Inhibition
Short answer
In psychology, inhibition (often called inhibitory control) is the ability to hold back an automatic urge, thought or response so you can do what you actually intend. It covers resisting temptations, staying on task despite distractions, and pausing before you speak. It is one of three core executive functions. Everyone struggles with it at times, and lapses do not show ADHD.
You want to check your phone, but you finish the paragraph first. Someone says something irritating in a meeting, and you hold your reply until you have cooled down. In both moments, a part of you put the brakes on. That braking is inhibition.
The everyday meaning of inhibited, as in shy or reserved, is different. In psychology the word is about control, not personality.
The research definition
Three faces of the same brake
- Holding back an action: not grabbing the last cookie, not hitting send on an angry email.
- Holding back attention: tuning out a nearby conversation so you can read.
- Holding back a thought: setting aside a worry long enough to finish a task.
These sound different, but they share the same core job: stopping something automatic so that something chosen can happen instead.
Why it varies from day to day
Most people recognize this from experience. After a short night or a stressful week, it is harder to resist snacks, bite your tongue, or keep your hands off the phone.
Inhibition, impulsivity and screening
When inhibition fails often, people describe the result as impulsivity, which is one of the features health agencies discuss in ADHD. The ASRS v1.1 Screener asks how often certain experiences happened over six months, and some of them relate to waiting and interrupting. It does not test inhibitory control. Clinicians sometimes use computer tasks that require holding back responses, but no single task decides an evaluation.
Part 2 of our screener, the Attention Profile, has a Pacing area that touches on related everyday experiences. It is descriptive only, has no norms and does not measure ADHD.
What a lapse does not show
Eating the cookie, blurting out an answer, or opening social media when you meant to work does not reveal a disorder. It shows that a strong automatic pull won that round. A clinician is interested in how often this happens, how long it has been happening, and how much harm it causes.
A starting point for your next step.
Take the free screenerFrequently asked questions
What is an example of inhibitory control?
Waiting your turn to speak instead of interrupting, ignoring a notification to finish a task, or resisting dessert when you planned not to have it are common examples.
Is inhibition the same as impulse control?
They are closely related. Inhibitory control is the research term for the broader ability, and impulse control usually refers to the part about holding back actions.
Does weak inhibition mean ADHD?
No. Stress, poor sleep and many other factors weaken it for everyone. Only a full evaluation by a qualified clinician can identify ADHD.
Sources
Source check: 2026-10-28. No medical review has occurred.
Published 2026-10-28. Factual source check: ADHDFalcon editorial team, factual source check, 2026-10-28. No medical review has occurred.