Capturing Archaeological Performance on Digital Video: Implications for Teaching and Learning Archaeology

In 2009 we produced a series of edited video clips to demonstrate practical methods to archaeology students at the University of Sydney in Australia. The videos were made publicly accessible via YouTube and incorporated into teaching of an undergraduate archaeological field methods course in 2010 and 2011. Our paper outlines staff experiences of making and using the videos for teaching and discusses results of student questionnaire feedback about the videos and the course. The results provide insight into the effectiveness of different ways of teaching practical archaeology in a context of large class sizes and limited resources and the potential of using digital video technologies to communicate archaeology to students and other audiences.Denis Gojak, Banksia Archaeology & Heritage Pty. Ltd. University of Sydney, Faculty of Arts, Small Teaching Infrastructure and Equipment Scheme Grant 2009

Benefits of mitigating childhood lead exposures associated with private wells: Implementation of a population intervention model in Wake County, North Carolina

Drinking water is an increasingly important mediator of children’s blood lead levels (BLL) in the United States; however, few studies have focused on childhood lead exposures arising from private well water specifically. This research estimated select health and economic benefits of connecting private well households to regulated community water systems. A population intervention model was used to predict the change in children’s BLLs associated with the intervention for a cohort of Wake County, North Carolina children (n=11,010). We also estimated downstream benefits, including avoided IQ loss and avoided lifetime earnings loss. BLLs were predicted to decrease by 16.5% under the intervention. Depending on the dose-response relationship used, this intervention could preserve an estimated 330 to 1430 IQ points within the cohort, corresponding to a per-child benefit ranging from $700 to$3100. We identified the selection of dose-response relationship as a source of uncertainty in estimating population health and economic benefits.Master of Science in Public Healt

Digital technologies & archaeological ethics

Emerging digital technologies offer unprecedented opportunities to enhance research, communication, information sharing, interpretation, and conservation in archaeology and cultural heritage management. Digital technologies add extra dimensions to existing ethical questions, including the maintenance of professional standards and how to balance intellectual, cultural property, and other rights against the public ‘right to know’. Digital technologies also raise new issues that have ethical dimensions including technological, organisational and economic sustainability; proprietary interests in producing, promoting, funding and maintaining widely used digital technologies and platforms, and convergence of professional and ‘community’ practices in the digital sphere. The paper will discuss such questions drawing on information collected through recent qualitative research on use of digital communication technologies in archaeology and heritage practice and the presenter’s experiences in developing the New South Wales Archaeology Online sustainable digital archive.Australian Academy of the Humanities; the ANU College of Arts and Social Science

Examining Elementary School Children’s Knowledge about Food and Nutrition in Southwestern Ontario, Canada

Purpose: Knowledge is fundamental to helping children make nutritional choices that support lifelong healthy behaviours. This study (i) investigates elementary school children’s knowledge about food and nutrition and (ii) identifies sociodemographic factors influencing children’s reported knowledge. Methods: In 2017–2019, a survey was administered to 2443 students (grades 5–8) at 60 schools across southwestern Ontario, Canada, and a parent survey was used to validate self-reported sociodemographics. Multiple regression was used to analyse children’s knowledge scores and related sociodemographic factors. A total knowledge score was calculated by summing correct responses derived from 46 individual questions in the student survey. Results: Mean total knowledge score was 29.2 out of a possible 46 points (63.5% correct). Students demonstrated some knowledge and awareness of strategies to encourage fruit and vegetable consumption, healthy food selection, nutrition, and food preparation skills, although knowledge of food guide recommendations and locally sourced produce were limited. Female sex, family income, and rurality were associated with higher knowledge scores. Conclusions: Results provide insight regarding strengths and gaps in elementary-school children’s food and nutrition knowledge. Poor performance of students on specific food guide-related questions suggests that the general guidance of the 2019 Canada’s Food Guide might be better understood by children and adolescents

Children’s perceptions of a centrally procured school food program in southwestern Ontario, Canada

