Most sales interviews test what a candidate has done. The research on why hires fail points to something else: who the candidate is.
Ask a hiring manager what they screen for in a sales candidate and the answer is usually the same: years of experience, industry background, a record of hitting quota. These are easy to verify, easy to compare, and easy to defend if the hire doesn’t work out. They are also a weaker guide to success than most teams assume.
Leadership IQ tracked more than 20,000 new hires made by 5,247 hiring managers at 312 organizations. Managers rated 46% of those hires as failures within 18 months, a group that included people who were let go, people who left under pressure, and people the manager said they would not hire again. When managers explained why, 89% of the failures traced back to attitude: coachability (26%), emotional intelligence (23%), motivation (17%), and temperament (15%). Technical competence accounted for just 11%. The study covers all roles rather than sales alone and dates from 2011, so it is best read as a pattern, not a sales benchmark.
Hindsight was part of the story, too. In the same research, 82% of managers said the interview had shown subtle warning signs that the hire would struggle. They were too busy, too focused on other issues, or not confident enough in their interviewing to act on them.
Why the Resume Falls Short in Sales
Gallup’s sales research is older, but it makes the same point from the other direction. Drawing on interviews with more than 250,000 sales representatives across 170 companies in 21 industries, Gallup reported that beyond an initial learning curve, it found no correlation between years of experience and results. Reps with ten years in the field did not outsell reps with five, and in none of the companies studied did education predict sales success. Experience did make people productive sooner, but an average performer with experience simply reached an average level faster.
That fits what most sales leaders have seen firsthand. A resume shows what someone sold, at which company, under which brand, with which pipeline and compensation plan behind them. It does not show whether they will rebuild that success in a different market, with a different buyer, under different management.
What to Evaluate Instead
None of this is an argument against skill. Leadership IQ’s point is that companies are already good at assessing technical skill, and attitude gets far less interview time. In a sales context, the same four traits tend to matter: whether a candidate takes feedback and changes behavior, whether they stay motivated through a long or lost deal, whether they read buyers accurately, and whether their temperament fits the pace and culture of the team.
Questions about specific moments tell you more than general ones. Ask for the last piece of feedback that changed how they sell, a deal they lost and what they did next, or a time a manager and they disagreed. Vague answers are information. So is defining success in the seat before the first interview, since it is hard to judge mindset without knowing which mindset the role calls for.
A Question for Your Next Search
Think about the last few sales hires who didn’t work out. Did they lack the ability to do the job, or did they fail to adapt to it? If it was the second, the interview probably tested the wrong thing.
Sources
Leadership IQ, “Why New Hires Fail” (the Hiring for Attitude study; 2011 hiring-manager study, updated with 2020 HR executive survey)
Gallup, “Education, Experience, and Training” (Zangari and Smith, Gallup Business Journal, December 18, 2000)