New Estimates of the Value of Federal Mineral Rights and Land

We calculate a time series of the value of federal mineral rights in oil and natural gas by using various estimates of proven and unproven reserves and time series on federal government royalties and bonus payments. We also present estimates of the components of the revaluation of this series through time.The results are striking. Federal mineral rights are the single largest item in a complete balance sheet of the federal government, dominating the total value of tangible capital or financial assets. In 1981, for example, we estimate that the value of federal oil and gas rights exceeded $800 billion, which was larger than the privately held national debt. The paper also presents estimates of various confidence bounds on the value of oil and natural gas. The methodology can be extended to other minerals, although we have not done so; our estimate is a lower bound on the total value of all mineral rights.The paper also expands and extends previous estimates of the value of federal land. New data, and attention to the detailed decomposition of federal land holdings by type, lead to substantially larger estimates of the value of federal land than have been presented in previous research. Our estimate is that by 1981, the total value of federal land was$175 billion.

Unmet need for chronic mental ill health: A population-based record linkage study

Introduction It is widely recognised that many people with chronic mental ill health do not receive the treatment they need, with socio-demographic and socio-economic factors contributing to mental healthcare access and receipt of treatment. However, recently different perceptions have emerged following reports of over-treatment or over-medication of a proportion of the population presenting to primary care settings with poor mental health. Objectives This study aimed to investigate which factors are associated with the presence of poor mental health and the likelihood of being in receipt of pharmacological treatment for those who report chronic mental ill health. Methods The methodology was a record linkage of the 2011 Northern Ireland Census returns and a population-wide database of prescribed medications. The presence of a chronic mental health condition, as assessed through a self-reported question in the 2011 Census, was compared to electronic administrative records on psychotropic medication use in the twelve months following the Census. Results This study shows that those of non-white background (OR 0.38 95%CI 0.26-0.54), who were never married (OR 0.67 95%CI 061-0.73), unemployed (OR 0.65 95%CI 0.53-0.81) or living in a rural area (OR 0.88 95%CI 0.79-0.98) were less likely than their peers to receive medication for their poor mental health. Conclusions Some but not all of the observed variations may represent unmet need, but further studies are required to understand the knowledge of and attitudes towards healthcare services of groups (such as ethnic minorities and unemployed) who are identified as being less likely to receive treatment

Influence of Heterogamy by Religion on Risk of Marital Dissolution: A Cohort Study of 20,000 Couples

Heterogamous marriages, in which partners have dissimilar attributes (e.g. by socio-economic status or ethnicity), are often at elevated risk of dissolution. We investigated the influences of heterogamy by religion and area of residence on risk of marital dissolution in Northern Ireland, a country with a history of conflict and residential segregation along Catholic–Protestant lines. We expected Catholic–Protestant marriages to have elevated risks of dissolution, especially in areas with high concentrations of a single religious group where opposition to intermarriage was expected to be high. We estimated risks of marital dissolution from 2001 to 2011 for 19,791 couples drawn from the Northern Ireland Longitudinal Study (a record linkage study), adjusting for a range of compositional and contextual factors using multilevel logistic regression. Dissolution risk decreased with increasing age and higher socio-economic status. Catholic–Protestant marriages were rare (5.9 % of the sample) and were at increased risk of dissolution relative to homogamous marriages. We found no association between local population composition and dissolution risk for Catholic–Protestant couples, indicating that partner and household characteristics may have a greater influence on dissolution risk than the wider community

Midazolam, hippocampal function, and transitive inference: Reply to Greene

The transitive inference (TI) task assesses the ability to generalize learned knowledge to new contexts, and is thought to depend on the hippocampus (Dusek & Eichenbaum, 1997). Animals or humans learn in separate trials to choose stimulus A over B, B over C, C over D and D over E, via reinforcement feedback. Transitive responding based on the hierarchical structure A > B > C > D > E is then tested with the novel BD pair. We and others have argued that successful BD performance by animals – and even humans in some implicit studies – can be explained by simple reinforcement learning processes which do not depend critically on the hippocampus, but rather on the striatal dopamine system. We recently showed that the benzodiazepene midazolam, which is thought to disrupt hippocampal function, profoundly impaired human memory recall performance but actually enhanced implicit TI performance (Frank, O'Reilly & Curran, 2006). We posited that midazolam biased participants to recruit striatum during learning due to dysfunctional hippocampal processing, and that this change actually supported generalization of reinforcement values. Greene (2007) questions the validity of our pharmacological assumptions and argues that our conclusions are unfounded. Here we stand by our original hypothesis, which remains the most parsimonious account of the data, and is grounded by multiple lines of evidence

A survey of antibodies to pestivirus in sheep in the Republic of Ireland

<p/> <p>Sera from 1,448 adult ewes in 91 flocks, representing all 26 counties in the Republic of Ireland, were examined for pestivirus antibodies using a commercially available ELISA which detected IgG₁antibody to border disease virus. Eighty-one sheep (5.6%) in 42 flocks (46.0%) were antibody-positive. Within infected flocks, the mean seroprevalence level was 11.4% with a range of 6.3% to 30.0%. The highest antibody prevalence was detected in sheep from central lowland counties of Ireland. Comparative neutralisation testing of 42 ELISA-positive sera detected geometric mean antibody titres of 136 to the NADL strain of bovine viral diarrhoea virus (BVDV), 92 to the Moredun strain of border disease virus and 21 to the 137/4 strain of border disease virus. These results suggest that BVDV may be the major ruminant pestivirus infecting sheep in Ireland. Although there are high numbers of infected flocks, many sheep within such flocks remain antibody-negative and are at risk of giving birth to lambs with congenital border disease.</p