Introduction: This qualitative study investigates children’s perceptions of the influences of a Centrally Procured School Food Program on their dietary behaviours and their recommendations on how to improve the program. Methods: The observations of 208 students aged 9 to 14 years (Grades 5–8) at 21 elementary schools were collected through focus groups in 2017/18. The larger intervention consisted of a 10-week program offering daily snacks (i.e. fruit, vegetables, whole grains, dairy, meat alternatives) for elementary school children in southwestern Ontario, Canada. Results: The participants’ overall impressions of the program were positive. They noted reduced hunger, increased energy and improved nutrition. Many children felt that the program changed their dietary patterns at home as well as at school, particularly in terms of eating more fruit and vegetables. The snack program also enabled children to try healthy foods. Conclusion: Most participants considered the program to be beneficial in promoting healthy eating. Participants recommended adding educational activities, expanding the variety of foods and increasing child involvement in selecting and preparing foods

Children’s perceptions of a centrally procured school food program in southwestern Ontario, Canada

Introduction: This qualitative study investigates children’s perceptions of the influences of a Centrally Procured School Food Program on their dietary behaviours and their recommendations on how to improve the program. Methods: The observations of 208 students aged 9 to 14 years (Grades 5–8) at 21 elementary schools were collected through focus groups in 2017/18. The larger intervention consisted of a 10-week program offering daily snacks (i.e. fruit, vegetables, whole grains, dairy, meat alternatives) for elementary school children in southwestern Ontario, Canada. Results: The participants’ overall impressions of the program were positive. They noted reduced hunger, increased energy and improved nutrition. Many children felt that the program changed their dietary patterns at home as well as at school, particularly in terms of eating more fruit and vegetables. The snack program also enabled children to try healthy foods. Conclusion: Most participants considered the program to be beneficial in promoting healthy eating. Participants recommended adding educational activities, expanding the variety of foods and increasing child involvement in selecting and preparing foods

Interpreting ambiguous ‘trace’ results in Schistosoma mansoni CCA Tests: Estimating sensitivity and specificity of ambiguous results with no gold standard

Background The development of new diagnostics is an important tool in the fight against disease. Latent Class Analysis (LCA) is used to estimate the sensitivity and specificity of tests in the absence of a gold standard. The main field diagnostic for Schistosoma mansoni infection, Kato-Katz (KK), is not very sensitive at low infection intensities. A point-of-care circulating cathodic antigen (CCA) test has been shown to be more sensitive than KK. However, CCA can return an ambiguous ‘trace’ result between ‘positive’ and ‘negative’, and much debate has focused on interpretation of traces results. Methodology/Principle findings We show how LCA can be extended to include ambiguous trace results and analyse S. mansoni studies from both Côte d’Ivoire (CdI) and Uganda. We compare the diagnostic performance of KK and CCA and the observed results by each test to the estimated infection prevalence in the population. Prevalence by KK was higher in CdI (13.4%) than in Uganda (6.1%), but prevalence by CCA was similar between countries, both when trace was assumed to be negative (CCAtn: 11.7% in CdI and 9.7% in Uganda) and positive (CCAtp: 20.1% in CdI and 22.5% in Uganda). The estimated sensitivity of CCA was more consistent between countries than the estimated sensitivity of KK, and estimated infection prevalence did not significantly differ between CdI (20.5%) and Uganda (19.1%). The prevalence by CCA with trace as positive did not differ significantly from estimates of infection prevalence in either country, whereas both KK and CCA with trace as negative significantly underestimated infection prevalence in both countries. Conclusions Incorporation of ambiguous results into an LCA enables the effect of different treatment thresholds to be directly assessed and is applicable in many fields. Our results showed that CCA with trace as positive most accurately estimated infection prevalence

Undetected post-traumatic stress disorder in secondary-care mental health services:systematic review

Comorbid post-traumatic stress disorder (PTSD) is associated with poorer outcomes of other disorders, but is treatable. To estimate the frequency of clinically undetected PTSD in secondary care. A systematic review of studies that screened for PTSD and reported on PTSD documentation in clinical records. Frequency of undetected PTSD was estimated, and reasons for heterogeneity explored. The median proportion of participants with undetected PTSD (29 studies) was 28.6% (interquartile range 18.2–38.6%). There was substantial heterogeneity, with studies conducted in the USA and those with the highest proportions of in-patients and patients with psychotic disorder reporting higher frequencies of undetected PTSD. Undetected PTSD is common in secondary care, even if the true value is at the lower limit of the estimates reported here. Trials examining the impact of routine screening for PTSD are required to determine whether such programmes should be standard procedure for all mental health services