Most of what you’ve ever been taught about communication has been about what to say. Training programmes in business, courses in psychology, guides to public speaking, writing workshops, even the informal advice your parents gave you about how to handle difficult situations — almost all of it is organised around the words you produce. This is understandable. Words are the visible part of communication. They can be examined, edited, improved. The spaces between words are harder to teach.
But almost everyone who has learned to communicate well — negotiators, therapists, investigators, great teachers, the friends in your life whose conversations you actually remember — has discovered, often late, that silence does a significant amount of the work. The deliberate pause. The space held open after a question. The willingness to not-fill the awkward moment. These are not absences of communication. They’re specific conversational moves, and they often do things the words themselves can’t.
The tactical silence of hostage negotiation
The clearest popular articulation of silence as a conversational tool came from Chris Voss, whose negotiation framework we’ve already encountered. Voss, drawing on his career as an FBI hostage negotiator, has written about what he calls tactical silence — the deliberate use of pauses in high-stakes conversations.
His observation, developed over thousands of real negotiations, is that silence creates pressure in a very specific way. Most people in conversation are uncomfortable with silence, particularly extended silence. When you stop speaking after a question, or after the other party has offered something, most people will fill the space — often with more information than they intended to give, or with concessions they hadn’t planned to make. The pressure isn’t coming from anything you’re doing. It’s coming from the space itself and from the listener’s discomfort with it.
In negotiation settings, this often produces valuable information. A potential buyer, after naming their offer, will often follow it with additional context that reveals their flexibility. An employee, after making a request, will often follow it with softening that reveals their willingness to settle. An opponent, after stating their position, will often keep talking until they’ve explained more than they intended. The silence doesn’t force this. It simply refuses to rescue them from their own discomfort, and the result is usually that they speak longer and more revealingly than they would have if you’d jumped in.
This isn’t manipulation, exactly, though it can shade toward it if used badly. At its best, it’s simply letting the other person finish the thought they were trying to finish, rather than filling the space they would have used.
The interrogation research
A more uncomfortable but illuminating body of research comes from the psychology of police and investigative interviewing. Researchers including Ray Bull at the University of Derby and Dave Walsh, who have studied what produces effective interviews, have found that the most successful investigators tend to be comfortable with silence in ways that less successful ones aren’t.
The pattern is consistent. Less effective interviewers keep filling silences, asking follow-up questions, supplying suggestions about what the interviewee might mean. More effective interviewers ask a question, and then wait. They wait longer than feels comfortable. They wait longer than their subjects expect. The subjects, faced with the silence, fill it — often with information they hadn’t planned to share, or with elaborations that reveal more than their initial answer.
What this research shows is that silence is not neutral. It’s active. It pulls the other person forward, often into territory they wouldn’t have entered if the interviewer had been filling the space with prompts. Skilled interviewers have learned to let this happen; unskilled ones, uncomfortable with the silence, inadvertently rescue the subject from the very space that would have produced better answers.
The same principle applies, in gentler form, to ordinary conversations. If you ask someone a question and they give a partial answer, the space you leave after their answer is where the rest of it sometimes emerges. If you immediately ask a follow-up, you’ve closed that space. Many of the most revealing moments in any conversation are the ones that happen in the three to five seconds after someone finishes their first answer, if you let them.
Bodie’s research on pause length
The communications researcher Graham Bodie, whose listening work we’ve encountered, has done specific research on pause length and conversational quality. His findings are worth knowing.
Conversations where listeners pause at least three seconds before responding are reliably rated as higher quality by both participants than conversations with shorter pauses. The effect isn’t enormous, but it’s consistent. The three-second pause produces several useful things: it gives the speaker time to finish the thought they might still be completing, it gives the listener time to actually consider what was said rather than reacting quickly, and it signals to the speaker that their words are being taken seriously rather than simply processed.
This is a small finding with large implications. Most ordinary conversation runs on much shorter pauses — often under a second, sometimes with overlapping speech. This pace feels natural, but it systematically degrades conversational quality in ways most people don’t notice. Conversations conducted at a slower pace, with longer pauses, usually produce better understanding on both sides, less defensive exchange, and a subjective experience of having connected more genuinely.
The challenge is that slowing down feels unnatural, and both parties have to do it for it to work. If you’re pausing three seconds and the other person is jumping in after half a second, the rhythm doesn’t establish. But if you’re both doing it, the conversation settles into something quite different from what either of you would have produced alone.
