Differential preparatory cardiovascular responses to aversive and appetitive behavioral conditioning

Dogs were required to press a response panel either to avoid shock or obtain food. During a one-hour interval immediatelypreceding performance on the avoidance task, blood pressure increased while heart rate decreased. In contrast, both blood pressure and heart rate increased during the one-hour interval immediatelypreceding performance on the food task. During both the shock-avoidance and food performancesper se, however, elevations in heart rate and blood pressure were observed, though the avoidance task produced less consistent heart rate changes. These effects were observed (1) with different individual dogs on each of the two training procedures, and (2) with the same dogs exposed successively to both aversive and appetitive behavioral conditioning.     

Relative novelty of conditioning context influences directionality of glycemic conditioning

Previous experiments in which insulin was administered in a Pavlovian conditioning procedure obtained both hyperglycemic and hypoglycemic conditioned responses (CRs). In the present experiment the relationship of the conditioning context and the housing environment was varied. Two environments, wastebasket (WB) and metal cage (MC), were varied factorially as housing and conditioning contexts. Subgroups were injected with either insulin or saline for 6 days and then, on a test day for conditioning, all animals were administered saline. The results suggested that a hyperglycemic CR could be expected when the conditioning context is different from the housing context, but a hypoglycemic CR could be expected when the conditioning context and housing context are similar. The magnitude and reliability of conditioning were greater when it was conducted in the WB context than when conditioning was conducted in the MC context. These results are discussed in terms of stress arising from relative novelty of the conditioning environment and in terms of the salience of the conditioned stimulus (CS) used in glycemic conditioning studies.     

The development and validation of the Privacy and Data Security Concerns Scale (PDSCS)

This study describes the development and validation of the Privacy and Data Security Concerns Scale (PDSCS), designed to assess job applicants’ privacy and data security concerns. Validity evidence for the PDSCS was established with four steps including: item generation and content validation, item reduction, confirmatory factor analysis, and construct and criterion validity. Our findings supported the content and proposed factor structure of the nine‐item PDSCS. Specifically, the proposed three‐factor structure (with the subdimensions: Secure connection, inappropriate use of information, and mistrust in employer security practices) as well as a second‐order factor, (termed privacy and data security concerns) were confirmed. Additionally, evidence is presented for the criterion validity of the PDSCS and its subdimensions.     

EPISTEMOLOGICAL CONTEXTUALISM: PROBLEMS AND PROSPECTS

Epistemological contextualism has become one of the most important and widely discussed new proposals in the theory of knowledge. This special issue contributes to the debate by bringing together some of the main participants to provide a state-of-the-art discussion of the proposal. Here we offer a brief overview of the contextualist position, describe some of the main lines of criticism that have been levelled against the view, and present a summary of each of the contributions to this collection.     

Some Worries about Normative and Metaethical Sentimentalism

In this response I raise a number of problems for Michael Slote's normative and metaethical sentimentalism. The first is that his agent–based account of rightness needs be qualified in order to be plausible; any such qualification, however, leaves Slote's normative ethics in tension with his metaethical views. The second is that an agent–based ethics of empathic caring will indeed struggle to capture our common–sense understanding of deontological constraints, and that appeal to the notion of causal immediacy will be of little help here. Finally, it seems to me that Slote's metaethical account will turn out to be much less externalist (and hence, by his own lights, much less plausible) than he suspects.