The Critical Incident Technique” appeared in the psychological bulletin. Flanagan (1954) defined the critical incident technique as a set of procedures designed to describe human behavior by collecting description of events having special significance and meeting systematically defined criteria. Flanagan originally used trained observers to collect critical incident identification. Identification of the critical incidents during task performance can be a individual process or a mutual process between user and evaluator [9].According to Dessler et. al.(2011),Critical Incident method is keeping a record o