Information acquired during an investigation has to contain enough important details. In order to achieve this objective, psychologists have tried to create procedures, particularly for the interview of witnesses. This process is based on two assumptions. First is that the witness in an interview is basically making an effort to remember the events that took place. Hence everything that can assist the process of remembering should be given much importance. Second is the interaction between the investigator and the witness (Canter & Youngs, 2009). Interactions that are encouraging and accommodating tend to acquire more relevant information. The cognitive interview (CI) has been created to improve these two.