There is a widespread notion of the effective team: that it consists of people who agree on most things and work together smoothly because they think alike. The idea is understandable, but it rarely holds.
The strongest teams are not the ones whose members resemble each other most. They are the ones whose members complement each other best.
Uniformity creates blind spots
When a team consists of people with the same strengths and the same way of thinking, a comfortable but risky uniformity develops. Everyone agrees, because everyone sees the same thing. There is little conflict, but also little new perspective.
A team of imaginative, visionary profiles can generate plans indefinitely, but may lack anyone to carry them out. A team of thorough, detail oriented profiles delivers solid work, but may miss the larger opportunities because nobody lifts their gaze. The result is a team that is strong in one area and systematically weak in another.
What complementarity means in practice
A complementary team is composed so that its members' strengths cover each other's weak points. Some generate the ideas, others execute them. Some see the detail, others hold the overview. Some drive the pace, others ensure the quality keeps up.
The point is not that everyone should be equally good at everything. Quite the opposite. The point is that the team as a whole must cover the full range, precisely because no individual member does. When that works, the team compensates for the limitations each person inevitably has.
Drivers matter as much as strengths
Complementarity is not only about what people are good at, but about what drives them. Some are motivated by results and competition. Others by helping and building relationships. Others again by understanding, analysing and going deep.
A team where these drivers are all represented has a built in balance. Someone pushes forward, someone holds the group together, and someone ensures the decisions are properly considered.
It can be argued, however, that differing drivers also create friction. The results oriented member may experience the relationship oriented one as slow, and the other way round. A complementary team therefore requires that the differences are understood and named. Otherwise they become irritation rather than strength.
Most teams are not designed, they accumulate
Something rarely acknowledged is that few teams are deliberately composed. They have formed over time as people were hired one by one, often without much thought for how the new person complements the existing ones.
The result is arbitrary. Some teams happen to strike a good balance. Others end up skewed, with too many of one profile and too few of another. And because we tend to hire people who resemble us, the imbalance usually deepens over time.
From accident to deliberate composition
The alternative begins with insight. As long as the team's composition remains invisible, it cannot be worked with deliberately. Mapping each team member's strengths, drivers and conflict style provides a shared language and a concrete picture of what the team consists of.
When composing a team try asking these questions:
Where do we complement each other well?
Where are we too alike?
Which perspectives are missing when we make decisions?
Who handles the things none of us naturally reach for?
Our experience is that these conversations move a team from being an arbitrary collection of people to being a considered unit. The best team is not the one where everyone is alike. It is the one where difference has been put to work, so that individual strengths become the strength of the whole.