Predictive Validity Of Coding Interviews

Why HackerRank Scores Don't Predict On-the-Job Performance

A high HackerRank score tells you a candidate can solve timed algorithm puzzles. It says surprisingly little about whether they can do the actual job. Here is why the correlation is weak and what to measure instead.

The Bar-Raiser Problem: Why Your Interviewers Disagree and How to Calibrate Them

Two engineers interview the same candidate and reach opposite verdicts. That disagreement is usually a measurement problem, not a candidate problem. Here is where scoring drift comes from and how shared rubrics and recorded sessions calibrate a panel.