PRESENTISM,PERSISTENCE AND COMPOSITION

Pace Benovsky's ‘Presentism and Persistence,’ presentism is compatible with perdurantism, tropes and bundle‐of‐universals theories of persisting objects. I demonstrate how the resemblance, causation and precedence relations that tie stages together can be accommodated within an ersatzer presentist framework. The presentist account of these relations is then used to delineate a presentist‐friendly account of the inter‐temporal composition required for making worms out of stages. The defense of presentist trope theory shows how properties with indexes other than t may be said to exist at t. This involves an account of how times other than t exist at t, and how times may be multiply located at any given time. Benovsky's objection to bundles of universals is shown to assume that a bundle of properties must have the properties of its element properties.     

Clamped Corticosterone (B) Reveals the Effect of Endogenous B on Both Facilitated Responsivity to Acute Restraint and Metabolic Responses to Chronic Stress

To determine the effects of both corticosterone (B) and chronic stressors on acute ACTH responses to restraint, young male rats were exposed to streptozotocin-induced diabetes, cold (5-7 degreesC) or intracerebroventricular (icv) neuropeptide Y (NPY) for 5 d and then exposed to restraint within 2 h after lights on. Two groups of rats were studied: intact and adrenalectomized replaced with B pellets that maintained plasma B in the normal mean 24-h range of intact rats. In addition to ACTH and B responses to restraint on d 5, body weight, food intake, fat depots, glucose and other hormones were measured to determine the role of stress-induced elevations in B on energy balance. ACTH responses to restraint were normal in intact rats subjected to diabetes or cold. By contrast, there was no ACTH or B response to restraint in NPY-infused intact rats. All 3 groups of chronically stimulated adrenalectomized rats with clamped B had facilitated ACTH responses to restraint compared to their treatment controls. Overall food intake increased in all groups of stressed rats; however, augmented intake occurred only during the light in intact rats and equally in the light and dark in B-clamped rats. White adipose depot weights were decreased by both diabetes and cold and increased by NPY in intact rats; the decreases with cold and increases with NPY were both blunted and changes in fat stores were not significant in adrenalectomized, B-clamped rats. We conclude that: 1. diabetes- and cold-induced facilitation of restraint-induced afferent input to hypothalamic control of the hypothalamo-pituitary-adrenal (HPA) axis is opposed in intact rats by the elevated feedback signal of B secretion; 2. NPY does not induce facilitation of afferent stress pathways; 3. chronic stimulation of the HPA axis induces acute hyperresponsiveness of hypothalamic neurons to restraint provided that the afferent input of this acute stimulus is not prevented by B feedback; 4. stimulus-induced elevations in B secretion result in day-time feeding; 5. insensitivity of both caloric efficiency and white fat stores to chronic stress in adrenalectomized, B-clamped rats results from loss of normally variable B levels.     

How training and promotion opportunities,career expectations,and two dimensions of organizational justice explain discretionary work effort

Contemporary work is highly interdependent, requiring discretionary work effort (DWE) in response to colleagues and customers. According to social exchange theory, organizational support encourages DWE as a form of employee reciprocation. Our model integrating social exchange and expectancy theory anticipates future career returns from organizational support in the form of training and promotion opportunity. Positive career expectations strengthen feelings of employee obligation that are realized in higher levels of DWE. In addition, career expectations are heightened when these opportunities are provided under procedurally just conditions. Furthermore, the relationship between career expectation and felt obligation is strengthened when interactional justice is high. Using structural equation modeling, these hypotheses are successfully tested on a survey of 201 bank employees and their supervisors. Implications for research and practice are discussed.     

Terminating and exhaustive search in lexical access

Two experiments which test predictions derived from the assumption that lexical access involves a search process are reported. In the first experiment, test items must be classified as ambiguous or unambiguous, and in the second experiment, they are classified according to their syntactic properties. In both experiments, it is shown that when the target of the search is a nonexistent entry, an exhaustive search is involved, even though the test items are words. Further, in these conditions, frequency of occurrence is no longer related to decision time, as it is in lexical decision experiments. It is concluded that the search model adequately explains the procedure whereby the most common meaning of a homograph is accessed, but that the less common meaning is accessed in some completely different manner.     

A differentiated approach to the link between positive emotion,motivation, and eudaimonic well-being

Many studies have highlighted the role that positive emotions play in promoting eudaimonic well-being, yet often fail to differentiate between discrete positive emotions (e.g. gratitude, compassion, pride, and contentment). As such, potential functional differences among positive emotions in contributing to eudaimonic well-being may have been overlooked. The present study (N = 273) differentiated communion from agency motivation as well as other-focused from self-focused eudaimonic well-being. In line with a hypothesized model, pride contributed positively to self-focused eudaimonic well-being indirectly via agency motivation, and contentment was directly linked positively to self-focused eudaimonic well-being. Compassion contributed positively to other-focused eudaimonic well-being indirectly via communion motivation and gratitude was directly linked positively to other-focused eudaimonic well-being. While several other links were observed, hypothesized links were generally stronger. These findings highlight the potential utility of adopting approaches that differentiate among positive emotions in applied and theoretical work in the field of positive psychology.