Co-regulation: definition and everyday examples

Co-regulation is the process by which one person’s calm, steady nervous system helps settle another person’s, through tone of voice, facial expression, touch, and simple presence. It starts in infancy, when caregivers help babies manage big feelings they can’t yet handle alone, and continues throughout life in close relationships.

Where does the idea of co-regulation come from?

Developmental psychologist Edward Tronick described this dynamic as a “mutual regulation model” in a 1989 paper in American Psychologist: infant and caregiver continuously read and adjust to each other’s cues. His earlier still-face experiment, described in a 1978 paper in the Journal of the American Academy of Child Psychiatry, showed what happens when this breaks down. When a parent holds a blank, unresponsive expression, a happily babbling infant quickly turns distressed and looks away. Most infants start to settle again once the parent re-engages, though not right away, evidence of how much infants depend on a caregiver’s responsiveness to help settle their own state.

What does co-regulation look like beyond infancy?

It doesn’t stop at childhood. In a small brain-imaging study in Psychological Science, Coan, Schaefer, and Davidson (2006) had married women await a mild electric shock while holding their husband’s hand, a stranger’s hand, or no hand at all. Holding a spouse’s hand quieted brain activity tied to threat, and the effect grew stronger with marital quality. Smaller versions show up daily: a friend’s steady voice talking you down from panic, a hand on your back after bad news, a calmer coworker’s presence in a tense meeting.

What’s happening in your nervous system?

Psychologist Stephen Porges’s polyvagal theory frames co-regulation as a biological imperative, not a nicety, as he restates in a 2022 paper in Frontiers in Integrative Neuroscience. Cues of safety in someone else’s face, voice, and posture can shift your nervous system regulation toward the calmer ventral vagal state, largely below conscious awareness, a detection process Porges calls neuroception.

Can you co-regulate on your own?

Not exactly, but you can build a related skill. Tronick’s model holds that children develop their own emotional regulation partly by internalizing the steadying they first got from someone else, though another regulated nervous system isn’t always around when you need it.

Many people build a solo practice for those moments instead, including bilateral stimulation, the rhythmic left-right technique at the center of EMDR (see how bilateral stimulation affects the nervous system). EmEase, a self-guided EMDR app, offers a guided version of this practice at app.emease.com for everyday stress: a steadying option for moments when co-regulation with another person isn’t available, not a replacement for it.