Odor exposure and recall of a virtual reality crime scene: A preliminary study.

Environmental context reinstatement has a particular value for recall of information in forensic interviews. Since odors are valuable memory cues and can act as memory triggers, in our preliminary study we explored whether odor exposure can help people recall details of a crime scene. The study comprised 58 women and 15 men aged 22-35 who immersed in a carefully controlled environment closely resembling an actual crime setting, i.e., a virtual reality crime. Participants were exposed to an odor at encoding, recall, both or neither of these instances, yielding a total of 4 experimental groups that further completed a memory recall task. The crime scene content recall was tested in a free recall and a forced-response test immediately after seeing the crime scene and one month later. We found no significant effects of odor exposure on the free or the cued recall of the crime scene. The memory scores correlated neither with the self-assessed olfactory/visual sensitivity of the subjects, nor with the perceived odor pleasantness. These preliminary findings suggest that introduction of a vanilla odor while encoding and recalling a crime scene does not aid witness recall accuracy.

Development of a procedure involving artifact examination to determine the species affiliation of its biological material, as illustrated by an attempt to demystify an alleged Nazi lampshade made from human skin.

Objectives: The main purpose of the study was to identify the species origin of the material from which the incriminating lampshade bought at a flea market had been made. Methods: The histological and molecular biology methods commonly used in forensic genetics were selected to achieve this goal. The DNA for the research was isolated using a QIAamp DNA Mini Kit (Qiagen) according to the manufacturer's protocol for tissues. The quantitative and qualitative evaluation of genetic material was carried out by the real-time PCR method with a Quantifiler Duo DNA Quantification Kit (Applied Biosystems). Specific genetic markers of mtDNA of cattle, equines, deer, wild boar, and sheep were selected to identify species. Results: Histological tests showed that the lampshade had been made from intestinal flaps. The DNA from sample tested positive for cattle. The test results dispelled the suspicion that the researched lampshade had been made from human skin.-hour journey. The second case is a 55-year-old male assaulted with double punches in his chest and declared dead on arrival at the hospital after 30 minutes. A medicolegal autopsy and thorough investigation, in both cases, revealed cardiac tamponade due to ventricular rupture with no underlying pathology. Conclusion: The proposed testing method can be used to verify the origin of the artifacts misleadingly described as made from human skin. To our knowledge, such artifacts can be found in museums and private collections. Further-more, it has been widely believed until now that human-skin products, mainly lampshades, were mass-produced in Nazi concentration camps, mainly in Buchenwald.