The following technique(s) is based on the critical incident approach.

Behaviorally anchored rating scales (BARS) and Critical incident techniques are based on the critical incident approach.
BARS is designed to bring the benefits of both quantitative and qualitative data to employee appraisal process.
Critical incident technique is a method of gathering facts (incidents) from domain experts or less experienced users of the existing system to gain knowledge of how to improve the performance of the individuals involved.