From interrogation to investigative interviewing - a change of
mindset29
Introduction
44. The safeguards discussed above are so important that we cannot ignore any of them.
However, from a torture-prevention perspective, these (and other) safeguards are
nonetheless complementary measures: The most important safeguard against torture
and other ill-treatment is indeed the methodology employed by the police during
arrest, detention and questioning of suspects.
45. The second part of this paper will highlight one of the most precarious undertakings in
the criminal justice process: the pre-trial questioning of criminal suspects. There are - in
addition to the disturbing CPT reports highlighted above – imperative reasons to take a
closer look at police questioning. First of all, conducting interviews of victims, witnesses
and suspects is a core task of law enforcement. Information obtained from these
interpersonal encounters between the power and the people typically forms the basis
for subsequent decisions by the police, prosecutors and judges. Consequently, how the
police behave and conduct their interviews will have a profound impact on the outcome,
fairness, efficiency and reliability of any subsequent criminal proceedings, and
ultimately, how citizens perceive the fairness of the criminal justice system.
46. In the early 1990s, a complete overhaul of the judicial system was initiated in the United
Kingdom. The police were requested nothing less than altering their mindset and
completely changing their procedures when questioning suspects of crime: from a
heuristic, interrogative practice aimed at getting the suspect to confess (interrogations)
to an evidence-based approach, designed to gather and test accurate and reliable
information (investigative interviewing).
47. Although the development from interrogation to investigative interviewing has
influenced police training outside the UK and was extended to various regions of the
world, the vast majority of police forces still have not committed themselves to the
fundamental principles and ethos underpinning the concept of investigative
interviewing.30 In his last report as UN Special Rapporteur on Torture, Juan Méndez
urged the United Nations to develop global standards for police questioning, endorsing
investigative interviewing as best practice. Investigative interviewing was chosen
because scholars and practitioners from different corners of the world advised the
Special Rapporteur that rapport-based interviewing represents the safest and most
efficient approach to solve crime and counter terrorism.31
The underlying problem
48. In order to prevent torture and other coercive interrogation tactics, legislators and
policy decision makers should reflect on the fact that coercive or manipulative
It is important to address the distinction between the terms interrogation and investigative interviewing. The
historic literature around interrogation refers to a heuristic approach, including coercive and/or manipulative
techniques, designed to obtain a confession. Investigative interviewing - as defined by the UK Home Office in
1992, developed and refined by pioneering scholars in close cooperation with the police - is an evidence based
approach, designed to gather and test accurate and reliable information from victims, witnesses and suspects of
crime. See Thomas M. Williamson, “From interrogation to investigative interviewing: strategic problems in
police questioning”, Journal of Community and Applied Social Psychology, 1993 (3), pp. 89-99.
30 David Walsh et al. (eds.), International Developments and Practices in Investigative Interviewing and
Interrogation, Volume 2: Suspects, Routledge Frontiers of Criminal Justice, 2015.
31 United Nations Special Rapporteur on Torture, interim report, fn. 13.
29
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