Children’s Use of a ‘Time Line’ to Indicate When Events Occurred

Children who allege abuse are often asked to provide temporal information such as when the events occurred. Yet, young children often have difficulty recalling temporal information due to their limited knowledge of temporal patterns and linguistic capabilities. As time is an abstract concept (we cannot see it), some investigators have begun to use ‘time-lines’ or pictorial representations of time to aid children. Yet, there is no published research testing whether children are able to use time-lines and whether they can provide adequate temporal information using them. We tested whether children could indicate the time-of-day of events using a pictorial time-line and then compared their responses to their parents’. Seven- to 8-year-olds were most consistent with parental estimates while 4-year-olds were least consistent. Responses from the 5- to 6-year-olds depended on the temporal task. Guessing and using general knowledge to estimate the time-of-day were ruled out, and so children were genuinely drawing on episodic memory when making time-line judgments. Thus, there was a developmental progression in children’s use of physical representations to communicate abstract information. These results are promising for the use of the time-line in forensic settings but much more research is needed.     

Isolation and Individualization of Conceptus and Maternal Tissues from Abortions and Placentas for Parentage Testing in Cases of Rape and Abandoned Newborns*

Abstract: Abortion specimens are often submitted to forensic laboratories as the only piece of physical evidence in rape and incest cases. The recovery of conceptus tissues from this evidence permits the use of paternity testing to evaluate suspects. In cases of abandoned newborns, the recovery of maternal tissue from the placenta allows for the direct comparison of genetic profiles between the suspected mother and the biological mother. We report on the identification and isolation of conceptus tissues from embryonic‐ and fetal‐period abortions, and maternal tissues from delivered placentas, by gross and low‐magnification examination with manual dissection. Hundreds of single‐source samples have been successfully recovered by this method and short tandem repeat typed using standard forensic procedures. We additionally describe extraembryonic tissues that can be recovered and typed in the absence of the embryo proper. We conclude that an expertise and protocols can be developed by forensic laboratories for the routine analysis of this evidence.     

Differential effects of general versus cued invitations on children’s reports of a repeated event episode

The ability to describe individual episodes of repeated events (such as ongoing abuse) can enhance children’s testimony and assist the progression of their cases through the legal system. Open-ended prompts have been advocated as a means to assist children in accurately retrieving information about individual episodes. In the current study, two subtypes of open-ended prompts (cued and general invitations) were compared for their effects on five- to nine-year-olds’ (n?=?203) reports about individual episodes of a repeated event. Interviews occurred 1–2 weeks after the last of 4 event sessions. Cued invitations assisted children to provide specific details about individual episodes of a repeated event, while general invitations were useful to elicit more broad happenings of the episodes. The accuracy of responses to general invitations was similar for children of all ages up to one week after the event, but at a longer interview delay younger children were less accurate than older children. There were no differences in the accuracy of responses to cued invitations as a function of age or interview delay. Results suggest that interviewers tasked with eliciting accounts of individual episodes from a repeated event, such as ongoing abuse, should consider the differential efficacy of each prompt-type on children’s reports.     

Proximal End Root Morphology Characteristics in Antemortem Anagen Head Hairs

The proximal end morphology of antemortem anagen head hair was compared with the characteristics documented to occur in postmortem hairs. Antemortem anagen and telogen head hairs (N = 967) were recovered following exposure to seven environments. Root morphology characteristics consistent with those reported in postmortem hairs were observed in 66 (14%) hairs exposed to a water, normal saline, outdoor soil, or indoor shower environment. Thirty‐three anagen hairs (7%) exhibited a root band at the proximal end. The mean distance from the root tip to the onset of the root band ranged from 0.23 to 0.7 mm, depending on the environment. The mean distance from the root tip to the onset of the root band was 0.46 mm, with a mean band length of 0.44 mm. The results illustrate the need to better characterize postmortem banding through quantitative measurements, including the range for root tip to band distance and the overall band length.     

The Effect of School Dropout on Verbal Ability in Adulthood: A Propensity Score Matching Approach

Compared to high school graduates, adolescents who drop out of school are more likely to have a range of negative outcomes, including lower verbal capacities; however, the true nature of this association is not well-understood. Dropping out of school could have an important effect on reducing verbal skills, or the link between dropping out of school and diminished verbal skills could be a spurious association that is the result of unmeasured confounding variables. The current study tested these two competing perspectives by using propensity-score-matching (PSM) to unpack the association between school dropout and verbal skills among 7,317 respondents from the National Longitudinal Study of Adolescent Health (51% female, 49% male; 62% Caucasian, 38% minority). The results of the PSM models indicated a small yet meaningful statistically significant effect of dropout on verbal skills in adulthood even after taking into account a range of confounders. We conclude by discussing the implications of our results.     

Correlates of law enforcement suicide in the United States: a comparison with Army and Firefighter suicides using data from the National Violent Death Reporting System

Law Enforcement (LE) officers are considered to be at elevated risk of suicide. This study explored variables associated with LE suicide and the extent they differentiated LE suicides from those within similar occupations considered at risk – Army and Firefighters. Using a public health database of violent deaths, the US National Violent Death Reporting System (NVDRS), the prevalence of and association between seven suicide variables (treatment for a mental health condition, Post Traumatic Stress disorder diagnosis, alcohol and substance abuse, job problems, intimate partner problems) and suicide within LE, Army and Firefighters was computed. Method of suicide and demographic characteristics were also identified. All of the suicide variables were associated with suicide in the three occupation groups. LE suicides were differentiated from Army and Firefighter suicides by being more strongly associated with job problems and suicide by females was more common. Implications for suicide prevention strategies within LE are discussed.     

News media influences on public views of sentencing

Opinion polls in Canada, the United States, Great Britain, Australia, and elsewhere suggest that most members of the public would like their criminal courts to be harsher. Does media coverage of criminal sentencing contribute to a preference for harsher sentencing? Most people derive their information about sentencing from the news media and content analyses of news stories in Canada and the United States demonstrate that crimes of violence and sentences of imprisonment are overrepresented. Moreover, the news media provide little systematic information about the sentencing process or its underlying principles. This article reports the results of three studies examining the effects of media coverage on public opinion about sentencing. Subjects who read actual newspaper stories about sentencing that appeared in Canadian newspapers rated most reported sentences as too lenient. However, the specific account they read influenced their leniency judgments. Furthermore, in one experiment, participants assigned to read a newspaper account of a sentencing decision supported harsher sentences than participants who read a summary of actual court documents from the sentencing hearing.     

Ground penetrating radar surveys to locate 1918 Spanish flu victims in permafrost

The "Spanish Flu" killed over 40 million people worldwide in 1918. Archival records helped us identify seven men who died of influenza in 1918 and were interred in Longyearbyen, Svalbard, Norway, 1,300 km from the North Pole. Ground Penetrating Radar (GPR) was used successfully, in a high-resolution field survey mode, to locate a large excavation with seven coffins, near the existing seven grave markers. The GPR indicated that the ground was disturbed to 2 m depth and was frozen below 1 m. Subsequent excavation showed that: a) the GPR located the position of the graves accurately, b) the coffins were buried less than 1 m deep, and c) that the frozen ground was 1.2 m deep where the coffins were located. The GPR assisted in planning the exhumation, safely and economically, under the high degree of containment required. Virologic and bacteriologic investigations on recovered tissues may give us an opportunity to isolate and identify the micro-organisms involved in the 1918 influenza and expand our knowledge on the pathogenesis of influenza.