How the 1–10 rating scale can uncover the truth during investigative interviews

If investigators learn about a suspect’s possible motive, they can then develop an appropriate interrogation theme

The 1 to 10 rating scale question can be utilized in most criminal investigations when questioning a suspect.

During the non-accusatory investigative interview, when appropriate, the investigator should ask the suspect to rate the victim on a scale of 1–10, with 10 being perfect. Once the suspect answers the question and offers a number, the investigator should ask them why they chose that number.

Valuable information can be learned when the subject explains the basis for their choice. For example, the investigator may learn about the suspect’s possible motive, and can then develop the appropriate interrogation theme, which can prove to be instrumental in obtaining the truth.

Consider the following case example:

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