The Interview Went Perfectly. The First 90 Days Were a Disaster.
You have been in this room before. Impressive resume. Crisp answers. Exactly the right experience, at exactly the right companies. They handled the tough questions well. They knew your product category. They charmed the whole panel. You made an offer. They accepted.
And then three months in, something is wrong. The activity is low. The pipeline is thin. The excuses are creative. The one-on-ones feel like negotiations. And by month six, you are having a very different conversation than the one you had in the interview room.
This is not bad luck. It happens so often, across so many companies, that the research has a clear verdict: the interview — the primary tool most companies use to make their most expensive people decisions — is a deeply unreliable predictor of what happens next.
The Interview Problem
A comprehensive meta-analysis published in the International Journal of Selection and Assessment found that job interviews explain only 9% of the variance in job performance.1 Nine percent. The other 91% is determined by factors the interview does not measure.
Google's former SVP of People Operations, Laszlo Bock, was even more direct. After Google analyzed tens of thousands of interview scores against actual job performance, they found — in Bock's words — a "complete random mess."2 The finding led Google to abandon its famous brainteaser interviews entirely and shift to structured behavioral interviews, which Bock described as meaningfully more predictive. Even for one of the most data-sophisticated organizations on earth, gut feel in an unstructured interview predicted almost nothing.
And yet most companies run unstructured interviews. The hiring manager prepares a few questions, maybe. The conversation goes where it goes. Someone "feels right." An offer is made.
The research on predictive validity makes the problem precise. Schmidt and Hunter's landmark meta-analysis of 85 years of personnel selection research found that unstructured interviews predict job performance at barely better than chance — essentially a coin flip. Structured interviews — standardized questions, consistent scoring, pre-defined criteria — more than double that predictive power.3 Most companies never make that upgrade, because the unstructured interview feels like a conversation and conversations feel revealing. They are not.
There is something else underneath this. Research consistently shows that interviewers form strong first impressions within the opening minutes of a conversation — and then spend the remainder of the interview confirming them.4 The candidate who opens well — confident, articulate, warm — has already won. Whether that confidence translates to a full pipeline in Q3 is a separate question entirely, and one the interview never asks.
Why Most Failures Are Not Skill Problems
Here is the finding that should change how every sales leader thinks about their hiring process: according to Leadership IQ's landmark "Hiring for Attitude" study — which tracked 5,247 hiring managers across more than 20,000 new hires — attitudes drive 89% of hiring failures, while technical skills account for only 11%.5
Eleven percent. Which means 89% of the time, when a sales hire fails, it is not because they could not do the technical job. It is because of attitude, coachability, motivation, judgment, or cultural fit — things that are almost impossible to assess in a traditional interview, and almost impossible to miss when you are watching someone work.
The study identified the five specific causes of failure in order: inability to accept feedback (26%), poor emotional intelligence (23%), insufficient motivation (17%), wrong temperament for the role (15%), and — last on the list — lacking the necessary technical skills (11%).6 None of these show up in a polished interview. All of them show up in the first 90 days.
I learned this the hard way — and then the good way — early in my career leading a sales team at a telecom. I was a front-line sales manager hiring account executives, and I made an offer to a candidate that most hiring managers would have passed on before the second page of his resume. He had no technology experience. He did not know our customers. He had never worked in an office. What he had done — for years, entirely on 100% commission — was sell athletic shoes out of the trunk of his car. No base salary. No territory. No safety net. He hustled every day because he had to. What I saw in the interview was not a polished technology salesperson. What I saw was someone who understood, at a bone-deep level, how to find a customer's pain and close a deal. Someone who was hungrier than anyone else I had ever met. Someone who, when I asked him how he handled a stretch of bad weeks, described exactly how he recalibrated — not who he blamed. And someone who, when I described the team culture, leaned in rather than nodding along. Within twelve months, he was our top performer. He stayed there long after I left the company. He led the team in activity metrics every single month. And culturally, he was everything the role required — generous with teammates regardless of their title, humble, and genuinely invested in the team winning, not just himself. His resume said he sold runners from the trunk of a car. The conventional hiring checklist said he was a bad bet on every dimension that checklist measured. And he turned out to be the best hire I made in that chapter of my career — because I was paying attention to the things that actually predict performance, not the things that are simply easy to see on paper. What I was reading for — without having named it yet — was a set of criteria that have guided every hire I've made since: will, processing power, adversity quotient, cultural fit, and skill. In that order. This is the trap. Companies screen for the things interviews can reveal — experience, industry knowledge, communication style — and make decisions based on them. Then they are blindsided by the things interviews cannot reveal, which is where the actual failure lives.
The Cost Nobody Calculates Correctly
Most companies dramatically underestimate what a bad sales hire actually costs. They think about recruiting fees, onboarding time, and base salary. The math stops there. It should not.
The Sales Benchmark Index has calculated that a mis-hired sales representative earning $100,000 base can cost a company over $1 million once you factor in lost customers, pipeline mismanagement, and opportunity cost from the revenue that should have been generated during the tenure.7 One hire. One million dollars. And that assumes you figure it out within a year.
