Why don't experienced specialist investigative police interviewers utilise cognitive techniques during significant witness interviews?

Oldershaw, Mark (2012) Why don't experienced specialist investigative police interviewers utilise cognitive techniques during significant witness interviews? MSc dissertation, University of Portsmouth.

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    Abstract

    The aim of this research was to identify the reasons why cognitive techniques taught during specialist investigative interview training were not being utilised by practitioners in real life interviews. The objective was to find out from the police interviewers themselves why the cognitive techniques that form part of the ECI model are not being used. This was done by interviewing forty specialist investigative interviewers of the Devon and Cornwall Constabulary by way of a semi-structured questionnaire. The research identified a highly significant positive correlation between the interviewers perceptions of effectiveness and their reported frequency of use of each of the techniques. This study discovered that the cognitive interview techniques of change perspective and temporal order were reported to be the least frequently used and were also considered to be the least effective. It is argued that the officers perceptions of ineffectiveness regarding the temporal order and change perspective techniques are a direct cause for their lack of use in significant witness interviews. Several reasons were identified as to why these techniques were considered ineffective. Both techniques were reported to have been found to confuse witnesses during the interview process and officers also stated that once these techniques had failed on one occasion they would be reluctant to try them again. The change perspective technique was reported by officers to be disliked and inadequately trained. Concerns were also raised about this technique obtaining hypothetical information from witnesses, which may be unreliable in court. The TO technique was reported to be too difficult to perform and was also considered dependant on witness capability or intelligence as to whether it would be effective.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Humanities and Social Sciences > Institute of Criminal Justice Studies
    Depositing User: Jane Polwin
    Date Deposited: 26 Feb 2013 13:23
    Last Modified: 28 Jan 2015 12:16
    URI: http://eprints.port.ac.uk/id/eprint/10689

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