Behavioral interviewing is a job interviewing technique where candidates are asked to describe past performance and behavior to determine whether they are suitable for a position. Behavioral-based interviewing provides a more objective set of facts to make employment decisions compared to other interviewing methods.
Competency-based behavioral interviews are a widely used mode of job interviewing, there is evidence that both standardization and the use of behavioral questions increase the psychometric properties of interviews.
Competency-based interviews use questions which aim to find out how you have used specific skills in your previous experience and how you approach problems, tasks and challenges.