I’ve had many discussions with many people about how an interview process should be constructed. As part of that, I try to understand the other person’s why. What, in their view, is the purpose of interviewing? Take a minute and think about your answer, then read on.
Among the answers I’ve heard and read are to:
- decide if we should hire the candidate
- assess the candidate’s fit
- understand the candidate’s skills
- to assess the candidate’s abilities
- to find out if there is rapport
- verify the resume
The poverty of these answers is depressing. What’s so bad? Some of these answers are too shallow and beg the question, e.g. finding out of there is rapport. Why do we want to find out if there’s rapport? Others try to go go too far, establishing an expectation of an interview that it cannot achieve, e.g. deciding if you should hire a candidate. An interview can’t do that, and any advice that asserts that is not actionable. That one in particular is tautological.
There’s ample advice, some good and some bad, about how to interview for specific roles. There’s also a lot of general advice, similarly a mix of good or bad. Almost never are there clearly stated goals that achieve meaningful outcomes while being specific enough to be useful. The advice is just too much of a cargo cult of dogmas, copying, and shallow thinking. Almost nobody seems to have thought deeply about this from a first principles perspective. Absent that clarity, you will struggle to define a good process to hire the right candidates, you will struggle to assess whether it’s working, and you will struggle to improve it.
The good news is that there is a right answer. There is only one purpose to interviewing, which is the same as any other candidate assessment activity: to gather information to help predict future job performance. No more and no less. Every single word in that purpose is necessary, and it is sufficient to determine all of the activities in the candidate assessment. In slightly altered order:
- to gather information: interviewing is a process of discovering, refining, and verifying information. It is not a decision-making tool. It can be a sales pitch and a relationship-builder, but those are purely secondary. If they happen, good, but don’t sacrifice the primary goal to achieve them.
- future job performance: you don’t care about someone’s past performance. You want to know what they’ll do for you. You also don’t want to turn this into a binary question of hire versus no hire. For one, the interview can’t do that; a person has to do that. For another, the expectations can be somewhat flexible; perhaps you’re willing to lower expectations for a candidate who comes more cheaply. In addition, you’re rarely considering only one candidate for a role. The question isn’t whether to hire a particular candidate but rather which candidates do you most prefer of the ones exceeding the minimum.
- to help predict: you don’t care about someone’s past knowledge, skills, projects, education, etc. for their own sake. These are just a means to an end: making a decent prediction about how well the candidate will do the job. No single piece of information will predict everything, nor will any prediction be perfect, hence “help predict.”
You may have found yourself reading the above and thinking, “that’s what I meant, or “we do that,” or something else. I’m 99% sure you were sort of right but also sort of wrong. This is something where “close enough” is actually something else. Doing something vaguely like this is not at all the same as doing exactly this. It’s like saying the Louvre is a museum.
You may also have found yourself reading the above and thinking it’s obvious. I’m 99% sure it wasn’t, which certainty is based on the number of times I’ve heard the right answer versus all the other ones. I’ve found that this is one of those truths that is obscure beforehand and then obvious afterward. That doesn’t mean you knew it all along.
If you cannot explain how an activity in your assessment process provides information that predicts future job performance, you should discard it. Maybe it doesn’t provide information, maybe it’s backward looking, or whatever. On the other hand, if you have an important element of job performance that cannot be predicted from the information your process collects, then you have a problem. Maybe there are elements that are impossible to predict, but I’ve never seen one. All I’ve seen are more predictive, less predictive, and useless.
None of this doesn’t mean you can’t have a sales pitch in your schedule. It’s just not part of assessing the candidate. Your interview process can have multiple activities in it, but it can’t do them well without you having crystal clear goals for each one. The most important one? Gathering information that helps predict future job performance.