When attempting to diffuse a suspect's alibi, which technique is recommended?

The recommended technique of discussing the accused's prior deceptions is effective because it can subtly prompt the suspect to reconsider their alibi without direct confrontation. This approach also helps to establish a psychological context in which the suspect may feel vulnerable or compelled to provide more honest information. By highlighting past behaviors, interviewers can create an atmosphere of doubt regarding the reliability of the suspect's current statements, which can lead to inconsistencies that may ultimately help in revealing the truth.

In contrast, the other techniques may not be as effective. Challenging the suspect's memory can lead to defensiveness, while presenting irrefutable evidence might provoke a denial or withdrawal instead of fostering an open dialogue. Psychological pressure techniques can create tension that may cause the suspect to shut down or become uncooperative, which isn't conducive to gathering useful information. Thus, discussing prior deceptions aligns with the goals of building rapport and nudging the suspect toward a more truthful account.