How “Standardized” is Standardized? A Validation of Postcranial Landmark Locations

Since the mid‐1990s, osteometrics have been a major aspect in forensic anthropology. However, recent evidence has shown that practitioners have been using differing points to establish certain measurements; namely those involving the clavicle, scapula, ulna, femur, and tibia. Engaging 61 practitioners, this study examined and confirmed how extensive this discord is. The highest consistency rate among practitioners was the scapular breadth (62.3%), followed by the femoral anteroposterior subtrochanteric diameter (55%). All other levels fell below these, particularly the physiological length of the ulna which was the most inconsistently measured bone. Furthermore, these low consistency rates yielded percent mean differences between two and 20% of the measurement length, with ranges averaging 14 mm. In light of these results, it is recommended that the field take steps to improve the standardization of such problematic measurements, including reexamining all measurements currently listed in osteometric texts, reassessing the utility of each, and reissuing a comprehensive guide.     

A Radiographic Study on the Utility of Cranial Vault Outlines for Positive Identifications

A standard method for positive identification is the use of antemortem and postmortem radiographic comparisons. The purpose of this research is to test the visual accuracy of antemortem and postmortem radiographic comparisons of cranial vault outlines and to evaluate their uniqueness using geometric morphometric methods. A sample of 106 individuals with varying levels of education and forensic case experience participated in a visual accuracy test. Of the 106 individuals, only 42% correctly assigned all of the radiographs, with accuracy rates ranging from 70 to 93% for each radiographic comparison. Vault shape was further examined using elliptic Fourier analysis, and paired t‐tests were computed on the first 10 principal components accounting for 100% of the variance, which found no significant differences. The visual accuracy test and elliptic Fourier analysis shows that vault outlines may not be unique enough for positive identifications when used as a sole indicator.     

Sexual crime and place: The impact of the environmental context on sexual assault outcomes

Purpose

Using the rational choice perspective, the current study investigates the impact that the environment and offending behavior have on serial sexual crime event outcomes.

Methods

The effects of time and place factors, as well as offender modus operandi strategies, on sexual crime event outcomes are tested using Generalized Estimating Equations on a sample of 361 crime events committed by 72 serial sex offenders.

Results

Time and place do impact serial stranger sexual offenders’ modus operandi strategies, but the place characteristics of the crime have more of an effect on the offender’s behavior than do the temporal conditions during which the event occurs. Subsequent analyses indicate that temporal and place factors, as well as offender modus operandi strategies, predict whether the offender completes the rape, his reaction to victim resistance, and the level of physical force that he inflicts on the victim, but not whether the victim is forced to commit sexual acts on the offender.

Conclusions

Serial stranger sexual offenders are effective decision-makers who adapt their strategies to the physical environment in which they commit their crimes, but their degree of rationality can vary as some outcomes are more dependent on the context than the offender and his actions.     

Crime Scene Staging in Homicide

A nonrandom national U.S. sample of 946 homicide crime scenes--supplied by the FBI Behavioral Science Unit for purposes of research--was studied to delineate the prevalence, types, levels, and motives for staging in domestic, nonserial sexual, serial sexual, and general felony homicides. Stagers were found to be a relatively small group who employ a variety of methods to alter the crime scene in an attempt to redirect the investigation away from themselves as logical suspects. Results also suggest that different types of homicides have different staging rates based primarily on the relationship (or connection) between offender and victim. Implications for investigations and understanding this type of crime scene behavior are discussed.     

Use of laser-scanning confocal microscopy in the detection of diagenesis in bone

This research demonstrates the value of laser scanning confocal microscopy (LSCM) as a research tool in osteological studies, and diagenetic studies in particular. LSCM combines properties of light and scanning electron microscopy using laser light to excite fluorophores throughout the z-axis, developing a 3-D image. Using differential staining and selecting for specific wavelengths of light, one can image targeted materials. This research is divided into two parts: visualizing bone structures such as proteins and their decompositional products and visualizing diagenesis. Part one of this study utilized pig bones as a means of testing the overall ability of LSCM to fluoresce bone. Twenty-three samples were imaged, including 13 samples from a decompositional study conducted 5 years previous, and 10 “fresh” samples collected from a commercial butcher. This part of the study determined that protein and organic components of the bone could be fluoresced and diagenetic alteration could be imaged. The second part of the study used human samples as a means of imaging and mapping diagenetic alterations. The second part of the study used 13 samples, including 4 clinical, 7 ancient, and 2 modern controls. The pig study used Basic Fuchsin and SlowFade Gold stains, while the human study used toluidine blue. Images were also taken with unstained elements. The results of the non-human study found that a fresh bone fluoresced differently than that of a 5-year subset, while the results of the human study confirmed these findings and determined that the bone diagenesis can be mapped using LSCM.     

From Rebels to Rulers: The Challenges of Transition for Non-state Armed Groups in Mindanao and Myanmar

This article presents a critical comparison of the ongoing peace processes in the southern Philippines and Myanmar (Burma). It does so by examining two key armed groups: the Moro Islamic Liberation Front (MILF) on Mindanao, and the Karen National Union (KNU) in Myanmar. We identify common elements that help to explain the relative – albeit incomplete – success of these two groups in navigating their respective peace processes. The MILF and KNU are ethnonationalist armed groups struggling for self-determination against states that are experienced by ethnic minority communities as culturally alien, and economically and politically dominant. Both conflict actors are characterized by complex combinations of “greed” and “grievance” factors but nevertheless enjoy significant (albeit contested) political legitimacy among the communities they seek to represent. We explore the complex relationships between armed ethnic groups, conflict-affected communities, and civil society actors. We argue that engagement with civil society is a key element of success in the Mindanao peace process, which could be replicated in Myanmar. We examine the roles and changing nature of the state in the Philippines and Myanmar, and contrast the degrees of international involvement, as key variables in these peace processes. We observe that negotiations of comprehensive peace settlements are threatened by “the tyranny of elections” in Myanmar (2015) and the Philippines (2016), and observe the importance of including national parliaments in peace processes in a timely manner. The peace process between Manila and the MILF represents a rare example of a Muslim minority pursuing its political objectives through structured dialogue. The article focuses on the challenges faced by armed groups moving from insurgency to reinvent themselves as credible political actors and governance authorities. Our analysis draws on peace-building literature, specifically the phenomenon of “rebel governance.”     

Race and treating other people's children as adults

Juvenile offenders are sometimes transferred to a criminal court where they may stand trial as adults. The rationale for this current trend cannot be justified based on evidence from developmental psychology, the evidence of consistent positive effects for particular intervention strategies, and ethical arguments for justification of punishment. The rationale in actuality reflects the selective manipulation of the alternative conceptions of young people as dependent and vulnerable or as autonomous and responsible to continue to justify policies that entail cultural and racial discrimination. Discretionary decisions at various stages of the justice process amplify racial disparities as minority youths proceed through the system and result in more severe dispositions than for comparable White youths.