Blocking with serial compound stimuli: The role of local context and second-order associations

Blocking was studied with rats in two serial conditioning experiments in which CS1 was followed by CS2 and then shock. Experiment 1 demonstrated that pretraining with CS1 was able to block conditioning to CS2 when the pretraining consisted of trace conditioning. But when serial conditioning was used for pretraining, with a third stimulus as the second element of the compound, then blocking was not detected during the subsequent phase. In Experiment 2 the effect of pretraining with CS2 on blocking with CS1 was examined. Blocking was effective, but only when steps were taken to minimize the growth of second-order associations resulting from the pairing of CS1 with CS2. These results are consistent with a principle stating that the ability of a pretrained stimulus to block the added stimulus in a compound depends on the relative contiguity of each stimulus to the US.     

Brain-Injured Footballers,Voluntary Choice and Social Goods. A Reply to Corlett

ABSTRACT

In this essay, we respond to Angelo Corlett’s criticism of our paper ‘Ethics, Brain Injuries, and Sports: Prohibition, Reform, and Prudence’. To do so, first, we revisit certain assumptions and arguments Corlett makes concerning intercollegiate football and brain injuries in his 2014 paper ‘Should intercollegiate football be eliminated?’. Second, we identify and criticize two key elements in his response regarding (a) ‘luck egalitarianism’, and (b) ‘public goods’. We conclude by reaffirming our critical reading of Corlett’s original 2014 paper and by identifying further elements (i) luck and the nature of individual responsibility; and (ii) the nature of sports as public rather than merely private goods, that he would have to address for his latter 2018 position to hold true.     

Universal Gravitation and the (Un)Intelligibility of Natural Philosophy

This article centers on Hume's position on the intelligibility of natural philosophy. To that end, the controversy surrounding universal gravitation shall be scrutinized. It is very well known that Hume sides with the Newtonian experimentalist approach rather than with the Leibnizian demand for intelligibility. However, what is not clear is Hume's overall position on the intelligibility of natural philosophy. It shall be argued that Hume declines Leibniz's principle of intelligibility. However, Hume does not eschew intelligibility altogether; his concept of causation itself stipulates mechanical intelligibility.     

Housing insecurity and intersecting social determinants of health among transgender people in the USA: A targeted ethnography

Abstract

Background: Housing is an important social determinant of health (SDOH). Transgender people face a unique blend of discrimination and compromised social services, putting them at risk for housing insecurity and associated public health concerns.

Aims: This targeted ethnography explores housing insecurity as a SDOH among transgender people in the U.S.

Methods: In-depth interviews were conducted with transgender people (n?=?41) throughout the U.S.A., identified through purposive sampling. A semi-structured guide was used to elicit personal stories and peer accounts of insecure housing experiences and coping strategies. Interviews were audio recorded and transcribed. Data was coded, sorted, and analyzed for key themes.

Results: Responses revealed pervasive housing insecurity and inter-related challenges. Respondents discussed how intersecting identities create unique constellations of vulnerability, which “intersect like a star.” Financial insecurity and interpersonal rejection were lead housing insecurity causes, often resulting in psychological strain, which was sometimes addressed with substances and sexual risk-taking. These factors were cyclically accompanied by financial and employment insecurity and a cascade of unmet social needs. Social support facilitated coping.

Discussion: Findings support increasing transgender housing security intervention resources that address intersecting and cyclical discrimination, trauma, housing, employment, and health issues.