Hi! Welcome. You being here means more than you know. Knowing it lands with someone like you keeps me going. I'm Lavena Xu-Johnson. I write about psychology for founders. Why? Because scaling a business means scaling ourselves first.
Last Friday, I noticed in some video podcast clips that I had this goofy, exaggerated downturned-mouth facial expression whenever I was surprised or impressed, and I was doing it far more than I liked.
When I brought it up, my husband burst out laughing. He realized he had been doing the same thing without knowing.
We traced it back to a meme he'd seen a few years ago, which he started doing for laughs until it became a habit. Somewhere along the way, I'd adopted it too completely without noticing.
We started calling each other out every time we caught it, and it became the funniest little game.
This is what behavioral scientists call: mirroring.
It is one of the most well-documented phenomena in neuroscience, and a very useful art to master. Once you understand the mechanism underneath it, you will never look at a pitch, client meeting, or a difficult conversation the same way again.
Today, we are going to decode ‘mirroring’ - the body language edition: what it is, why your brain does it automatically, and how to use it with intention as a leader.
(Part 2 will cover the verbal side: how the words and filler language we reach for shape how people hear us, and how to change it.)
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The theory: mirror neurons
In the early 1990s, a neuroscientist named Giacomo Rizzolatti was studying motor neurons in macaque monkeys at the University of Parma. The research was focused on a specific area of the premotor cortex called F5, which fires when a monkey reaches for an object.
Then, accidentally, something strange happened.
A researcher walked into the lab, eating an ice cream cone. The monkey was sitting still, not moving a muscle. But the same motor neurons that fired when the monkey itself reached for food lit up in response to watching the researcher eat.
The monkey's brain was simulating the action without the monkey doing anything at all.
Rizzolatti and colleagues described this formally in a landmark paper published in Brain, coauthored with Vittorio Gallese, Leonardo Fogassi, and Luciano Fadiga. They named these cells mirror neurons - neurons that fire both when an animal performs an action and when it observes that same action being performed by another (Gallese et al., 1996).
What the team had found, without setting out to do so, was the neural basis of imitation.
By 1999, Marco Iacoboni and colleagues published fMRI data showing evidence of a mirror neuron system in humans - localized in Broca's area and the inferior parietal cortex, regions involved in both language and movement (Lacoboni et al., 1999). By 2004, Rizzolatti and Laila Craighero had written what became one of the most cited neuroscience reviews of the decade, concluding that the mirror neuron system is the mechanism by which we "understand the actions and intentions" of others from the inside out — not by reasoning about them, but by internally simulating them (Rizzolatti & Craighero, 2004).
From the lab to real life: the chameleon effect
What Rizzolatti's team found in macaques, social psychologists had been documenting in humans for decades; they just didn't yet have a name for the mechanism.
In 1999, Tanya Chartrand and John Bargh published a series of experiments on what they called the chameleon effect: the tendency to automatically mimic the postures, mannerisms, and facial expressions of the people we interact with, without awareness, without intention, and without being asked (Chartrand & Bargh, 1999).
In one experiment, participants worked one-on-one with a confederate who either rubbed their face or shook their foot. Participants mimicked whichever behavior their partner was doing, and did not notice they were doing it.
More importantly, when the confederate intentionally mirrored the participant rather than doing their own thing, participants rated that person as significantly more likable and the interaction as significantly smoother.
The mirroring created affiliation: It made people feel understood, even though nothing substantive had been said.
This is the neurological explanation for charisma that has nothing to do with charm or personality. Some people make you feel seen not because of what they say, but because they intentionally synchronize their body language with yours.
When you walk into a high-stakes meeting, which type of mirroring do you pay most attention to?
The 4 aspects of unconscious mirroring
Aspects | What it includes | What it means |
|---|---|---|
Postural | Body orientation, lean, arm position | Alignment and openness |
Gestural | Hand movements, head nods, timing | Engagement and resonance |
Facial | Micro-expressions, eyebrow activity, and mouth tension | Emotional attunement |
Prosodic | Pace, pitch, pause patterns | Cognitive synchrony |
Most people unconsciously operate in one or two planes, whereas highly charismatic communicators, knowingly or not, mirror across all four.
The goal is not to mimic.
But to tune in.
Why does this matter more in leadership?
Research by Elaine Hatfield, John Cacioppo, and Richard Rapson established that emotions, not just behaviors, are contagious through the same mirror mechanism. Their work on emotional contagion showed that facial feedback loops are the primary route: when we unconsciously mimic someone's expression, our face sends signals back to our brain, shifting our internal state to match.
A leader who walks into a room with a closed posture, a fixed expression, and a clipped tempo is not only communicating tension but spreading it to the people around them. The team mirrors the leader, then experiences the emotional state that expression generates, before any words have been spoken.
The reverse is equally true. A leader who enters with physical openness: unhurried breath, steady eye contact, neutral but present expression, establishes the same calmness for the people in the room.
Ulf Dimberg and colleagues demonstrated this specifically with facial expression: even when participants were shown emotional faces so briefly they could not consciously perceive them (under 30 milliseconds), their facial muscles still responded, and their mood shifted accordingly (Dimberg et al., 2000).
What does it mean for founders?
We’re not aiming to perform a posture; mirroring feels clinical, and people notice. The goal is to build the habit of awareness first, which is exactly what my husband and I accidentally stumbled into.
1. Audit our default expression, not just the intentional one. Record yourself in an unguarded moment: a meeting, a voice note, a call. What does your face default to when you are listening? Processing? Disagreeing? We are almost always the last to know.
2. Notice what we are mirroring from others. If we walk out of a meeting feeling drained or scattered, ask whether we absorbed the room's state rather than set it. Mirror neurons are a two-way system; awareness of what we are absorbing is the first act of regulation.
3. Use postural openness as a deliberate anchor before high-stakes moments. Research on posture and self-perception suggests that even a brief adoption of an open, expansive posture affects how we carry ourselves into the ensuing conversation (Carney et al., 2010).
4. Slow our tempo before we speed up our words. Mirroring happens across prosodic patterns too: pace, rhythm, silence. If we take an unhurried breath before answering, we can modulate the relational temperature.
Key takeaways
My husband and I started this as a game. A dumb, funny, call-each-other-out game.
But it was so helpful when we built that simple daily audit, a tiny moment of noticing something we were doing completely on autopilot that was shaping how we came across.
Being more attuned to our body language is not about performing, but being better at taking control of our presence.
See you next week,
Lavena
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