Collaborating (assertive and cooperative)

Work the underlying interests until you find a solution that genuinely meets both sides’ needs.

Why it works

Collaboration maximizes both axes: you hold your own needs firmly while fully engaging theirs, digging beneath stated positions to the underlying interests where creative, mutual-gains solutions live. It produces the best outcomes and strongest relationships but costs the most time and trust, so it’s reserved for issues important enough — and relationships durable enough — to justify the investment.

How to do it

1. Surface the interests behind each position ("why does that matter to you?"), not just the demands.
2. Treat it as a shared problem to solve together rather than a contest to win.
3. Invest the time — collaboration fails when rushed into a disguised compromise.

Evidence

The collaborating/integrating mode aligns strongly with interest-based negotiation research (the integrative, mutual-gains approach), which has real support for producing better joint outcomes than positional bargaining. The TKI label itself is from a self-report model. (observational)

Collaboration is costly and not always warranted; on trivial or time-critical issues it’s overkill, and it requires good faith from both sides.

Sources

• Fisher & Ury, "Getting to Yes" — interest-based (integrative) negotiation; negotiation research on integrative vs. distributive outcomes

Common mistake

Calling a quick compromise "collaboration" — splitting the difference on positions without ever exploring the underlying interests where the real win-win lives.