Trade across differing priorities

Give on what you value less to get what you value more — and have them do the same.

Why it works

When two sides rank issues differently, each can concede on a low-priority issue to win a high-priority one, so both gain net value with no real sacrifice (logrolling). Differences in priorities, not similarities, are the engine of integrative value.

How to do it

1. List all issues and privately rank each by importance to you.
2. Probe their rankings, then offer trades: your low-priority for their low-priority.
3. Bundle issues so you can trade across them rather than settling each in isolation.

Evidence

Logrolling / trading on priority differences to reach integrative outcomes is a well-established finding in negotiation research. Pruitt and Lewis showed experimentally that negotiators who exchange concessions across differently-ranked issues reach measurably higher joint profit than those who compromise issue by issue. (observational)

Requires multiple issues and genuinely differing priorities; with a single issue there is nothing to trade across.

Sources

• Froman, L. A., Jr., & Cohen, M. D. (1970). Compromise and logroll: Comparing the efficiency of two bargaining processes. Behavioral Science, 15(2), 180–183.
• Pruitt, D. G., & Lewis, S. A. (1975). Development of integrative solutions in bilateral negotiation. Journal of Personality and Social Psychology, 31(4), 621–633.

Common mistake

Negotiating each issue separately and splitting every one down the middle, which forfeits the gains from trading across them.