The Model Sketch for Enhancing Lie Detection and Eliciting Information

Area of Science:

• Cognitive Psychology
• Forensic Science
• Interview Techniques

Background:

• Sketching while narrating is a proven method for gathering information and detecting deception.
• Investigative interviews can benefit from enhanced techniques to improve information accuracy.

Purpose of the Study:

• To investigate the impact of a Model Sketch on information elicitation in mock investigative interviews.
• To determine if a Model Sketch influences the accuracy of distinguishing truth-tellers from liars.

Main Methods:

• 163 participants completed a mock mission, then were interviewed under conditions of truth-telling or deception.
• Interview phases included free recall, sketching with a Model Sketch, and sketching without a Model Sketch.
• A follow-up free recall phase assessed carryover effects of the sketching techniques.

Main Results:

• Truth-tellers provided significantly more information than liars.
• The Model Sketch condition yielded more location details compared to free recall in the initial phase.
• The Model Sketch condition showed greater differences in veracity assessment compared to other conditions in Phase 2.

Conclusions:

• The Model Sketch appears to be a valuable tool for enhancing information gathering in interviews.
• The Model Sketch demonstrates potential for improving the detection of deception, with lasting effects.
• This technique shows promise for improving the effectiveness of investigative interviews.