Most Leaders Can't Interview and It's Costing You Everything
Nobody taught you how to do this
You’ve been interviewing candidates for years. Maybe decades. You’ve sat across from hundreds of people, asked your favorite questions, gotten a feel for who’s sharp and who isn’t, and made your call. You trust your gut. You think you’re good at it.
You’re probably not.
Research spanning eighty-five years — compiled by Frank Schmidt and John Hunter across thousands of studies — found that unstructured interviews are one of the worst predictors of actual job performance. Worse than aptitude tests. Worse than personality assessments. The interviews most leaders run every week rank barely above checking someone’s references or counting their years of experience, both of which predict almost nothing.
And yet, fifty-seven percent of hiring professionals rank the interview as the single most important factor in their hiring decision. We’ve built our entire hiring process around the tool we’re worst at using.
You’re deciding before they sit down
A study at the University of Toledo recorded job interviews on video, then showed only the first fifteen seconds — the knock on the door, the walk in, the handshake — to a separate group of observers. Those observers, watching nothing but fifteen seconds of footage, predicted the outcome of the full interview on nine out of eleven traits evaluated.
Fifteen seconds. Before a single question was asked.
Other research puts it at ninety seconds. A third of hiring managers admit they’ve already made their decision within a minute and a half of meeting someone. Five percent decide in the first minute. The remaining thirty or forty-five minutes? That’s confirmation. You’ve already decided, and now you’re spending the rest of the interview proving yourself right.
Daniel Kahneman spent a career studying this. He called it System 1 thinking — fast, intuitive, effortless. Your brain pattern-matches the candidate against some internal template of “good hire” and gives you a feeling. That feeling is what most leaders call instinct. What it actually is, more often than not, is bias dressed up as experience.
The nice interviewer problem
Here’s something nobody talks about in hiring: a lot of leaders are just too nice to interview well.
They don’t want to make it awkward. They don’t want to press when someone gives a vague answer. They don’t want to be the one who says no, so they score the candidate favorably and pass them to the next round. The conversation felt good. The person was pleasant. That must mean something, right?
It doesn’t. A pleasant conversation tells you someone is pleasant. It tells you nothing about whether they can do the job, handle pressure, or think on their feet when a client situation is going sideways.
I’ve interviewed people who couldn’t give a straight answer to a direct question. They’d ramble for five minutes, circle around the point without ever landing on it, and never once offer a specific example of how they actually handled a problem. And in plenty of organizations, that person would still get hired — because the interviewer didn’t want to push, didn’t know how to redirect, or confused friendliness with competence.
Thirty-eight percent of hiring professionals have never received any interview training. Not some. Not a few. Nearly four in ten people making hiring decisions have never been taught how to actually evaluate a candidate. They’re winging it, and they don’t know they’re winging it, because nobody told them there was a better way.
What I actually listen for
When I interview someone, I ask about specific scenarios. Real situations they’ve been in, with real stakes. And I’m not listening for the textbook answer. Everybody knows the right answer in theory. What I’m listening for is the detail around the answer — the small decisions that tell me how this person actually operates.
Did they mention pulling in customer success when an issue escalated, or did they try to handle everything themselves? Did they pick up the phone instead of hiding behind an email? When something started going off the rails with a client account, did they send a heads-up to senior leadership — a “no surprises” notice — before it blew up? Or did they wait until someone was already asking questions?
Those details aren’t things you can rehearse. They come from people who’ve actually done the work and thought about how to do it well. The candidate who tells me “I escalated it to my manager” has followed a process. The candidate who tells me “I flagged it to the VP before the Monday review because I didn’t want her blindsided when the client’s CEO called” — that person has judgment. That’s the difference I’m screening for.
And when someone can’t give me any of that? When every answer is theoretical, or they keep circling back to what they “would” do instead of what they’ve done? That tells me plenty too.
The culture fit trap
“Culture fit” is one of the most dangerous phrases in hiring. It sounds reasonable. Who wouldn’t want to hire someone who fits the culture? The problem is what it actually means in practice.
Research from LinkedIn found that interviewers evaluating culture fit are often looking for “potential friends and playmates rather than those with the best work experience or job-relevant skills.” They favor people who look like them, sound like them, went to similar schools, share similar interests. It’s affinity bias wearing a business-casual label.
And the definitions are inconsistent. In one study, some interviewers defined “collaboration” as agreeing quietly and going along. Others defined it as pushing back and bringing different viewpoints. Both groups used the same word to justify completely different hiring decisions. When your evaluation criteria can mean opposite things to different people, you don’t have criteria. You have a vibe check.
McKinsey found that companies in the top quartile for diversity were thirty-five percent more likely to outperform their industry financially. The data doesn’t support hiring people who fit in. It supports hiring people who add something different.
