Decide when to rely on SPIN question types and when to think in terms of the gap.
Hafiz, the seller you met in lessons 3.1 and 3.2, used to try to recall the full SPIN sequence in the middle of a meeting, and it made him stiff. He now uses SPIN and gap selling together, each for a different job.
Sales teams argue about which of these two frameworks to use. One manager may favour SPIN while another hands out copies of Gap Selling. A new seller who tries to follow both in one meeting ends up following neither well. The two methods do different jobs, and once you see what each is for, they stop competing.
SPIN comes from Neil Rackham's research. It is a question sequence of four types: it tells you what kind of question to ask and roughly in what order. You start with a few situation questions to establish the context, then move to problem questions, then implication questions, then need-payoff questions. SPIN is a tool for the conversation itself. It helps you decide what to ask next after the buyer answers.
Gap selling comes from Keenan's book, Gap Selling. It gives you a picture to fill in, the gap map, which has three parts. The current state is the buyer's present situation and problems, including an impact column. The future state is what the buyer wants, ideally in their own words. The gap is the distance between the two. Gap selling does not prescribe particular question types. It is a tool for thinking about the buyer before and after the meeting.
Put simply, SPIN tells you how to ask, and the gap map tells you what you are trying to find out.
Both methods put the problem and its consequences before the product. In SPIN, you do not describe the solution until the buyer has stated, in their own words, the value of solving the problem, which happens through need-payoff questions. In gap selling, you do not present until you understand the current state, including its impact, and the future state the buyer wants.
Both also assume that the size of the problem decides whether a sale happens. SPIN expresses this through implication questions, which make a problem feel larger by tracing its effects. Gap selling expresses it through the gap. A large gap means a strong reason to buy, and a small gap means little reason, whatever the product.
Done properly, either method leads to much the same questions. The differences are mostly in what the seller holds in their head while asking.
Implication questions are how you discover the size of the gap, and this is where the two methods connect.
Take Rachel, the buyer from lessons 3.1 and 3.2, whose overtime calculations go wrong. That is the fact a problem question uncovers. It shows a problem exists and it belongs in her current state, but it says nothing about the size of the gap.
An implication question asks what follows from the problem. Asked "When a payslip is wrong, what happens next?", Rachel describes two days of corrections, drivers who distrust their pay, and a resignation. Each answer goes into the impact column of her current state, and the gap grows as the impact grows.
A need-payoff question then fills in the future state, in the buyer's own words. Asking Rachel "What would it mean if payroll closed in a day?" gets her to describe what she wants.
A well-run SPIN conversation therefore supplies most of what a gap map needs, and a gap map shows which SPIN questions you still need to ask.
The division of labour that works is gap thinking to plan and review, and SPIN question types to run the conversation. In practice it falls into three stages.
Before the meeting, sketch the gap map you expect, based on your hypotheses from lesson 1.2, "Prepare a hypothesis, not a pitch". The empty boxes show what you need to find out. During the meeting, use the SPIN types to choose your next question. If you have the situation and one problem, ask implication questions until you understand the consequences. Once the consequences are clear, ask a need-payoff question. After the meeting, redraw the gap map from what you actually heard. Any box you could not fill gives you the first question for the next meeting.
Hafiz now keeps a three-box gap sketch on a card beside his notebook. Whenever the conversation pauses, he asks himself which box is still thin, then picks the SPIN question type that fills it. You can use the same shortcut in your own meetings: at each pause, find the thin box and choose the question type that fills it.
The right lean depends on the type of sale. With short meetings and quick decisions, SPIN types alone may be enough, and a gap map can feel like more paper than the sale needs. In sales with several meetings and several people, the gap map earns its keep. It gives you something to compare across meetings and to share with colleagues.
Wei Ling, the adviser from module 2, sells to households, usually over two or three meetings. She finds the future state the hardest part, because many clients have never said out loud what they want money to do for them. She leans on gap thinking to plan, and on need-payoff questions in the meeting to draw out the future state.
Either choice is acceptable. What matters is that you can explain why you made it.
Think about the last two or three sales you worked on, how long they took and how many people were involved, and use that as you start the activity below.
Write one paragraph on which approach fits the way you sell and why. Include one question from each approach that you will use.
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