Linking arson incidents on the basis of crime scene behavior

The present study investigated the possibility of statistically linking arson cases based on consistency of behaviors from one crime scente to another. Serial and spree arson cases were studied to differentiate underlying themes and to link cases committed by the same offender. The material consisted of 248 arson cases which formed 42 series of arsons. A content analysis using 45 dichotomous variables was carried out and principal compnents (PCA) analysis was performed to identify underlying themes. Summary scores reflecting the themes were calculated. Linking effectiveness was tested with a discriminant analysis using the summary scores. The PCA analysis was successful and underlying themes which were in accordance with previous studies could be identified. Six factors were retained, in the PCA. The linking of the arson cases was possible to a satisfactory level: 33% of the cases could be correctly linked and for over 50% of the cases, the series they actually belonged to was among the ten series identified as most probable on the basis of the linking analysis. From a practical point of view, the results could be used as a basis for developing support systems for police investigations of arson. This research was financially supported by the Finnish Ministry of Interior and by Grant 54456 from the Academy of Finland.     

Construct validity and internal reliability of the Finnish risk and needs assessment form

Validation of risk and needs assessment instruments used to predict, and reduce, recidivism and misconduct is of ethical, practical and scientific importance. We argue for a focus on variable (i.e. changeable over time) risk factors, and that validation begins with establishing construct validity. The Finnish Risk and Needs Assessment Form, in Finnish Riski- ja tarvearvio (RITA), is a semi-structured interview form adapted from the Offender Assessment System used in England and Wales and consists primarily of variable risk factors. In this study, we examined the construct validity and internal reliability of RITA. The results suggest that the original RITA sections do not provide an adequate statistical model for describing the relationship between scored questions, and we, therefore, offer an improved model. In our proposed model, several scores are influenced by more than one dimension of risk and the dimensions correlate with each other considerably. We suggest that the dimensions that can be measured with RITA are Problems managing economy, Alcohol problems, Resistance to change, Drug abuse and associated behaviour, Aggressiveness and Employment problems. All factors except Drug abuse and associated behaviour had very good internal reliability. We propose this new model to be used in future research with, and in development of, RITA.     

Identifying deviant sexual interest in a sex offender sample using dual-target rapid serial visual presentation task

To investigate the dual-target rapid serial visual presentation (dtRSVP) task as a measure of deviant sexual interest (i.e. a sexual interest in children), we administered a dtRSVP with gender- and age-specific pictorial stimuli to child sex offenders (n = 69), other sex offenders (n = 43), non-sex offenders (n = 14), and community controls (n = 88). We hypothesized that (1) stimuli belonging to the preferred gender and age group presented as targets (both T1 and the subsequent T2) in the serial sequence would be more accurately detected than non-preferred stimuli and that (2) this increased detection would reduce the detection of targets later in the serial sequence (T2) due to an attentional blink. Our findings supported hypothesis 1 and partly supported hypothesis 2. Although we found group differences, individual indices based on detection rates did not allow for individual-level diagnostic categorization of participants.     

Violence as a part of the drug scene

Our study explores the violence that occurs in the drug scene from the perspective of those who use illicit drugs in Finland. We conducted 56 theme interviews with people with experience using multiple substances and studied how they produced agency related to violent acts. We were interested in the kinds of meanings they gave to violence and how these meanings varied according to different positions: (1) experiencing violence (victim), (2) committing violence and (3) witnessing violence. We found that in the drug scene, these positions were not fixed but overlapping and intertwined. Violence was usually projected onto the psychopharmacological properties of the substances or rationalized as being necessary for survival. The relations to and positions of violence differed considerably between men and women. Whereas in men’s interviews violence was often anchored to masculine power and questions of honour, in women’s accounts it was often related to intimate partner violence. However, irrespective of the individual’s position and gender, violence appeared to be a damaging experience that weakened his or her self-esteem. This vulnerability is encountered when people wish to quit the drug scene and its internal normative rules.     

Neuropathological examination in forensic context

Different diseases of and trauma to the central nervous system (CNS), as well as their consequences are common causes of death and therefore it is important to examine the CNS appropriately in forensic autopsy, bearing in mind that the site of the disease is often as crucial as its nature. The CNS is a complex organ and its examination requires special methods and knowledge and often consultation with a neuropathologist. The prerequisite for the proper examination is correct handling and processing of the CNS. Because of its soft consistency fixation of the CNS in toto before detailed macroscopic analysis is recommended but guidance for an expedited limited examination is also given. The key features to which attention should be paid during the removal and later macroscopic examination of the CNS are described. Processing CNS for microscopy also requires special techniques and in addition to the routine stains both special histological and selected immunohistochemical stainings are often needed to reach the correct diagnosis.     

Multi-organisational implementation: A challenge for empirical research and modelling

Abstract The tentative evidence which has emerged from multi–organisational implementation processing has had little impact on explanatory theoretical frameworks. The literature uses 'top–down' and 'bottom–up' models as if they were totally discrete ways of examining the institutionalisation of an implementation process. However, actual processes tend to fall somewhere between these two extremes. In this paper, I consider why this might be the case and suggest that there are ways of solving the theoretical dilemmas which prevent a comprehensive analysis of implementation processing. Using evidence from a recently completed case study of the implementation of environmental health–care in Finland, I suggest that the evidence of an interplay between the mandated implementors and others, be they public or private agents, may be an indication of an effective method of coping with these issues.