The Stockholm effect, also known as Stockholm syndrome or hostage complex or hostage syndrome, is a complex in which the victim of a crime becomes emotionally attached to the perpetrator and even helps the perpetrator in turn. This emotion causes the victim to become attached to the perpetrator, dependent on the perpetrator, and even to assist in the perpetration of the crime against another person. What kind of person develops Stockholm Syndrome? The FBI hostage database shows that approximately 27% of hostages exhibit symptoms of Stockholm syndrome. According to psychologists, people who are emotionally dependent and easily moved are prone to develop Stockholm syndrome if they encounter similar situations. Stockholm syndrome, usually has the following characteristics: 1, the hostage must have a real feeling that the kidnapper (perpetrator) threaten their survival. 2, in the process of being held hostage, the hostage must experience the kidnapper (perpetrator) may be a small act of favor. 3. The hostage must be isolated from all other points of view except the single point of view of the kidnapper (usually no information from the outside world). 4, the hostage must believe that it is impossible to escape. And usually Stockholm syndrome will go through the following four processes: 1, fear: because of the sudden coercion and intimidation caused by the current situation change. 2, fear: enveloped in an uneasy environment, both physically and mentally threatened. 3, sympathy: and the hostage for a long time together to understand that the other party had to act, and did not suffer ‘direct’ harm. 4, help: to give the hostage intangible help such as cooperation, not to escape, reassurance, etc.; or tangible help such as assistance to escape, to the judge, together with the escape, etc.