What is the primary purpose of the "good cop, bad cop" technique?

The "good cop, bad cop" technique primarily serves to create psychological pressure to elicit a confession from a suspect. This method involves two interrogators taking on opposing roles: one adopts a tough, aggressive demeanor representing the "bad cop," while the other is empathetic and supportive as the "good cop." This dynamic aims to make the suspect feel vulnerable and anxious due to the perceived severity of the situation instigated by the bad cop's harshness, while simultaneously offering a sense of relief and trust through the good cop's more compassionate approach.

As the good cop attempts to build rapport and foster communication, the suspect may start to feel that there is a way out of their predicament, particularly if they believe the good cop could help them. This combination of intimidation and support leverages the suspect's psychological state, increasing the chances of eliciting a confession or obtaining critical information. Ultimately, the successful application of this technique lies in balancing the tension created by the bad cop with the relief offered by the good cop, compelling the suspect to respond in ways they might not have otherwise considered.