The Usability and Effectiveness of the Finnish Investigative Instrument of Child Sexual Abuse in Mock Evaluations

2019 ◽  
Author(s):  
Alessandro Tadei ◽  
Pekka Santtila ◽  
Jan Antfolk

The Finnish Investigative Instrument of Child Sexual Abuse (FICSA) is a computerized tool that uses Bayesian statistics to provide a base rate for an alleged child sexual abuse (CSA), using population-level information about correlates of CSA. FICSA can, thus, assist decision-making in investigations of CSA. Here, we compared forensic experts’ and students’ ability to use FICSA and whether its use affected the estimates of the probability of CSA in mock-scenarios. The use of FICSA was compared to only having access to the empirical information about CSA risk and protective factors, which FICSA is based on, and to unassisted decision-making. The 54 participants analyzed two scenarios of possible CSA and estimated the probability of the CSA allegation being true. The results show that participants using FICSA were prone to make technical mistakes that affect the correctness of the probability estimation. The performance of experts and students was equivalent in all the conditions, with the exception of the group using FICSA, where experts tended to deviate from the probability provided by FICSA more than students. Having only access to empirical information did not improve estimates compared to unassisted decision-making. Both students and experts tended to adjust the estimates provided by FICSA downwards, that is, to decrease the probability of abuse. We conclude that FICSA has the potential to assist investigators to correctly integrate evidence and calculate probabilities but that proper training is required.

2018 ◽  
Author(s):  
Alessandro Tadei ◽  
pekka santtila ◽  
Jan Antfolk

The Finnish Investigative Instrument of Child Sexual Abuse (FICSA) is a computerized tool that uses Bayesian statistics to estimate the probability that a reported child sex abuse (CSA) is true or false based on population level information regarding the correlates of CSA. FICSA can be used to assist decision-making in investigations of CSA. We compared forensic experts’ and students’ ability to use FICSA and whether its use affected the estimates of the probability of CSA in mock-scenarios. The use of FICSA was compared to only having access to the empirical information about CSA risk and protective factors, which FICSA is based on, and to unassisted decision-making. The 54 participants analyzed two scenarios of possible CSA and estimated the probability of the CSA allegation being true. The results show that participants using FICSA were prone to make technical mistakes that affect the correctness of the probability estimation. The performance of experts and students was equivalent in all the conditions, but in the group using FICSA, where experts tended to deviate from the probability provided by FICSA more than students. Having only access to empirical information did not improve estimates compared to unassisted decision-making. Both students and experts tended to adjust the estimates provided by FICSA downwards, that is, to decrease the probability of abuse. We conclude that FICSA can assist investigators to correctly integrate evidence and calculate probabilities but that proper training is required.


2019 ◽  
Vol 35 (4) ◽  
pp. 414-421 ◽  
Author(s):  
Alessandro Tadei ◽  
Pekka Santtila ◽  
Jan Antfolk

Abstract When statistically related to child sexual abuse (CSA), background information can assist decision-making in investigations of CSA allegations. Here, we studied the use of such background information among Finnish police officers. We analyzed their ability to identify and interpret CSA-related and CSA-unrelated background information both when placed in mock scenarios and when presented as separate, individual variables. We also measured the ability to correctly estimate the probability of CSA based on such background information. In the context of mock scenarios, officers were better in discarding CSA-unrelated variables than in identifying CSA-related ones. Within-subject performance across different scenarios was, however, not consistent. When information was presented as separate variables, officers tended to incorrectly consider many CSA-unrelated variables as CSA-related. Officers performed better in recognizing whether actual CSA-related variables increase or decrease the probability of CSA. Finally, officers were inaccurate in identifying variables that are CSA-related only for boys or only for girls. When asked to estimate the CSA probability of mock scenarios, participants were accurate only in assessing low-probability cases, and this was not associated with the ability to identify CSA-related and CSA-unrelated variables. We conclude that police officers would benefit from more training in using background information and from using available decision-making support tools in the context of investigating CSA allegations.


2019 ◽  
Author(s):  
Alessandro Tadei ◽  
Pekka Santtila ◽  
Jan Antfolk

When statistically related to child sexual abuse (CSA), background information can assist decision-making in investigations of CSA allegations. Here, we studied the use of such background information among Finnish police officers. We analyzed their ability to identify and interpret CSA-related and -unrelated background information both when placed in mock scenarios and when presented as separate variables. We also measured the ability to correctly estimate the base-rate of CSA allegations being true based on such background information. In the context of mock scenarios, officers were better in discarding CSA-unrelated variables than in identifying CSA-related ones. Within-subject performance across different scenarios was, however, not consistent. When information was presented as separate variables, officers tended to incorrectly consider many CSA-unrelated variables as CSA-related. Officers performed well in recognizing whether CSA-related variables increase or decrease CSA risk. Finally, officers were inaccurate in identifying variables that are CSA-related only for boys or only for girls. When asked to estimate the CSA probability of mock scenarios, participants were accurate only in assessing low-probability cases, and this was not associated with the ability to identify CSA-related and -unrelated variables. We conclude that police officers would benefit from more training in using background information and from using available decision-making support tools in the context of investigating CSA allegations.


1991 ◽  
Vol 159 (6) ◽  
pp. 769-782 ◽  
Author(s):  
Danya Glaser

Child sexual abuse is a commonly encountered and often emotionally damaging experience, maintained by secrecy and followed by denial after disclosure. Treatment in this field involves both the child and the family in a variety of treatment settings and modalities, often proceeding in parallel. Child developmental considerations dictate that treatment often proceeds in phases. It aims to protect the child from further abuse and the consequences of disclosure, and address the trauma and context of the abuse. Careful planning and co-operation is required by the many professionals working in this stressful area in order to avoid confusion, conflicts, and splits which may mirror relationships in the family. The heterogeneity of the problem is reflected in the fact that treatment cannot be offered in a uniform programme. Legal issues may influence the treatment process. Evaluation of treatment modalities, the identification of protective factors and achieving long-term adjustment in the least detrimental manner offer challenges in this newly developing field.


2012 ◽  
Vol 11 (1) ◽  
pp. 19
Author(s):  
Divya Ravindran ◽  
Janardhana N ◽  
Indiramma V

Child sexual abuse is a major public health problem with significant psychosocial consequences (Afifi & Macmillan, 2011). All child sexual abuse victims do not depict adverse consequences in later life. The variability of impact in a potentially traumatic experience like child sexual abuse is explained by the construct of resilience and it being the outcome of the influence of certain protective factors (Henley, 2010). The present article conceptualizes resilience in the area of child sexual abuse where individual, familial and community level factors are identified as predictors to fostering resilience. Formulation and development of effective interventions to reduce the impairment following child sexual abuse and to foster resilience in children, adolescents and survivors are recommended.


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