While almost four out of five companies collect at least some candidate feedback, the Talent Board found that a large number (35.7%) only survey candidates after they’ve been hired. Considering that a tiny percentage of candidates ultimately land a job at the end of the process, this provides a limited window into the experience of most candidates.
For one thing, candidates that do accept an offer are likely to have had a good experience. If they didn’t, they probably wouldn’t have taken the job.
They may also be more inclined to provide positive feedback out of respect for their new employer. It’s hard to anonymize feedback from just one person, so they may gloss over the more negative aspects of their experience for fear of repercussions.