Malgré l'attention accordée à l'enjeu de la mésinformation au cours des dernières années, peu d’études ont examiné l'appui des citoyens pour les mesures visant à y faire face. À l'aide de données récoltées lors des élections québécoises de 2022 et de modèles par blocs récursifs, cet article montre que l'appui aux interventions contre la mésinformation est élevé en général, mais que les individus ayant une idéologie de droite, appuyant le Parti conservateur du Québec et n'ayant pas confiance dans les médias et les scientifiques sont plus susceptibles de s'y opposer. Ceux qui ne sont pas préoccupés par l'enjeu, priorisent la protection de la liberté d'expression ou adhèrent aux fausses informations y sont aussi moins favorables. Les résultats suggèrent que dépolitiser l'enjeu de la mésinformation et travailler à renforcer la confiance envers les institutions pourraient augmenter la légitimité perçue et l'efficacité de notre réponse face à la mésinformation.

Theories of international relations (IR) typically make predictions intended to hold across many countries, yet existing experimental evidence testing their micro-foundations relies overwhelmingly on studies fielded in the United States. We argue that the broad nature of many IR theories makes it especially important to evaluate the extent to which their predictions hold across countries. To examine the generalizability of IR experimental findings beyond the US, we implemented a preregistered and harmonized multisite replication study, fielding four prominent IR experiments across a diverse set of seven democracies: Brazil, Germany, India, Israel, Japan, Nigeria, and the US. We find high levels of generalizability across all four experiments, a pattern further analysis suggests is due to limited treatment effect heterogeneity. Our findings and approach offer important empirical and methodological insights for the design and interpretation of future experimental research in IR.

What would the ‘sharing economy’ look like if platform providers optimised for racial and other forms of diversity? This article considers that question. Following the Introduction, Part 2 of this article reviews the widespread nature of race and other forms of discrimination in platform technologies. Part 3 uses core strands of property theory to analyse the ways in which racial privilege translates into property entitlements. Part 4 discusses a range of reforms within property law that can contribute to eliminating the value – and ultimately the fact – of whiteness as a property entitlement in the platform economy.

We study two continuous-time Stackelberg games between a life insurance buyer and seller over a random time horizon. The buyer invests in a risky asset and purchases life insurance, and she maximizes a mean-variance criterion applied to her wealth at death. The seller chooses the insurance premium rate to maximize its expected wealth at the buyer’s random time of death. We consider two life insurance games: one with term life insurance and the other with whole life insurance—the latter with pre-commitment of the constant investment strategy. In the term life insurance game, the buyer chooses her life insurance death benefit and investment strategy continuously from a time-consistent perspective. We find the buyer’s equilibrium control strategy explicitly, along with her value function, for the term life insurance game by solving the extended Hamilton–Jacobi–Bellman equations. By contrast, in the whole life insurance game, the buyer pre-commits to a constant life insurance death benefit and a constant amount to invest in the risky asset. To solve the whole life insurance problem, we first obtain the buyer’s objective function and then we maximize that objective function over constant controls. Under both models, the seller maximizes its expected wealth at the buyer’s time of death, and we use the resulting optimal life insurance premia to find the Stackelberg equilibria of the two life insurance games. We also analyze the effects of the parameters on the Stackelberg equilibria, and we present some numerical examples to illustrate our results.

We build a Shannon orbit equivalence between the universal odometer and a variety of rank-one systems. This is done in a unified manner using what we call flexible classes of rank-one transformations. Our main result is that every flexible class contains an element which is Shannon orbit equivalent to the universal odometer. Since a typical example of flexible class is $\{T\}$ when T is an odometer, our work generalizes a recent result by Kerr and Li, stating that every odometer is Shannon orbit equivalent to the universal odometer. When the flexible class is a singleton, the rank-one transformation given by the main result is explicit. This applies to odometers and Chacon’s map. We also prove that strongly mixing systems, systems with a given eigenvalue, or irrational rotations whose angle belongs to any fixed non-empty open subset of the real line form flexible classes. In particular, strong mixing, rationality or irrationality of the eigenvalues are not preserved under Shannon orbit equivalence.

The group of order-preserving automorphisms of a finitely generated Archimedean ordered group of rank $2$ is either infinite cyclic or trivial according as the ratio in $\mathbb {R}$ of the generators of the subgroup is or is not quadratic over $\mathbb {Q}.$ In the case of an Archimedean ordered group of rank $2$ that is not finitely generated, the group of order-preserving automorphisms is free abelian. Criteria determining the rank of this free abelian group are established.

