No agreed definition of good
Four interviewers, four private ideas of the role. The debrief becomes an argument about the job.
Gut feel costs more than the process it replaces
Unstructured interviewing survives because it feels natural, needs no preparation and sends the cost of getting it wrong into somebody else's budget months later.
What the methodology reports
25.3%lower attrition at PE-backed companies using the methodology.
4.8×return on investment within nine months.
90%+hiring success rate.
Onewritten standard from role definition to debrief.
Source: HireBest customer outcome analysis. Definitions, period and sample must be confirmed internally before publication.
Where unstructured interviews go wrong
Similarity bias
With nothing written down to evaluate against, interviewers reach for the nearest yardstick: usually themselves.
Poor questions
HireBest builds each interview guide from the role's Cipher, giving everyone a consistent basis for comparison.
Nothing written down
HireBest records the interview and keeps the transcript with the candidate's evidence.
The loudest voice decides
Independent ratings make everyone commit to a view before they see the group's.
No feedback loop
If you never recorded why you hired someone, you can never learn from how they turned out.
What structure actually costs you
The usual objection is that structure slows hiring down. In practice, the work moves rather than grows: an hour agreeing what the role needs replaces hours of circular debrief and the far larger cost of unwinding a mis-hire.
The other objection is that structure makes interviews robotic. When interviewers are not inventing the next question and trying to remember the last answer, they can listen properly.
“I thought I was good in recruiting, but came out of this course with a better system for evaluating prospective employees. Very useful and fun!”
Fifteen years of it, written down
Craig della Penna has taught and refined the Cipher methodology for fifteen years. It is now published as Cipher: A Proven Framework to Hire the Best People, and built into software so a team can run it rather than merely agree with it.
Frequently asked questions
How much does a bad hire actually cost?
A poor hire can create recruitment, onboarding, productivity and replacement costs, as well as disruption for the wider team.
What is structured interviewing?
Interviewing where the definition of success is agreed and written down before anyone meets a candidate, every candidate is asked about the same things, and every interviewer rates against that written definition with evidence for each score.
Does structured interviewing really produce better hires?
A 2024 meta-analysis by Wingate, Bourdage and Steel reports that formal structured interviews are generally more valid than unstructured interviews (as at September 2026). Companies applying the Cipher methodology report 25.3% lower attrition and a 4.8x return within nine months.
Does structure make interviews feel robotic?
It does the opposite in practice. An interviewer who is not silently composing the next question can actually listen, so the conversation gets more human, not less.
Where should we start?
With one role. Write a Cipher for it, use it to build the interview guide, and have everyone rate against it independently. The free Cipher tool is enough to try that on a real role without committing to anything.
Wingate, Bourdage and Steel, 2024 meta-analysis of interview structure (checked 28 September 2026).
Try structure on a role you are hiring for
Build a Cipher in minutes, see the whole process in a demo, or read the method in the book.