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Randomized Controlled Trial
. 2023 Apr 27;18(4):e0285114.
doi: 10.1371/journal.pone.0285114. eCollection 2023.

Effects of combining feedback and hypothesis-testing on the quality of simulated child sexual abuse interviews with avatars among Chinese university students

Yiwen Zhang  1 , Siyu Li  2   3 , Yikang Zhang  1 , Shumpei Haginoya  4 , Pekka Olavi Santtila  3   5
Affiliations
Randomized Controlled Trial

Effects of combining feedback and hypothesis-testing on the quality of simulated child sexual abuse interviews with avatars among Chinese university students

Yiwen Zhang et al. PLoS One. .

Abstract

Previous research has shown that simulation training using avatars with repeated feedback improves child sexual abuse interview quality. The present study added a hypothesis-testing intervention and examined if the combination of two interventions, feedback and hypothesis-testing, would improve interview quality compared to no intervention and to either intervention alone. Eighty-one Chinese university students were randomly assigned to a control, feedback, hypothesis-testing, or the combination of feedback and hypothesis-testing group and conducted five simulated child sexual abuse interviews online. Depending on the assigned group, feedback on the outcome of the cases and question types used in the interview were provided after each interview, and/or the participants built hypotheses based on preliminary case information before each interview. The combined interventions group and feedback group showed a higher proportion of recommended questions and correct details from the 3rd interview onward compared to the hypothesis-building and control groups. The difference between the number of correct conclusions was not significant. hypothesis-testing alone exacerbated the use of non-recommended questions over time. The results show that hypothesis-testing may impact question types used negatively but not when combined with feedback. The potential reasons for hypothesis-testing alone not being effective and the differences between the present and previous studies were discussed.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Question skills, types of details, and the assessment of information from Avatars in different number of interviews among different combinations of two interventions.
HT: Participants who built hypotheses before each interview. Feedback: Participants who received feedback on outcome and question types. Panels (A): The means of recommended questions (B) the means of non-recommended questions, and (C) the mean proportions of recommended questions presented by participants in different number of interviews. Panels (D) The means of relevant details, (E) neutral details, and (F) wrong details presented by participants in different number of interviews. Panels (G) The averaged degree of reliability (H) contradictoriness, and (I) suggestibility of information from avatars assessed by participants in different number of interviews.
See this image and copyright information in PMC

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