled studies found that training athletes in self-talk improved performance, and lab experiments found that talking to yourself by name under stress lowered distress. These were short tasks, and nobody can be blinded to their own self-talk.
- The way you talk to yourself changes activity in your brainEarly evidence
The ad said “Scientists say growing research shows that the way people talk to themselves can directly affect the brain, influencing emotions, stress levels…”
Influencing The Culture · Facebook ad, seen Oct 2026
Brain scans show that talking to yourself by name dampens brain activity linked to emotional reactions, within seconds. The post’s headline says “brain cells”: that is activity measured for seconds, not a lasting change to cells, which no study we found measured.