We give a precise classification, in terms of Shimura data, of all $1$-dimensional Shimura subvarieties of a moduli space of polarized abelian varieties.

This study reports on the description of children’s distinct trajectories of intrusive grief, baseline predictors of grief trajectories, and the association of grief trajectories with mental health, substantive abuse and disordered grief six and fifteen years following baseline assessment. The study uses data on 244 parentally-bereaved children ages 8–16 at baseline. Four distinct trajectories were identified using Growth Mixture Modeling over four waves of assessment across 6 years. The trajectories were labeled high chronic grief, moderate chronic grief, grief recovery (starts high but decreases over 6 years of assessment) and grief resilience (chronic low grief). Baseline factors associated with chronic high or moderate chronic levels of grief included depression, traumatic cause of death (homicide or suicide), active inhibition of emotional expression, active coping, child age and gender. At the six-year assessment, trajectories were associated with internalizing mental health problems, higher level of traumatic grief, and aversive views of the self. At the fifteen-year assessment, trajectories were associated with intrusive grief. The results are interpreted in terms of consistency with prior evidence of children’s long-term grief, theoretical processes that may account for chronic grief and implications for the development of preventive and treatment interventions.

Geoffrey Pullum has produced countless contributions to linguistic theory over his 50-year career in the field. Given this exceptional scientific achievement, his philosophical work often goes underappreciated. In this article, I discuss and critique three themes from Pullum’s philosophy of linguistics, namely, cardinality neutrality, model-theoretic syntax and normativity in language. I conclude by showing how these seemingly disparate elements might indeed be connected in terms of a normative constructivist approach to linguistics.

Canadian entomology collections contain valuable biodiversity and ecological data. To be most accessible to those working outside of the collections, they need to be digitised. Multiple analyses of the digital database of the Odonata collection at the Royal British Columbia Museum (Victoria, British Columbia, Canada) were conducted. These analyses reveal that complete digital datasets can be used to explore questions of historical and current geographical distribution and species composition differences based on ecoprovince and elevation. The results of these analyses can be used directly in conservation and climate change impact mitigation decisions. These analyses are possible only because the Odonata collection has received concerted effort to digitise all specimen records. The full value of long-term historical insect biodiversity data can be accessed only once collections are digitised. Additional training and employment of collection management and curatorial staff is essential to optimise the use of abundant but underused Canadian biodiversity data.

Statistical discrimination offers a compelling narrative on gender wage gaps among younger workers. Employers could reduce women's wages to adjust for expected costs linked to child-bearing. If this is the case, then trends toward delayed fertility should reduce the gender wage gap among young workers. We provide a novel collection of adjusted gender wage gap (AGWG) estimates among young workers from 56 countries spanning four decades and use it to test the conjecture that delayed fertility reduces gender wage inequality. We employ instrumental variables, and find that one year postponement of the first birth reduces AGWG by two percentage points (15% of the AGWG). We benchmark this estimate with the help of time-use data.

In this paper, we introduce new classes of gluing of complex analytic space germs, called weakly large, large, and strongly large. We describe their Poincaré series and, as applications, we give numerical criteria to determine when these classes of gluing of germs of complex analytic spaces are smooth, singular, complete intersections and Gorenstein, in terms of their Betti numbers. In particular, we show that the gluing of the same germ of complex analytic space along any subspace is always a singular germ.

Dr H. Keith Sigmundson co-authored a seminal article (with the late Dr Milton Diamond) that revealed the truth about a highly controversial twin case. Specifically, the genitals of an infant male monozygotic twin were accidentally destroyed during a medical procedure performed to alleviate his difficult urination. The child’s parents were advised to physically and psychologically transform their twin son into a girl. Occasional reports about the case indicated that the plan was successful, but some members of the medical community were doubtful. An interview with Dr H. Keith Sigmundson, for the purpose of obtaining his unique perspective on this case, is presented. The interview is followed by a tribute to our late twin research colleague, Dr John L. Hopper, of Melbourne, Australia. A review of research on nonhuman primate twinning, an overview of a 2024 documentary film, The Accidental Twins, and a story of different looking identical twin newborns are also provided.