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Bruijnes, Merijn - Believable suspect agents: Response and interpersonal style selection for an artificial suspect
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| Schrijver: | Bruijnes, Merijn |
|---|---|
| Titel: | Believable suspect agents: Response and interpersonal style selection for an artificial suspect |
| ISBN: | 9789036542036 |
| Uitgever: | University of Twente |
| Bijzonderheid: | 2016,pb., nieuw, (XVIII) 186 pp. |
| Prijs: |
€ 20,00
€ 4,95
|
| Meer info | Abstract The social skills necessary to properly and successfully conduct a police interrogation can and need to be trained. In the thesis I will describe the steps I took towards a virtual character that can play the role of a suspect in a police interrogation training. Students of the police academy will be able to use this ‘virtual suspect’ to practise their social skills. The virtual suspect needs to behave as a human suspect would. An important first step towards this goal is an analysis of the behaviour of human suspects in a police interrogation. We investigated whether observers could agree on what interpersonal stance was taken in the DPIT corpus and whether the observers agreed on the way they perceived the various aspects of stance taking. It turned out that agreement between observers was very low on the level of individual turns of speech. However, we showed that a ‘majority vote’ of multiple observers can indeed reveal the dynamics of stance taking in the entire interview. Additionally, we found that for some of the stance types observers agreed more than for others. Next, we explored the relation between the stance taken by the suspect and the turn-taking behaviour. Stances and roles seemed to be mediating factors for the meaning of overlaps and silences in suspect interviews. We analyse the behaviour of actors and not of real suspects to investigate how a virtual suspect should behave in order to behave as a human suspect. Therefore it is important to investigate the effect of using actors. We found that some actors are better at portraying an interpersonal stance than others. Also, validity (recognizing which stance is acted) and agreement between observers did not always go hand in hand. The virtual suspect should behave as a human suspect would behave and thus it should respond to the human interrogator as a human suspect would respond. For this we need to understand why a suspect responds in the manner he or she responds. Therefore, the next step is investigating which social and psychological theories can give an explanation for the behaviour of a (human) suspect in a police interrogation. These theories were then used to create a model that can determine appropriate behaviour of the virtual suspect in response to the behaviour of the interviewer: a Response Model. The credibility of virtual humans, such as the virtual suspect, is crucial for a ‘serious game’ with which users can train their social skills. Users need to be willing to join in the role-play and the probability that they will do this is greater when the game has a compelling story and realistic virtual characters. This requires consistency within the possible behaviours of the virtual human: the virtual human should behave in a manner that is in agreement with his or her nature. The Response Model contains a number of personality settings which can describe the personality of the virtual suspect. This allows the system to play different suspects depending on what the persona of a suspect is according to the scenario of the game. The evaluation had the form of a ‘Guess who you are talking to?’ task. Participants interacted with the virtual suspect and were unaware of its personality setting. Afterwards the participants were asked to choose which of a number of personas was most similar to the personality of the suspect they had just interacted with. Participants were able to ‘Guess who they were talking to’ better than chance. Additionally, we found that personas that differed more were less likely to be confused. This means the response model was indeed able to select different behaviour for different personas and that the behaviour differed more when the personas were more different. |
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- er hoeft niet vooraf betaald te worden; de rekening zit bij het boek ingesloten; er kan ook vooraf met i-Deal betaald worden (niet voor het buitenland);
- er worden geen verpakkings- en handlingskosten in rekening gebracht; u betaalt alleen de (eventuele) portokosten extra;
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