The contemplative traditions
Silence as a practice has, for thousands of years, been central to contemplative traditions. The Quaker tradition, founded in seventeenth-century England, centres its worship on extended shared silence — meetings can last an hour or more with no words spoken unless someone feels specifically called to speak. The practice isn’t framed as absence of communication. It’s framed as a richer form of it, one that makes space for understanding that words can’t fully produce.
Similar practices exist across traditions. Zen Buddhist silent retreats. Christian monastic rules of silence during specific hours. Hindu and Jain practices of maun vrata — deliberate vows of silence for extended periods. Sufi traditions of silent remembrance. What these diverse practices share is the intuition that silence isn’t just the absence of talk; it’s a substantive state with its own properties, and sustained practice of it produces something specific that speech alone can’t.
Modern neuroscience has, cautiously, begun to find correlates of what these traditions described. Research by the Italian neuroscientist Luciano Bernardi and others has shown that extended silence, even relatively brief silences, produces measurable changes in brain activity and physiological state — reduced sympathetic nervous system activation, different patterns of connectivity in default-mode networks, subjective reports of calmer and clearer thinking. The findings are preliminary, and not all of them have replicated cleanly, but they point in a direction that the contemplative traditions had already identified through long experience.
For ordinary modern life, the practical implication is narrower. You don’t need to take silent retreats to benefit from what the contemplative traditions understood. You just need to notice that the small pockets of silence in your day — moments you usually fill with podcasts, music, phone-checking — are doing work if you let them. The commute without input, the walk without a podcast, the short period between activities when you’re not entertaining yourself, are not wasted time. They’re the time in which some of your actual thinking happens. Fill them continuously with input, and that thinking doesn’t happen.
The counter-thread worth hearing
Silence can also be weaponised. This is a serious concern, worth addressing directly before anyone takes the research as licence to simply stop responding in difficult situations.
John Gottman’s research on relationships, discussed in another article in this series, identifies stonewalling — the complete withdrawal from conversation — as one of the most corrosive patterns in close relationships. The stonewalling partner isn’t using silence as a listening tool. They’re using it as a way of punishing the other person, or of refusing to engage with something they should engage with. The silence, in this pattern, is a weapon rather than a tool.
The distinction between strategic silence and stonewalling isn’t always obvious from the outside. Both involve not speaking. What distinguishes them is intention and context. Strategic silence is a temporary pause in a conversation that is continuing. Stonewalling is a unilateral refusal to engage in the conversation at all. Strategic silence creates space; stonewalling closes the door.
A rough diagnostic: if the silence is helping the other person speak more fully, it’s probably productive. If the silence is shutting them down, it’s probably not. The feeling in the room is different. People can usually tell, even when they can’t articulate why.
What to actually practise
For most ordinary conversations, the research suggests a few simple moves worth building into your practice.
Try the three-second pause before responding in important conversations. Not always — it would feel strange in casual exchanges — but in conversations where something real is being discussed. The space lets the other person complete their thought, lets you actually consider it, and signals a quality of attention that matters.
When someone has given a partial answer to something you’re genuinely curious about, don’t fill the space immediately with a follow-up. Let a few seconds pass. Often what comes next is more revealing than what came first.
Protect some pockets of silence in your day. Not as an achievement. As a practice. The walk without podcasts. The commute without music. The short periods of transition when you could reach for a phone and instead don’t. These are the times your actual thinking has a chance to happen.
Notice the difference in yourself between strategic silence and stonewalling. If you’re tempted to go silent in an argument to punish the other person, that’s the bad kind. If you’re tempted to stay silent to let them finish a thought or to take a breath before responding, that’s the good kind. The feeling is different from the inside, and the impact is different on the other person.
The question that remains
The deepest thing the research on silence suggests is that much of what we call communication is actually a kind of noise that prevents the real thing. Ordinary conversation, at ordinary pace, with ordinary interruption rates, often doesn’t allow either party to finish what they were trying to say or think about what the other said. The practice of slowing down — of leaving the space that most people hurry to fill — produces a different kind of conversation than modern life usually allows.
This is most available in the small moments. The pause after a friend tells you something difficult. The silence after you ask someone how they really are. The space you don’t immediately fill when the conversation arrives somewhere meaningful. These are the places where something unusual can happen, if you let them.
The question worth carrying, next time you’re tempted to fill a pause:
What would happen if you didn’t fill it — and what might have arrived in that space instead?
Key research referenced: Chris Voss, Never Split the Difference (2016); Ray Bull and colleagues’ research on investigative interviewing; Graham Bodie’s research on pause length and conversational quality; John Gottman’s research on stonewalling; Luciano Bernardi’s research on the physiological effects of silence; contemplative traditions on silence as practice.