There appears to be some hesitation within the forensic biology community to formally evaluate and report on findings given activity level propositions. This hesitance in part stems from concerns about the lack of relevant data on the dynamics of biological traces and doubt about the relevance of such expert opinions to the trier of fact. At the Netherlands Forensic Institute formal evaluative opinions on the probability of case findings given propositions at the activity level are provided since 2013, if requested by a mandating authority. In this study we share the results from a retrospective analysis of 74 of such requests. We explore which party initiates requests, the types of cases that are submitted, the sources of data being used to assign probabilities to DNA transfer, persistence, prevalence and recovery (TPPR) events, the conclusions that were drawn by the scientists, and how the conclusions were used by the courts. This retrospective analysis of cases demonstrates that published sources of data are generally available and can be used to address DNA TPPR events in most cases, although significant gaps still remain. The study furthermore shows that reporting on forensic biology findings given activity level propositions has been generally accepted by the district and appeal courts, as well as the other parties in the criminal justice system in the Netherlands.
Technological innovations enable rapid DNA analysis implementation possibilities. Concordantly, rapid DNA devices are being used in practice. However, the effects of implementing rapid DNA technologies in the crime scene investigation procedure have only been evaluated to a limited extent. In this study a field experiment was set up comparing 47 real crime scene cases following a rapid DNA analysis procedure outside of the laboratory (decentral), with 50 cases following the regular DNA analysis procedure at the forensic laboratory. The impact on duration of the investigative process, and on the quality of the analyzed trace results (97 blood and 38 saliva traces) was measured. The results of the study show that the duration of the investigation process has been significantly reduced in cases where the decentral rapid DNA procedure was deployed, compared to cases where the regular procedure was used. Most of the delay in the regular process lies in the procedural steps during the police investigation, not in the DNA analysis, which highlights the importance of an effective work process and having sufficient capacity available. This study also shows that rapid DNA techniques are less sensitive than regular DNA analysis equipment. The device used in this study was only to a limited extent suitable for the analysis of saliva traces secured at the crime scene and can mainly be used for the analysis of visible blood traces with an expected high DNA quantity of a single donor.
Objective: The majority of parents with a disabled child experience chronic sorrow, characterized by recurrent feelings of grief and loss related to their child’s disability. There is a significant lack of research on parents’ lived experiences of chronic sorrow, which limits our ability to understand parents’ needs and provide proper support. Design: Interpretative Phenomenological Analysis (IPA) was conducted based on in-depth interviews with six parents of severely disabled children. Results: In the literature on chronic sorrow, an important aspect has been consistently overlooked: the particular position of being a parent, experiencing an awareness of being ultimately responsible for their children. The analysis revealed how this awareness, experienced as a deeply felt ethical commitment, unconditional, largely in isolation, and without a limit in time, shaped the experience of chronic sorrow. Because of this awareness, the parents experienced themselves facing a Herculean task of navigating their intricate motions while struggling to maintain their ability to function. Conclusions: By revealing the importance of considering the unique parental position, the study enriches the concept of chronic sorrow, simultaneously offering insights into what it means to be a parent of a disabled child. These insights can improve care professionals’ responsiveness to parental needs.
