• The enhanced cognitive interview: expressions of uncertainty, motivation and its relation with report accuracy

      Paulo, Rui M.; Albuquerque, Pedro B.; Bull, Ray; University of Derby (2015-11-11)
    • The enhanced cognitive interview: Testing appropriateness perception, memory capacity and error estimate relation with report quality

      Paulo, Rui M.; Albuquerque, Pedro B.; Saraiva, Magda; Bull, Ray; University of Derby; School of Psychology; University of Minho; Campus de Gualtar Braga Portugal; School of Psychology; University of Minho; Campus de Gualtar Braga Portugal; School of Psychology; University of Minho; Campus de Gualtar Braga Portugal; Department of Psychology; University of Portsmouth; Portsmouth United Kingdom (Wiley, 2015-04-23)
      The Enhanced Cognitive Interview (ECI) has been widely studied. However, research has overlooked witnesses’ attitudes toward the interview and how error estimate and memory capacity relate to report quality. Participants watched a mock robbery video and were interviewed 48 hours later with either the Portuguese version of the ECI or a Structured Interview (SI). Participants interviewed with the ECI provided more information without compromising accuracy, particularly in free recall. Report accuracy was stable across interview phases and information categories. A higher perception of interview appropriateness (how witnesses evaluate the appropriateness of the interview procedure used) was linked with more detailed reports and more interest in being an interviewee. Participants over-estimated their error rate, and their memory capacity was not related to witnesses’ recall. It is essential to take into account their perception of interview appropriateness and use alternative methods to evaluate report quality. Major implications for real-life investigations are discussed.
    • A lesson on interrogations from detainees: Predicting self-reported confessions and cooperation

      Snook, Brent; Brooks, Dianna; Bull, Ray; University of Derby (Sage, 2015-09-21)
      The ability to predict confessions and cooperation from the elements of an interrogation was examined. Incarcerated men (N = 100) completed a 50-item questionnaire about their most recent police interrogation, and regression analyses were performed on self-reported decisions to confess and cooperate. Results showed that the likelihood of an interrogation resulting in a confession was greatest when evidence strength and score on a humanitarian interviewing scale were high, and when the detainee had few previous convictions or did not seek legal advice. We also found that the level of cooperation was greatest when the humanitarian interviewing score was high, and when previous convictions were low. The implications of the findings for interrogation practices are discussed.
    • Linking different types of crime using geographical and temporal proximity

      Tonkin, Matthew; Woodhams, Jessica; Bull, Ray; Bond, John W.; Palmer, Emma J.; University of Leicester (2011)
      In the absence of forensic evidence (such as DNA or fingerprints), offender behavior can be used to identify crimes that have been committed by the same person (referred to as behavioral case linkage). The current study presents the first empirical test of whether it is possible to link different types of crime using simple aspects of offender behavior. The discrimination accuracy of the kilometer distance between offense locations (the intercrime distance) and the number of days between offenses (temporal proximity) was examined across a range of crimes, including violent, sexual, and property-related offenses. Both the intercrime distance and temporal proximity were able to achieve statistically significant levels of discrimination accuracy that were comparable across and within crime types and categories. The theoretical and practical implications of these findings are discussed and recommendations made for future research.