What happens when you hire wrong
Three out of four employers admit they’ve made a bad hire. The cost, depending on whose research you use, runs anywhere from thirty percent of that person’s first-year salary to two and a half times their salary if you catch it within six months. For a sixty-thousand-dollar role, that’s somewhere between eighteen thousand and a hundred and fifty thousand dollars when you factor in recruiting, onboarding, lost productivity, and the impact on the team around them.
But the numbers undersell it. I’ve had to fix teams that were built on bad hires, and the human cost is worse than the financial one.
When you start making changes — moving people out who should never have been hired, or who’ve been coasting for years — the team doesn’t see a performance problem being addressed. They see their friends getting pushed out. They see someone who’s been there for eight years suddenly gone, and they wonder if tenure means nothing. They read it as a new leader cleaning house, or worse, targeting people based on salary or seniority.
The reality is usually simpler and harder: this person was never right for the role, or they stopped growing three years ago and nobody addressed it because addressing it is uncomfortable. But by the time you’re dealing with it, the damage is layered. The coaster has relationships. They’re liked. They don’t cause problems — they just don’t do much. So when you finally make the call, the team is confused because everything “seemed fine.”
That confusion is a direct consequence of bad interviewing upstream. Someone sat across from this person years ago, had a nice conversation, went with their gut, and created a problem that a future leader would have to clean up at significant cost to morale and trust.
The science says structure works
Schmidt and Hunter’s meta-analysis found that structured interviews predict job performance at a .51 validity coefficient. Unstructured interviews sit at .38. That’s a thirty-four percent improvement just by asking consistent questions in a consistent order and scoring responses against defined criteria.
Google ran their own analysis internally. They found that four structured interviews predicted candidate success with eighty-six percent confidence. Adding a fifth interviewer bumped it by one percent. They also found — and Laszlo Bock said this publicly — that brainteasers were “a complete waste of time” with zero correlation to job performance. GPA and test scores? No predictive value for anyone more than two years out of school.
Kahneman figured this out decades ago when the Israeli military asked him to fix their recruiting process. He was a young lieutenant. He built a structured approach: specific criteria, standardized questions, each trait scored independently before moving to the next. When he returned to the base decades later, after winning the Nobel Prize, they were still using his system — backed by forty-seven years of data proving it worked.
The through line across all of this research is simple: when you let interviewers run the conversation however they want, they make worse decisions. When you give them structure, they make better ones. This isn’t a close call. The evidence has been piling up for almost a century.
What needs to change
This isn’t complicated. It’s just uncomfortable because it asks leaders to give up something they’re attached to — the belief that they can read people.
Train your interviewers. Four in ten have never been trained. That’s not a gap. That’s negligence. If you wouldn’t let someone manage a budget without basic financial training, don’t let them make six-figure hiring decisions without knowing how to evaluate a candidate.
Use structured interviews. Same questions for every candidate for the same role. Defined scoring criteria. Each interviewer scores independently before comparing notes. This alone eliminates a huge amount of noise and bias.
Stop hiring for “fit.” Hire for what someone adds, not how similar they are to the people you already have. Define your values clearly enough that two interviewers using the same criteria would reach the same conclusion. If they wouldn’t, your criteria aren’t criteria.
Listen more than you talk. The candidate should be talking eighty percent of the time. If you’re spending the interview selling the role or telling your own war stories, you’re not evaluating anyone. You’re performing.
Push for specifics. When someone gives you a theoretical answer, redirect. “Tell me about a time you actually dealt with that.” If they can’t, that’s data. Don’t fill the silence for them and don’t give them credit for a nice-sounding answer that doesn’t have anything behind it.
Limit the rounds. Google proved that four interviews is the sweet spot. Everything after that is diminishing returns. Marathon interview processes don’t produce better decisions. They just exhaust candidates and slow down hiring.
The uncomfortable math
Seventy-five percent of employers admit they’ve hired wrong. A third of interviewers decide in under two minutes. Nearly forty percent have never been trained. And the most common interview format — the unstructured conversation — is scientifically one of the least effective tools we have for predicting whether someone will actually succeed in a role.
We keep doing it this way because it feels right. Because leaders like the autonomy of running an interview their way. Because “I’ve got good instincts about people” is a story that’s hard to let go of, even when the data says otherwise.
The cost shows up later. It shows up in teams you have to rebuild. In performers demoralized by dead weight they’ve been carrying. In the brutal, awkward process of managing out someone who should never have been there in the first place — while the team watches and wonders who’s next.
You can’t fix a bad hire cheaply. But you can fix how you hire. The research has been telling us how for decades. The question is whether leaders are willing to stop trusting their gut long enough to listen.
— Bruno