Sex determination from hand and foot bone lengths

Numerous studies have addressed sex estimation from the hands and feet with varying results. These studies have utilized multiple measurements to determine sex from the hands and feet, including measures of robusticity (e.g., base width and midshaft diameter). However, robusticity measurements are affected by activity, which can disguise underlying patterns of sexual dimorphism. The purpose of this study is to investigate the utility of length measurements of the hands and feet to estimate sex. The sample consists of white females (n=123) and males (n=136) from the Terry Collection. Discriminant function analysis was used to classify individuals by sex. The left hand outperformed both the right hand and foot producing correct classification rates exceeding 80%. Surprisingly, the phalanges were better sex discriminators than either the metacarpals or metatarsals. This study suggests that length measures are more appropriate than robusticity measures for sex estimation.     

Sexual dimorphism in the subadult mandible: quantification using geometric morphometrics

There have been numerous attempts, with varying degrees of success, to differentiate males from females on the basis of the immature skeleton. We investigate here whether the mandible can discriminate immature individuals by sex; the techniques we apply are from the field of geometric morphometrics. The application of these methods in forensic anthropology is still relatively new; thus, an important aspect of this research is that it demonstrates potential applications in this discipline. The sample comprises 96 known age and sex subadult individuals; the three-dimensional coordinates of 38 landmarks are analyzed using the shape analysis software morphologika. Multivariate regressions indicated no significant sexual dimorphism in the subadult sample; this result is supported by poor cross-validated classification accuracy (59%). Our results suggest that the subadult mandible is not dimorphic (to the extent that dimorphism is not evident within the sample we studied); thus, sex determination using previously described criteria is likely to yield poor results.     

Discrimination between sediment and soil samples for forensic purposes using elemental data: an investigation of particle size effects

This paper reports the results of an investigation to quantify variations in elemental concentrations amongst different particle size fractions obtained from a suite of sediment samples collected from the River Avon, UK. Concentrations of 49 elements determined by inductively coupled plasma spectrometry (ICP-AES and ICP-MS) were compared using conventional and multivariate statistical methods in order to assess compositional differences between different size fractions and between different samples. The results showed significant differences between different size fractions and the bulk sediments, but indicated that all of the size fractions considered (<150, 63-150, 20-63 and <20microm) provided an adequate basis on which to identify associations and differences between samples. It was concluded that, while in certain specific circumstances it may be most appropriate to make forensic comparisons based on a very narrowly defined particle size range, for the majority of purposes the <150microm fraction provides the best compromise between sample size requirements and data resolution.     

Perineal‐Vaginal Injuries in Children: Accident or Abuse?

Abstract: A large number of conditions have been mistaken for abuse. Differentiating accidental injuries from inflicted injuries is important in the management of injured children. In this work, the authors describe two cases of accidental perineal‐vaginal injury in children. In case 1, a 4‐year‐old girl suffered a vaginal tear caused by violent stretching during play; in case 2, a 3‐year‐old girl had minor lacerations of labia minora and majora. The intervention of a multi‐specialist team including a forensic pathologist and forensic psychiatrist was the key factor in being able to exclude abuse by third parties in the described cases.. This leads to the appropriate recommendations to be adopted in the forensic medicine setting.     

网络色情犯罪给我国侦查工作带来的挑战与对策

网络色情犯罪作为一种新型犯罪具有与普通刑事犯罪不同的特点,在行为上有较强的隐蔽性,在对象上针对不确定多数人,在主观上具有愉悦的感受等。我国目前对网络色情犯罪的侦查立法不够全面,造成在侦查实践中对罪与非罪、此罪与彼罪认识不尽一致,导致对网络色情犯罪的打击不力;侦查技术尚不完善,大量电子证据无法获取。因此,完善立法、创新侦查技术势在必行。     

SMS. OMG! LOL! TTYL: TRANSLATING THE LAW TO ACCOMMODATE TODAY'S TEENS AND THE EVOLUTION FROM TEXTING TO SEXTING

Around the country some teenagers are using their cell phones to distribute nude or seminude pictures of themselves through text messages. An alarming number of these teenagers who are caught possessing or distributing the pictures face criminal charges as a child pornographer. Some face the possibility of jail time; others must register as a sex offender. Such harsh punishments are the product of laws that have not caught up with technology's advancements. This Note suggests that child pornography laws be restructured to include a category for juvenile “sexters” so these teenagers are not prosecuted as adults or forced to register as sex offenders. The laws should recognize different categories of sexters and provide rehabilitation programs suited to respond to the level of risk each sexter presents.     