Run the full calculation. Recruiting costs and fees: approximately $25,000. Onboarding and ramp time — typically six months to full productivity — during which the rep is generating a fraction of expected revenue. The salary you paid while waiting for results that never came. The deals that were lost or mishandled. The customers who experienced poor service and went elsewhere. The manager who spent 17% of their time — nearly a full day per week — supervising underperformance instead of developing the rest of the team.8
Add it up, and one bad sales hire over 12 to 18 months can represent well over $1.3 million in combined hard costs and opportunity loss.9 For a $20M company with a five-person sales team, that is not a rounding error. That is a material event.
And yet the hiring process that produced this result gets run again next time with no modifications, because no one built a system to measure it.
The Onboarding Problem Nobody Talks About
Here is where the story gets more complicated, because the interview is not the only place where the hiring trap springs.
Even when companies make a genuinely good hire — someone with the right will, the right skill, and the right attitude — they frequently set that person up to fail through the absence of a real onboarding process. The new rep arrives. They are handed a laptop, a product deck, and a Salesforce login. They shadow a few calls. Then they are sent into the field and expected to produce.
Aberdeen Group's Onboarding 2011: The Path to Productivity found that organizations with a structured onboarding process experience 54% greater new hire productivity and 50% greater new hire retention.10 More than half of new hire failures happen not because the wrong person was hired, but because the right person was never properly set up. They were hired into a gap, not into a system.
Industry surveys consistently find that roughly 28% of new employees leave before their first 90 days.11 Some of those are bad hires who realized the fit was wrong. But a meaningful portion are capable people who looked around, saw no structure, no clear path to success, no real coaching, and decided their talent was better deployed elsewhere. They were right.
The interview gets the blame when a hire fails. Onboarding rarely does. But onboarding is where the hire either becomes productive or becomes a statistic.
The Interview and the First 90 Days Are One Problem
This is the insight that ties all four failure modes together. The interview problem and the onboarding problem are not separate. They are two ends of the same broken system.
Companies hire on feel because they have not defined what success in the role actually looks like. They cannot build a structured interview around criteria they have never articulated. And because they have never articulated what success looks like, they also cannot build an onboarding process oriented around producing it. The new hire walks into ambiguity at the offer stage and is still in ambiguity at day ninety.
The fix is not a better set of interview questions, though that helps. The fix is working backwards from a clear definition of what the role requires — not just what the job description says, but what behaviours, skills, and attributes distinguish a top performer in this specific company, at this specific stage, selling this specific product to this specific buyer. That profile becomes the foundation of the interview criteria, the onboarding plan, and the 90-day performance benchmarks.
Without that foundation, you are doing two things simultaneously: selecting candidates through a process that is barely better than a coin flip, and setting the ones you select up to fail in their first quarter. The result is the pattern every sales leader recognises but few diagnose correctly — high turnover, inconsistent performance, and the persistent belief that the right hire is just one more search away.
It is not. The right hire requires the right system around them. Build the system first.
The Draft Board: Five Criteria. Every Candidate. No Exceptions.
Over the course of more than two decades hiring sales professionals, I developed a framework I now call The Draft Board. Five criteria, applied to every candidate, in every role, without exception. The order is deliberate — it reflects what the research says about where hiring failures actually come from, and what I have seen play out across hundreds of hiring decisions.
1. Will. Do they want it badly enough? This is not about enthusiasm in the interview room — anyone can perform enthusiasm for forty-five minutes. It is about the drive that shows up on a Tuesday in October when the quarter is sideways and the pipeline is thin. Leadership IQ's research found that insufficient motivation accounts for 17% of new hire failures. But in sales specifically, the number feels low. A rep without genuine will does not just underperform — they drain the energy of everyone around them. Will cannot be trained. It has to be present at hire.
2. Processing Power. How fast do they think under pressure? Can they absorb coaching and translate it into changed behaviour within days, not weeks? The Leadership IQ data shows that the single largest cause of new hire failure — 26% — is the inability to accept and implement feedback. That is a processing power problem as much as an attitude problem. The rep who can hear a correction on Monday and demonstrate improvement on Tuesday is worth far more than one who needs three performance reviews to move. In complex B2B sales, processing power is the difference between a rep who learns the territory and one who is perpetually starting over.
3. Adversity Quotient. Can they take a hit and keep going? Sales is an adversarial environment. There are lost deals, difficult customers, cold streaks, and quarters that do not cooperate. Research identifies poor temperament under pressure as the cause of 15% of new hire failures — but the more precise question is what someone does in the moment after a bad outcome. Do they recalibrate, or do they spiral? Do they bring the team back to centre, or do they drag it down? The candidate who can describe a stretch of genuinely bad weeks — specifically, without deflection, with a clear account of how they responded — is telling you something that no resume line ever will.
