There are two interrogation methods: information gathering and accusatory. Information gathering is used in the UK, New Zealand, Australia, and Western Europe, and is characterized by report production, truth-seeking, and active listening. The accusatory approach is used mainly in the United States and Canada, and focuses on accusation, confrontation, psychological manipulation, and rejection of denials.
The interrogation of suspects is very important to ensure conviction of the guilty and release of the innocent. However, police interrogations can result in false confessions, as has been documented in several countries.
It should be noted, however, that police interrogation is banned in several Latin American countries, although it continues to be a technique applied in the context of investigative and judicial police functions.