Altruism Toward a Deviant in City and Small Town

A field experiment using the "Lost Letter Technique" tested the hypothesis that altruism would be higher in small towns than in cities, unless the person needing help was a social deviant. The hypothesis was derived from Milgram's (1970) overload theory, in which city dwellers are expected to become generally indifferent to, and make fewer differentiations between, unimportant others. A total of 216 letters to one of three addressees (control, somewhat deviant, highly deviant) were "lost", one-half in Tulsa, Oklahoma (population: 347,600) and one-half among 51 small, Oklahoma towns (× population: 2,002). Return rates supported the hypothesis. The data also suggest that a greater intolerance in small towns for social deviance might systematically overwhelm their generally higher levels of social responsibility. Implications are drawn regarding the danger of overgeneralizing negative attributions to urban centers.     

Reversing the Levi identity

The AGM (Alchourrón-GÄrdenfors-Makinson) model of belief change is extended to cover changes on sets of beliefs that arenot closed under logical consequence (belief bases). Three major types of change operations, namely contraction, internal revision, and external revision are axiomatically characterized, and their interrelations are studied. In external revision, the Levi identity is reversed in the sense that onefirst adds the new belief to the belief base, and afterwards contracts its negation. It is argued that external revision represents an intuitively plausible way of revising one's beliefs. Since it typically involves the temporary acceptance of an inconsistent set of beliefs, it can only be used in belief representations that distinguish between different inconsistent sets of belief.     

Assessing the social components of retirement anxiety

In 4 studies involving 308 men and 384 women aged 25-76, a reliable instrument, the Social Components of Retirement Anxiety Scale (SCRAS), was developed to assess retirement anxiety. The 23-item SCRAS measures 4 factors:Social Integration and Identity, Social Adjustment/Hardiness, Anticipated Social Exclusion, and Lost Friendships. The scale strongly predicts fear of retirement and negative attitudes toward retirement. However, it seems not to be measuring simply a generalized emotional state, exhibiting only minimal correlations with more general measures of anxiety and depression. Elevated scores were observed particularly in persons for whom major social transitions are quite difficult--for example, those who were shy, lonely, had fewer instrumental or communal traits, or expected to have little personal control over their lives after retirement.     

Cognitive functioning and cortisol profiles in first episode major depression

Major Depressive Disorder (MDD) is often associated with high levels of stress and disturbances in the Hypothalamic Pituitary Adrenal (HPA) system, yielding high levels of cortisol, in addition to cognitive dysfunction. Previous studies have shown a relationship between cortisol profile and cognitive functioning in recurrent MDD in general. More specifically, the association between hypercortisolism and cognitive functioning, such as memory and Executive Functioning (EF), and also more recently cortisol suppression has been explored. However, no studies have investigated these relationships in patients diagnosed with first episode MDD. The aim of the present study was to examine the relationship between cortisol levels before and after the Dexamethasone suppression test (DST) and cognitive function in first episode MDD patients. Twenty‐one patients meeting the DSM‐IV criteria for a first episode of MDD diagnosis were included in the study. The control group was matched for age, gender and education level. Cortisol was measured in saliva collected with Salivette sampling devices. Saliva samples were collected 4 times during a 24 hours period over two consecutive days: at awakening, after 45 minutes, after 7 hours and at 11 pm. Dexamethasone (1.0 mg) was given orally on Day 1 at 11 pm. The neuropsychological test battery consisted of standardized tests measuring executive functioning (EF) and memory functioning. Cortisol levels did not differ significantly between patients and controls on Day 1, except for the last sample before Dexamethasone administration, where the control group showed higher levels. Both groups showed suppression after Dexamethasone. On Day 2 there was a significant difference between groups at the third sample, showing a significantly lower level in the control group, suggesting that the controls have a more effective suppression profile than the patients. There were no significant correlations between cortisol levels before or after Dexamethasone and cognitive measures. The results indicate impairment on HPA‐axis functioning in first episode MDD patients, with less suppression functioning compared to healthy controls, but no relationship between cortisol profile and cognitive functioning in EF or Memory.     