Development of a searchable major and trace element database for use in forensic soil comparisons

Forensic soil comparisons are normally undertaken on the basis of several physical, chemical and biological properties, but in all cases the interpretation of results is dependent on the availability of relevant contextual information. This paper summarises the results of major and trace element analyses performed using inductively coupled plasma atomic emission spectrometry and inductively coupled plasma-mass spectrometry on the < 150 µm size fraction of 1896 soil samples collected in connection with forensic investigations in England and Wales between 1999 and 2007. A number of new methods are described which facilitate inter-sample comparison. Although the available data do not provide uniform geographical coverage they do provide useful information which can assist police search investigations and they provide valuable contextual information which aids the evidential assessment of soil evidence when used in court. There is considerable scope to improve the database by increasing the geographical coverage and increasing the number of soil attributes which are included.     

Development and Assessment of Postcranial Sex Estimation Methods for a Guatemalan Population

This study tests whether postcranial sex estimation methods generated from Hispanic, and mainly Mexican samples, can be successfully applied to other increasingly common migrant populations from Central America. We use a sample of postcranial data from a modern (1980s) Guatemalan Maya sample (n = 219). Results indicate a decrease in classification accuracies for previously established univariate methods when applied to the Guatemalan study sample, specifically for males whose accuracies ranged from 30 to 84%. This bias toward inaccuracies for Guatemalan males is associated with the smaller skeletal sizes for the Guatemalan sample as compared to the samples used in the tested sex estimation methods. In contrast, the tested multivariate discriminant function classification yielded less sex bias and improved classification accuracies ranging from 82 to 89%. Our results highlight which of the tested univariate and multivariate methods reach acceptable levels for accuracy for sex estimation of cases where the region of origin may include Guatemala.     

Evaluation of a restorative justice-based,community-based program for people who have offended sexually: participant impact

Community Justice Initiatives, Kitchener, Canada, offers a Restorative Justice program called Revive to people impacted by sexual harm, including men who have offended sexually. This volunteer-led program treats participants with compassion while holding them accountable for sexual harm perpetrated. Program goals include reducing isolation, promoting self-awareness, and fostering healing. Based on restorative justice principles, positive community reintegration and reduction of further sexual offending are the ultimate goals of the program.

We evaluated information from a questionnaire administered at intake, after the 7-week phase, and again after participation in the peer-support group. Participants responded quantitatively about the impact of Revive on six sexual offense-related outcomes statements (e.g., gaining understanding of their triggers, understanding why they sexually offended). They also indicated the impact of Revive on psychosocial dimensions such as stigma perception and social support. Qualitative questions further elucidated the experience of Revive participation. Findings suggest that Revive has an impact on self-understanding of why they sexually offended, victim empathy, as well as stress reduction and increased self-esteem. We conclude that the restorative justice framework is a very hopeful, positive one and that the Revive program is effective at enacting restorative justice-based principles.     

Sex,Parity, and Scars: A Meta‐analytic Review

The ability to identify whether a female has been pregnant or has given birth has significant implications for forensic investigations and bioarcheological research. The meaning of “scars of parturition,” their causes, and their significance are a matter of contention, with a substantial literature of re‐evaluations and tests of the relationship between pelvic scarring and parity. The aim of this study was to use meta‐analytic techniques (the methodological approach) to test whether pelvic scarring, namely dorsal pubic pitting and the preauricular groove, is a predictor of parity and sex. Meta‐analyses indicated that neither dorsal pubic pitting nor the preauricular groove are predictors of parity status, while dorsal pubic pitting is a moderate predictor of sex. A weak relationship between dorsal pubic pitting and parity was identified, but this is believed to be a product of the moderate relationship with sex. This calls into question whether any causal relationship between parity and pelvic scarring exists.