Define the gap before you meet a single candidate
The useful starting question is not who would strengthen the board but what the board currently fails to do. Boards drift towards sameness, because candidates arrive through the networks of existing members and each addition tends to resemble the people who proposed them. An honest audit of the past year's minutes usually reveals the gap precisely: the decisions that went through without one hard question, the topics where the board defers entirely to the executive, the risk nobody owns. Write that gap down as the specification. A candidate assessed against a gap can fail the assessment, which is exactly what makes the exercise worth doing; a candidate assessed against an impressive CV almost never does.
Independence is behaviour, not a box on the governance report
A director can satisfy every formal independence test and still be structurally incapable of dissent: appointed through the chair's network, hoping for a second seat from the same circle, socially adjacent to the people they are meant to challenge. The evidence that matters is behavioural, and it exists if you look. Ask what the candidate has actually opposed in previous roles, and what the opposition cost them. A director who has never been in the minority on anything has either sat on remarkably harmonious boards or has treated agreement as part of the job description. Neither reading argues for the appointment.
What references will not volunteer, and how to ask
- Referees describe preparation, presence and collegiality unprompted. Ask instead for the specific occasion the candidate changed a board's mind, and listen for whether the example is concrete or reconstructed.
- Ask how the candidate behaved in the worst quarter the referee shared with them, because directors are appointed for the good years and tested by the other kind.
- Ask why the candidate left each previous board, then check the answer with someone who stayed.
- Ask what the candidate is like when they are wrong, the trait no CV records and every boardroom eventually discovers.
- Treat hesitation as content. People rarely say a former colleague was ineffective on a board; they say the role was not quite right, and mean the same thing.
Chemistry recruits a colleague. Challenge recruits a director.
Nearly every stage of a board search filters for agreeableness: the candidates who make interviews pleasant advance, and interviews measure charm far more reliably than they measure judgement. The candidate the whole board warms to is often the one who has learned to be warming, and the mild discomfort a sharper candidate produces in conversation is frequently a preview of exactly the challenge the board said it wanted. The balance is real, because a director who cannot work with the grain of a board achieves nothing. But if the shortlist ranking matches the likeability ranking exactly, the process has measured chemistry and called it merit.
The perspective serving chairs and directors bring
Experienced chairs reviewing an appointment from outside tend to test three things the internal process undercounts. Whether the candidate has capacity in reality rather than on paper, because a portfolio of six boards means your crisis will compete for their weekend. Whether the appointment solves the board's gap or the chief executive's comfort. And whether the board has confused profile with contribution: the marquee name that lifts the annual report may arrive lightly prepared four times a year. Independent input before the offer is far easier than the alternative, because removing a director is among the slowest and most public corrections in corporate life.