Zoekresultaten

CSI-CSI: Comparing several investigative approaches toward crime scene improvement

Crime scene investigations are highly complex environments that require the CSI to engage in complex decision-making. CSIs must rely on personal experience, context information, and scientific knowledge about the fundamental principles of forensic science to both find and correctly interpret ambiguous traces and accurately reconstruct a scene. Differences in CSI decision making can arise in multiple stages of a crime scene investigation. Given its crucial role in forensic investigation, CSI decision-making must be further studied to understand how differences may arise during the stages of a crime scene investigation. The following exploratory research project is a first step at comparing how crime scene investigations of violent robberies are conducted between 25 crime scene investigators from nine countries across the world.Through a mock crime scene and semi-structured interview, we observed that CSIs have adopted a variety of investigation approaches. The results show that CSIs have different working strategies and make different decisions when it comes to the construction of relevant hypotheses, their search strategy, and the collection of traces. These different decisions may, amongst other factors, be due to the use of prior information, a CSI’s knowledge and experience, and the perceived goal of their investigation. We suggest the development of more practical guidelines to aid CSIs through a hypothetico-deductive reasoning process, where (a) CSIs are supported in the correct use of contextual information, (b) outside knowledge and expertise are integrated into this process, and (c) CSIs are guided in the evaluation of the utility of their traces.

Keeping trouble at a safe distance

‘The fear of crime’ is “upon everybody’s tongue” nowadays (Farrall & Gadd 2004:1). The concept is widely accepted as social problem across the globe (Gray, Jackson & Farrall 2008, Garland 2001) as it is held to impinge ‘(…) upon the well-being of a large proportion of the population’ (Farralll et al. 1997:658). But do we actually have a valid picture of a genuine ‘social problem of striking dimensions’ (Ditton 1999:83)? Critical voices say we don’t. ‘The fear of crime’ - as we generally know it - is seen by them as ‘(…) a product of the way it has been researched rather than the way it is’ (Farrall et al. 1997:658). And still, 45 years after the start of research, ‘surprisingly little can be said conclusively about the fear of crime‘ (Ditton & Farrall 2000:xxi). This research contributes to a growing body of knowledge - from especially the last fifteen years - that treats ‘the fear of crime’ as ‘(…) a complex allocation of interacting feelings, perceptions, emotions, values and judgments on the personal as well as the societal level’ (Pleysier 2010:43). One often replicated and paradoxical observation catches the eye: citizens perceive a growing threat of crime to their society, but consequently perceive a low risk that they themselves will fall victim of crime. Taking a social psychological approach (e.g. see Farrall et al. 2000; Jackson 2008), we will search for suitable explanations for this paradoxical observation in the fear of crime’s research tradition. The aim of this research is ‘to integrate social psychological concepts related to the individual’s identity and evaluation of his position in an increasingly complex society, to enhance our understanding of the fear of crime concept’ (Pleysier & Cops 2016:3).

High tech crime, high intellectual crime?

In our highly digitalized society, cybercrime has become a common crime. However, because research into cybercriminals is in its infancy, our knowledge about cybercriminals is still limited. One of the main considerations is whether cybercriminals have higher intellectual capabilities than traditional criminals or even the general population. Although criminological studies clearly show that traditional criminals have lower intellectual capabilities, little is known about the relationship between cybercrime and intelligence. The current study adds to the literature by exploring the relationship between CITO-test scores and cybercrime in the Netherlands. The CITO final test is a standardized test for primary school students - usually taken at the age of 11 or 12 - and highly correlated with IQ-scores. Data from Statistics Netherlands were used to compare CITO-test scores of 143 apprehended cybercriminals with those of 143 apprehended traditional criminals and 143 non-criminals, matched on age, sex, and country of birth. Ordinary Least Squares regression analyses were used to compare CITO test scores between cybercriminals, traditional criminals, and non-criminals. Additionally, a discordant sibling design was used to control for unmeasured confounding by family factors. Findings reveal that cybercriminals have significantly higher CITO test scores compared to traditional criminals and significantly lower CITO test scores compared to non-criminals.

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The added value of behavioural information in crime scene investigations

Forensic and behavioural science are often seen as two different disciplines. However, there is a growing realization that the two disciplines should be more strongly integrated. Incorporating psychological theories on human behaviour in forensic science could help solving investigative problems, especially at the crime scene. At the crime scene it is not just about applying scientific methods to analyse traces; these traces must first be perceived and categorized as relevant. At the crime scene, the behavioural perspective of an investigative psychologist could play an important role. In this study, we examine to what extent (1) investigative psychologists detect deviant behavioural cues compared to forensic examiners when investigating a crime scene, (2) forensic examiners can find the relevant traces that can be associated with this behaviour and (3) the availability of a psychological report highlighting these behavioural cues helps forensic examiners in finding more relevant traces. To this end, a total of 14 investigative psychologists and 40 forensic examiners investigated a virtual 3D mock crime scene. The results of this study show that investigative psychologists see significantly more deviant behavioural cues than forensic examiners, and that forensic examiners who receive a psychological report on these cues recognize and collect significantly more traces that can be linked to deviant behaviour and have a high evidential value than examiners who did not receive this information. However, the study also demonstrates that behavioural information is likely to be ignored when it contradicts existing beliefs.