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Sökning: WFRF:(Jonsson Anders) > Göteborgs universitet > Jonsson Anna Carin

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  • Strömwall, Leif, et al. (författare)
  • Deception among pairs: "Let's say we had lunch and hope they will swallow it!"
  • 2003
  • Ingår i: Psychology, Crime and Law. - Taylor & Francis. - 1477-2744. ; 9:2, s. 109-124
  • Tidskriftsartikel (refereegranskat)abstract
    • Deception research has neglected the fact that legal-workers often have to try to detect deceit on the basis of statements derived from pairs of suspects, each having been interrogated repeatedly. To remedy this shortcoming we conducted a study where each member of 10 truth-telling pairs and 10 lying pairs was interrogated twice about an alibi. One hundred and twenty undergraduate students were enrolled as lie-catchers. The main findings were that (a) overall deception detection accuracy was modest; (b) lie-catchers given access to a large number of statements did not outperform lie-catchers given access to a lesser number of statements; (c) when asked to justify their veracity assessments the most frequently reported cue was 'consistency within pairs of suspects'; (d) all cues to deception were of low diagnostic value. Psycho-legal aspects of integrating sequential information in deception detection contexts are discussed.
  • Allwood, Carl Martin, et al. (författare)
  • Child witnesses’ metamemory realism
  • 2006
  • Ingår i: Scandinavian Journal of Psychology. - Wiley-Blackwell. - 1467-9450. ; 47:6, s. 461-470
  • Tidskriftsartikel (refereegranskat)abstract
    • This study investigated the degree of realism in the confidence judgments of 11 to 12-year-olds (41 girls and 40 boys) of their answers to questions relating to a short film clip showing a kidnapping event. Four different confidence scales were used: a numeric scale, a picture scale, a line scale and a written scale. The results demonstrated that the children showed a high level of overconfidence in their memories. However, no significant differences between the four confidence scales were found. Weak gender differences were found in that the girls were slightly, but significantly, better calibrated than the boys. In addition, although both boys and girls overestimated the total number of memory questions they had answered correctly, the boys gave higher estimates compared with the girls. In brief, the results indicate that, at least in the context investigated, 11-12 year-old children's confidence in and estimations of their own event memory show poor realism (overconfidence and overestimation). A comparison with previous research on adults indicates that 11 to 12-year-old children show noticeably poorer realism.
  • Allwood, Carl Martin, et al. (författare)
  • Does mood influence the realism of confidence judgments?
  • 2002
  • Ingår i: Scandinavian Journal of Psychology. - Wiley-Blackwell. - 1467-9450. ; 43:3, s. 253-260
  • Tidskriftsartikel (refereegranskat)abstract
    • In this study we investigated how mood influences the degree of realism in participants’ confidence judgments (based on an episodic memory task). Using music and film in combination, we successfully induced half of the participants into an elated mood, but failed to induce a sad mood in the other half. Contrary to our prediction, our data indicated that there was no difference in the realism of the confidence between the conditions. When relating this result to previous research our conclusion is that there is no, or very little, influence of mood of moderate intensity on the realism of confidence judgments.
  • Allwood, Carl Martin, et al. (författare)
  • The effects of source and type of feedback on child witnesses' metamemory accuracy
  • 2005
  • Ingår i: Applied Cognitive Psychology. - 0888-4080. ; 19:3, s. 331-344
  • Tidskriftsartikel (refereegranskat)abstract
    • This study investigated the effect of feedback on the accuracy (realism) of 12-year-old children's metacognitive judgments of their answers to questions about a film clip. Two types of judgments were investigated: confidence judgments (on each question) and frequency judgments (i.e. estimates of overall accuracy). The source of feedback, whether it was presented as provided by a teacher or a peer child, did not influence metacognitive accuracy. Four types of feedback were given depending on whether the participant's answer was correct and depending on whether the feedback confirmed or disconfirmed the child's answer. The children showed large overconfidence when they received confirmatory feedback but much less so when they received disconfirmatory feedback. The children gave frequency judgments implying that they had more correct answers than they actually had. No main gender differences were found for any of the measures. The results indicate a high degree of malleability in children's metacognitive judgments.
  • Granhag, Pär-Anders, et al. (författare)
  • Partners in Crime: How Liars in Collusion Betray Themselves
  • 2003
  • Ingår i: Journal of Applied Social Psychology. - 0021-9029 .- 1559-1816. ; 33:4, s. 848-868
  • Tidskriftsartikel (refereegranskat)abstract
    • The paradigmatic task for participants in studies on deception is to assess veracity on the basis of a single statement. However, in applied contexts, lie catchers are often faced with multiple statements (reported by one or several suspects). To appreciate this mismatch, we conducted a study where each member of 10 truth-telling pairs and 10 lying pairs (reporting fabricated alibis) was interrogated twice about an alibi. As predicted, lying pair members were more consistent between themselves than were truth-telling pair members, and single liars and truth tellers were equally consistent over time. Furthermore, truth tellers made more commissions than did liars. Although in line with our repeat vs. reconstruct hypothesis, these findings contrast sharply with beliefs held by professional lie catchers and recommendations found in literature on deception detection. The results are translated into an applied psycholegal context.
  • Granhag, Per-Anders, et al. (författare)
  • The Cognitive Interview and its effect on witnesses' confidence
  • 2004
  • Ingår i: Psychology, Crime and Law. - Taylor & Francis. - 1477-2744. ; 10:1, s. 37-52
  • Tidskriftsartikel (refereegranskat)abstract
    • Today there is ample evidence that the Cognitive Interview (CI) enhances witnesses' memory. However, less is known about how the CI affects eyewitnesses' confidence. To address this shortcoming we conducted a study analyzing how realism in confidence was affected by the CI. All participants (n = 79) were first shown a filmed kidnapping. After 2 weeks we interviewed one-third of the participants according to the guidelines of the CI, one-third according to a Standard Interview (SI), and one-third were not interviewed at all (Control condition). Participants in all three conditions were then asked to answer 45 forced-choice questions, and to give a confidence judgment after each choice. For the 45 questions, no differences in accuracy were found between the three conditions. Confidence was higher in the CI and SI conditions, compared with the Control condition. CI and SI did not differ in metacognitive realism but both showed lower realism compared with the Control condition, although only CI significantly so. The results indicate that the inflation in confidence is more likely to be explained in terms of a reiteration effect, than as a consequence of the particular mnemonics characterizing the CI (e.g. "mental reinstatement of context"). In sum, CI does not seem to impair (or improve) the realism in witnesses' confidence, and does not inflate confidence in erroneous recall, compared to a SI.
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