When Is the Time to Hate? A Research Review on the Impact of Dramatic Events on Islamophobia and Islamophobic Hate Crimes in Europe

Social scientists have long been interested in the significance of unexpected, dramatic events for social change. However, when it comes to research on prejudice and hate crimes, the impact of sudden, dramatic events has been little considered. The purpose of this research review is to survey European data to elucidate the temporal links between unexpected events, prejudice, and hate crimes, and also to pinpoint some of the methodological problems faced by scholars studying the impact of unanticipated dramatic events on prejudice and hate crimes; the significance of unexpected events often leaves researchers without access to relevant baseline data. The studies of Islamophobia and Islamophobic hate crimes considered in the present article privilege a dynamic view of time: terrorist attacks instill a sense of uncertainty and risk and Islamophobia and hate crimes are to a large extent event-driven and reactive, and tend to flare up on the heels of dramatic events. The recent attention paid to the role of unexpected, dramatic events represents a new and very promising approach to the study of prejudice and hate crimes; with the earlier, essentially spatial research focus now complemented by a temporal focus, the chances increase of charting the underlying dynamics and causes of prejudice and hate crimes.     

Sparse Causation and Mere Abundant Causation

Philosophical Studies - Setting off from a familiar distinction in the philosophy of properties, this paper introduces a tripartite distinction between sparse causation, abundant causation and mere...     

Eradication

Eradication is a radical form of contraction that removes not only a sentence but also all of its non-tautological consequences from a belief set. Eradication of a single sentence that was included in the original belief set coincides with full meet contraction, but if the sentence is external to the belief set then the two operations differ. Multiple eradication, i.e. simultaneous eradication of several sentences, differs from full meet contraction even if the sentences to be contracted are all included in the original belief set. Eradication is axiomatically characterized and its properties investigated. It is shown to have close connections with the recovery postulate for multiple contraction. Based on these connections it is proposed that eradication rather than full meet contraction is the appropriate lower limiting case for multiple contraction operators.     

Bootstrap Contraction

We can often specify how we would contract by a certain sentence by saying that this contraction would coincide with some other contraction that we know how to perform. We can for instance clarify that our contraction by p&q would coincide with our contraction by p, or by q, or by {p, q}. In a framework where the set of potential outcomes is known, some contractions are “self-evident” in the sense that there is only one serious candidate that can be the outcome of such a contraction. Contraction by a specific contractee (sentence or set of sentences to be contracted) is bootstrapped if it is specified by saying that it coincides with some such self-evident contraction. For a wide range of (multiple) contraction operators, contractions by any contractee can be bootstrapped. This means that the selection mechanism (selection function, incision function, etc.) can be replaced by a function called a bootstrapping selector that assigns to each contractee some “self-evident” contractee that yields the same outcome. With bootstrapping we can eliminate traditional extralogical components in contraction (e.g., selection functions) and replace them by bootstrapping selectors that reflect more closely the ways in which we actually reason and argue about belief contraction.     

Cytokines and memory across the mature life span of women

Increasing evidence suggests a role of the immune system in modulation of cognition, but details on affected memory systems are largely lacking. We therefore aimed to study the relation between selected cytokines and subsets of memory, and the impact of age in these relations. From a random population-based sample (the Betula Prospective Cohort Study), 298 women (age 45-90) were studied in terms of episodic recall and recognition, semantic fluency and knowledge, and prospective memory. Circulating cytokines of relevance for cognition and aging were measured with ELISA. Levels of interleukin (IL)-6 and sIL-2R were significantly and negatively associated with most cognitive variables, while the opposite was true for IL-1β. Age shared substantial variance with both cytokines and memory, and turned most correlations non-significant when controlled for together with education, BMI and presence of disease. Interactions between age and cytokines were further analyzed in multiple regressions. For IL-6, significant negative interactions with age were found for semantic fluency (p<0.05) and prospective memory (p<0.01), and for sIL-2R in predicting semantic knowledge (p<0.05), indicating an increased negative impact of these cytokines on memory with increasing age. In conclusion, the study indicates a relation between cytokines and memory that appears to be largely mediated by age, and supports the suggestion that cytokine dysregulation with higher age may interact with cognitive aging.