What chunking is
Chunking is a way of describing how abstract or how specific a statement is, and the skill of deliberately moving between levels in conversation. The idea comes from Gregory Bateson's "ladder of abstraction," and NLP borrowed it early: every statement sits somewhere on a ladder, from concrete sensory detail at the bottom to broad meaning and purpose at the top.
Two versions of the same fact at different chunk sizes:
- Chunked down: "I opened my laptop at 9:14, stared at the same paragraph for forty minutes, and typed three sentences."
- Chunked up: "I struggle with focus."
Both describe the same morning. One gives you detail you can work with; the other gives you meaning you can explore. Neither is right or wrong. The skill is knowing which direction serves the conversation.
Chunking down: to specifics
To chunk down is to move to smaller, more precise pieces: exact words, concrete behaviours, specific examples, sensory detail.
The questions: "What specifically?", "Can you give me an example?", "What exactly happens when...?", "What do you see, hear or feel in that moment?"
Why it matters: vague language hides the problem. "I feel stuck" is a summary, not information. Chunking down turns the summary into a scene you can actually work with: stuck where, doing what, saying what to yourself, at what time, with what physical feeling? This is the territory of the Meta Model, the precision-question system Grinder built, which we cover in the Milton Model versus the Meta Model.
Chunking up: to meaning and purpose
To chunk up is to move to larger categories: the goal behind the goal, the value underneath the behaviour, the identity behind the value.
The questions: "What is this a part of?", "What is this for?", "What does this give you?", "What matters about that?", "What would having that do for you?"
Why it matters: people often argue at the level of specifics while actually disagreeing at the level of values. Two colleagues can fight for an hour about a deadline (chunked down) and discover, when chunked up, that they both want the same thing: trust. Chunking up finds the shared meaning.
Sideways: examples and comparisons
There is also a sideways move: same level of abstraction, different content. "What else is like this?", "Give me another example", "Who else does this?" Sideways chunking widens the field of examples without changing the level of detail, which is useful for generating options.
Uses in coaching and conversation
Coaching. Chunk up to find motivation: "Why do you want this business to grow?" (purpose, values). Chunk down to make it actionable: "What exactly will you do on Monday morning?" (behaviour). A good coach alternates deliberately; a confused conversation is usually stuck at one level.
Resolving conflict. Chunk up to the shared value, then chunk down together to agree on specifics that honour it.
Persuasion and influence. Chunking up connects your proposal to what the other person cares about ("this saves you time" is a chunk up to their value); chunking down makes you sound concrete and credible ("here is the exact step"). Used ethically, this is clarity; used to dodge and manipulate, it is the darker side of the same skill. The ethical line is the same one we draw across all of NLP techniques.
Making decisions. A decision you keep postponing is often a conflict between levels: you want the outcome (up) but the concrete next step feels wrong (down). Naming both levels usually reveals what the actual choice is.
How to practice it
Try this in your next conversation: whenever someone gives you a vague sentence, chunk down with one question ("what specifically?"). Whenever someone is drowning in detail, chunk up with one question ("what is this all in service of?"). Notice how the conversation changes. That awareness, more than any script, is the skill.
The honest limit
Chunking is a lens, not a truth machine. Moving up the ladder does not make a bad idea meaningful; it makes it sound meaningful. And chunking down does not guarantee accuracy, because people's reports of their own behaviour are imperfect. Use it as a tool for exploring, not as a way to prove a point.
If you want to see chunking used well, watch how we handle language in the free webinar. If you want supervised practice at it, with feedback on when to go up and when to go down, the programme runs twenty-four weeks of exactly that.