4. Cultural Fit. Do they make the team better, or do they just fit in? There is a difference. Leadership IQ's data attributes 23% of new hire failures to poor emotional intelligence — the inability to understand their own emotions and read the emotions of others. But the criterion I use goes one step further: I am not looking for someone who will tolerate the team culture. I am looking for someone who will actively contribute to it. Someone who is generous with colleagues, who operates with a team-before-self mentality, and who understands that their success and their teammates' success are not competing interests. A technically proficient rep who poisons the culture is not an asset. They are a liability with a good quota number.
5. Skill. Can they do the job? This is last. Deliberately. The Leadership IQ research is unambiguous: only 11% of new hire failures are caused by insufficient technical skill. Skill is the criterion that dominates most interview processes — the one that gets the most questions, the most scrutiny, the most weight in the debrief — and it is the least predictive of whether the hire will succeed. Skill can be developed. It can be trained, coached, and built over time. Will cannot. Processing power cannot. Adversity quotient cannot. When you find a candidate with the first four criteria present at a high level, the absence of perfect technical skill is a solvable problem. When you find a candidate with exceptional skill and none of the first four, you have hired a ticking clock.
The candidate who sold athletic shoes from the trunk of his car had no score on the conventional skills checklist. What he had was Will at a level I had rarely seen, Processing Power that let him absorb the product and the market faster than anyone expected, an Adversity Quotient built by years of 100% commission with no safety net, and a cultural contribution that made the entire team better. Skill was the one thing he was missing. It was also the one thing I was least worried about.
Structure your interview process around these five criteria — in this order. Build your onboarding plan to develop Skill while reinforcing the first four. Define your 30-60-90 day milestones before the hire starts, not after. And measure whether your process is working: track interview scores against six-month performance. If they do not correlate, something in the process needs to change.
None of this is complicated. Almost none of it is standard practice.
If you are preparing to hire a sales rep or sales leader and want to build a process that actually predicts what happens next, I would be glad to have that conversation.
Andrew Devlin is the founder of ScaleTech CRO Ltd. and a Sales Xceleration Certified Advisor (President's Circle). With 25+ years of sales leadership experience at Cisco, Cloudflare, Splunk, and TELUS — and more than $2B in revenue generated — he works as a fractional VP of Sales for B2B companies between $10M and $100M in revenue who are ready to move beyond founder-led growth. He also teaches B2B Sales at Okanagan College in Kelowna, BC. Learn more at andrewdevlin.co.
Sources
1. Wingate, T.G., Bourdage, J.S., & Steel, P. (2024). "Evaluating interview criterion-related validity for distinct constructs: A meta-analysis." International Journal of Selection and Assessment. DOI: 10.1111/ijsa.12494. N=30,646.
2. Laszlo Bock, SVP People Operations, Google. Quoted in: "In Head-Hunting, Big Data May Not Be Such a Big Deal," The New York Times, June 19, 2013. Bock's analysis covered tens of thousands of Google interview scores compared to subsequent job performance.
3. Schmidt, F.L. & Hunter, J.E. (1998). "The Validity and Utility of Selection Methods in Personnel Psychology: Practical and Theoretical Implications of 85 Years of Research Findings." Psychological Bulletin, 124(2), 262–274. Validity coefficients: unstructured interview .38, structured interview .51.
4. McDaniel, M.A. et al. (1994). "The Validity of Employment Interviews: A Comprehensive Review and Meta-Analysis." Journal of Applied Psychology, 79(4), 599–616. See also: Wingate et al. (2024), ibid.
5. Leadership IQ. "Why New Hires Fail" / Hiring for Attitude, Mark Murphy, CEO of Leadership IQ. Study tracked 5,247 hiring managers from 312 organizations, assessing outcomes of 20,000+ new hires. Reported in Fortune and Forbes.
6. Ibid. Failure causes in order: coachability 26%, emotional intelligence 23%, motivation 17%, temperament 15%, technical skills 11%.
7. Sales Benchmark Index, cited in TestGorilla, "How 90% of Employers Cut Mis-Hiring with a Skills-Based Approach" (2024). Assumes rep earning $100,000 base salary.
8. CareerBuilder survey (2014), cited in Apollo Technical, "The Cost of a Bad Hire and Red Flags to Avoid" (2026). Finding: 34% of CFOs report managers spend 17% of their time supervising poorly performing employees.
9. SBI Growth, "The Cost of a Bad Sales Hire: A Million-Dollar Mistake." Full cost model including recruitment, ramp, salary, opportunity cost, and client impact over 12–18 months.
10. Aberdeen Group. Onboarding 2011: The Path to Productivity. Mollie Lombardi, Senior Research Analyst, Human Capital Management. Published March 2011; findings corroborated in subsequent HR research.
11. Preppio, "What Scientific Research Says About Employee Onboarding" (citing Jobvite 2018 survey data and multiple industry sources). See also: Hirsch, A. (2017). "Don't Underestimate the Importance of Good Onboarding," SHRM.