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July 1, 2026Journal of Investigative Psychology and Offender Profiling

Implementing the Méndez Principles in a Confession‐Oriented Culture: A Pilot Study of Investigative Interview Training in a Brazilian Police Academy

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Authors

BCBruno Rodrigues CostaDLDenis LinoVFVinícius Renato Thomé Ferreira

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Overview

Pilot study demonstrates improved interview techniques in police candidates, suggesting effective training impact.

Key Points

  • The study aims to assess the impact of training based on Méndez Principles on investigative interview techniques in a police academy.
  • Pilot study conducted with 484 candidates at the Civil Police of Goiás, Brazil.
  • Participants completed the Suspect Interrogation Practices Scale before and after an 8-hour training module.
  • Training focused on shifting from confession-oriented techniques to evidence-based interviewing methods.
  • Significant changes noted in interview techniques post-training, with increased endorsement of recommended techniques.
  • Participants showed reduced reliance on non-recommended techniques, especially in using open and closed questions.
  • Changes signify successful reorientation of perceptions regarding investigative interviews within a confession-centered context.

Cite This Study

Costa et al. (2026) studied this question.

synapsesocial.com/papers/6a44afb45cd2549c8bc4492fhttps://doi.org/10.1002/jip.70022
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