She testified concerning the various techniques used by law enforcement during interrogations to create a stressful environment and convince a suspect to confess. She noted that due to stress suspects may not be thinking properly and may just repeat what they think the interrogating officers want to hear. Additionally, certain interrogation tactics, such as presenting false evidence or lying to suspects, lead to a high level of errors, such as unreliable information and false confessions. In her opinion some of the tactics used in the interview of defendant were coercive and could lead to a false confession. C. Rebuttal