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A true or false confession? A case-study on the effects of presentation format and camera focus

Paper i proceeding
Författare Sara Landström
Emma Roos Af Hjelmsäter
Pär-Anders Granhag
Publicerad i 3rd annual meeting of the Nordic Network for research on Psychology and Law, Turku, Finland, 2006.10.05
Publiceringsår 2006
Publicerad vid Psykologiska institutionen
Språk en
Ämnesord Deception detection, Camera focus
Ämneskategorier Psykologi


In 2003 (Stockholm, Sweden) a man was shot several times in the legs, and almost died as a consequence of the big loss of blood. The victim said he had recognized the person that shot him, and that he was sure it was his colleague. The colleague denied, but was convicted and sentenced to nine years imprisonment. In 2005 an anonymous man contacted a famous Swedish journalist, saying he was the one guilty of the shooting, and in order to prove this he agreed to be interviewed. In the present study we used this interview to investigate how the camera’s point of view (experiment 1) and different presentation modes (experiment 2) affect observers’ perception of the suspect, the interviewer and the veracity judgments made. The interview was videotaped from three different angles. The first one showed both the man and the journalist, the second one showed only the man and the third only the journalist. Each videotape was shown to 32 participants who after watching the interview rated their perception of the suspect, their perception of the interviewer and assessed the suspect’s veracity. Observers’ self-reported cues to assessing veracity were also coded. For the second experiment we used the videotape showing both the man and the journalist, an audiotaped version and a transcript of the very same interview. Each version was shown to 32 participants who were given the same questionnaire as the participants in experiment 1. The results in experiment 1 showed that the camera angle affected the participants’ perception of the interviewer. Experiment 2 showed that both the participants’ perception of the suspect and their perception of the interviewer were affected by presentation mode

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