Principles are a start. Real negotiations also turn on preparation, numbers, timing and trust. This level looks at the practical moves negotiators make and some of the ethical questions they raise.

Preparation

Most experienced negotiators say that most of the work happens before you sit down. Good preparation includes:

• Your interests and priorities. What matters most, and what could you trade?
• Your BATNA and your reservation point, the worst deal you would accept before walking away.
• Their likely interests and BATNA. What pressures are they under? What would make a deal attractive to them?
• Objective criteria: prices, precedents and standards you can cite.
• Options you could propose that would create value for both sides.

If the seller's reservation point is below the buyer's, there is a range in which any price would leave both better off than walking away. Negotiators call this the zone of possible agreement, or ZOPA. If there is no overlap, no deal makes sense, and the honest outcome is to part on good terms.

Anchoring

Psychologists have found that people's estimates are pulled toward whatever number they hear first, even an arbitrary one. This is called anchoring. In negotiation, the first offer tends to pull the final agreement toward it. That is why many negotiators advise making an ambitious but defensible first offer when you know the market well. If you do not have good information, letting the other side go first can be safer. If the other side opens with an extreme anchor, the usual advice is not to haggle from it but to name it as unrealistic and reset the discussion around objective criteria.

Concessions

Concessions are the moves by which parties close the gap. Common advice includes: do not give something for nothing, but trade concessions (“I can move on price if you can move on delivery date”); make concessions smaller as you approach your limit, which signals that you are near it; and avoid big early concessions, which can raise the other side's expectations. Above all, concede on things you value less and they value more.

The ethics of bluffing

Is it acceptable to mislead in a negotiation? Views differ. Some writers have argued that bargaining is like a poker game with its own rules, where everyone expects some bluffing. Others hold that lying is wrong at the table as anywhere else. A common middle view distinguishes kinds of statements. Most people accept that you need not reveal your reservation point, and that some puffery (“this is a great car”) is expected. But lying about material facts, such as hiding a known defect or inventing a rival offer, is widely seen as unethical and in many places can let the other side undo the contract or count as fraud. There is also a practical point: reputation follows you, and people who are caught lying find future negotiations much harder.

Cross-cultural differences

Cultures differ in negotiating customs. The anthropologist Edward T. Hall distinguished high-context cultures, where much meaning is carried by relationships, setting and what is left unsaid, from low-context cultures, where meaning is expected to be spelled out explicitly in words. Negotiators from high-context settings may expect more time spent building a relationship before business, and may say no indirectly. Others may value directness and see small talk as delay. Cultures also vary in attitudes to time, hierarchy and contracts.

These patterns are useful but dangerous if treated as rules. Individuals vary widely within any culture, and a negotiator who treats a person as a stereotype will misread them. The best use of cultural knowledge is to prompt questions and patience, not to predict what a particular person will do.

Worked example: buying a used car

Dana wants to buy a used car from a private seller, Luis, who has listed it for 9,000. Watch how the practical tools work.

Preparation. Dana checks prices for similar cars and finds they sell for 7,500 to 8,500. She has a second option: a dealer will sell her a comparable car for 8,600 with a short warranty. That is her BATNA, so her reservation point is about 8,400 for Luis's car without a warranty. She guesses Luis wants a quick sale because the listing says he is moving.

Anchoring. Dana makes the first offer, ambitious but defensible: “Similar cars are going for 7,500 to 8,500. With the tires needing replacement soon, I can offer 7,400.” She anchors with a number and a reason, citing objective criteria.

Concessions. Luis counters at 8,700. Dana moves to 7,800, then to 8,000, making each step smaller. She trades rather than gives: “I can go to 8,100 if you can have it ready by Friday, before you move.” Timing matters more to Luis than to her. They settle at 8,100. The ZOPA existed: Luis would have taken 7,900 rather than miss his move.

Ethics. Dana did not reveal her reservation point. That is acceptable on almost any view. Suppose instead she had invented a “cousin selling the same car for 7,000.” That would be a lie about a material fact. And if Luis knew the transmission was failing and hid it, he would cross a line that in many places counts as fraud.