Primeness, Internalism and Explanatory Generality

Williamson (2000) [Knowledge and its Limits, Oxford: Oxford University Press] argues that attempts to substitute narrow mental states or narrow/environmental composites for broad and factive mental states will result in poorer explanations of behavior. I resist Williamson’s arguments and use Twin-Earth style cases to argue for the causal inertness of broad mental states.     

Transient activation of the CA3 Kappa opioid system in the dorsal hippocampus modulates complex memory processing in mice

The hippocampus plays a central role in various forms of complex learning and memory. Opioid peptides and receptors are abundant in the hippocampus. These peptides are co-released with glutamate from mossy fiber- and lateral perforant path-synapses. In this study, we evaluated the functional relevance of the CA3 Kappa opioid receptors (KOR) by transient pharmacological activation or inactivation using single bilateral intrahippocampal microinjections of a selective agonist (U50,488H, 1 or 2.5 nmol), a selective antagonist (nor-binaltorphimine, norBNI 5 nmol) or a mixture of both. C57Bl/6J mice were tested in a fear conditioning paradigm (FC) or in a modified version of the water maze task thought to reveal how flexibly animals can learn and manipulate spatial information (WM). In FC, the agonist (2.5 nmol) decreased context-induced (but not tone-induced) freezing whereas norBNI had no effect. The impairment caused by the agonist U50,488H was blocked by the injection of norBNI, suggesting that overstimulation of CA3-KOR impairs the acquisition and consolidation of contextual fear-related memory. In the WM task, mice were trained repeatedly each day to find a hidden platform. After having reached this goal, the platform position was changed the next day for a new task. U50,488H injection before the last task abolished the previously acquired ability to find rapidly a new platform location, whereas adding norBNI reversed this impairment. Thus, in the mouse, even partial and topographically restricted activation of CA3-KOR entails impairments in two different hippocampus-dependent tasks, indicating functional relevance of the kappa opioid system.     

The physiology of willpower: linking blood glucose to self-control.

Past research indicates that self-control relies on some sort of limited energy source. This review suggests that blood glucose is one important part of the energy source of self-control. Acts of self-control deplete relatively large amounts of glucose. Self-control failures are more likely when glucose is low or cannot be mobilized effectively to the brain (i.e., when insulin is low or insensitive). Restoring glucose to a sufficient level typically improves self-control. Numerous self-control behaviors fit this pattern, including controlling attention, regulating emotions, quitting smoking, coping with stress, resisting impulsivity, and refraining from criminal and aggressive behavior. Alcohol reduces glucose throughout the brain and body and likewise impairs many forms of self-control. Furthermore, self-control failure is most likely during times of the day when glucose is used least effectively. Self-control thus appears highly susceptible to glucose. Self-control benefits numerous social and interpersonal processes. Glucose might therefore be related to a broad range of social behavior.     

How emotion shapes behavior: feedback, anticipation, and reflection, rather than direct causation.

Fear causes fleeing and thereby saves lives: this exemplifies a popular and common sense but increasingly untenable view that the direct causation of behavior is the primary function of emotion. Instead, the authors develop a theory of emotion as a feedback system whose influence on behavior is typically indirect. By providing feedback and stimulating retrospective appraisal of actions, conscious emotional states can promote learning and alter guidelines for future behavior. Behavior may also be chosen to pursue (or avoid) anticipated emotional outcomes. Rapid, automatic affective responses, in contrast to the full-blown conscious emotions, may inform cognition and behavioral choice and thereby help guide current behavior. The automatic affective responses may also remind the person of past emotional outcomes and provide useful guides as to what emotional outcomes may be anticipated in the present. To justify replacing the direct causation model with the feedback model, the authors review a large body of empirical findings.     

The development of the political philosophy of Merleau-Ponty

This article follows the development of Merleau-Ponty’s political philosophy from his 1947 text, Humanism and Terror, through a number of essays in the Adventures of the Dialectic, to the Preface to Signs published in 1959. It shows the process by which Merleau-Ponty escaped the “grip of marxism” as a philosophy of history. It notes the link between his philosophy of history and the concrete historical events of his times, particularly the Russian Revolution and its degeneration into Stalinism. It suggests a certain analogy between Merleau-Ponty’s reflection on the October Revolution and Kant’s reflection on the French Revolution. The notion of the universal class of the proletariat is the guiding thread in the analyses of both Merleau-Ponty’s proximity to marxism and the process by which he frees himself from its grip. We observe the role that this concept plays in Humanism and Terror and in the essays on Weber and Lukacs in the Adventure of the Dialectic where we eventually see its dissolution. It is argued that Merleau-Ponty arrives at a new conception of historical meaning which is neither totalizing or empiricist. The paper concludes by presenting an outline of the direction that his philosophy of history took after he extricated himself from marxism. This new philosophy took the form of a critical reflection on the role of the “notion of the hero” in 20th century political philosophy in general, particularly in Heidegger and Sartre.

Hume’s Big Brother: counting concepts and the bad company objection

A number of formal constraints on acceptable abstraction principles have been proposed, including conservativeness and irenicity. Hume’s Principle, of course, satisfies these constraints. Here, variants of Hume’s Principle that allow us to count concepts instead of objects are examined. It is argued that, prima facie, these principles ought to be no more problematic than HP itself. But, as is shown here, these principles only enjoy the formal properties that have been suggested as indicative of acceptability if certain constraints on the size of the continuum hold. As a result, whether or not these higher-order versions of Hume’s Principle are acceptable seems to be independent of standard (ZFC) set theory. This places the abstractionist in an uncomfortable dilemma: Either there is some inherent difference between counting objects and counting concepts, or new criteria for acceptability will need to be found. It is argued that neither horn looks promising.     

Dispositional happiness and college student GPA: Unpacking a null relation

We examined the mechanisms that underlie the null relation between dispositional happiness and college grade point average (GPA) by testing the hypothesis that dispositional happiness has positive and negative indirect links to GPA that offset each other. The sample consisted of 317 first-year students. Using structural equation modeling, we found that dispositional happiness exerted a positive indirect effect on cumulative GPA via commitment to college (p < .01) and a negative indirect effect on cumulative GPA via satisfaction with peer (student) relationships (p < .05). As predicted, the sum of its indirect effects on cumulative GPA was not significant (p = .22).     

If She’s a Feminist it Must Not be Discrimination: The Power of the Feminist Label on Observers’ Attributions About a Sexist Event

This study examined the reactions of 207 undergraduate women (mean age?=?20.6, 91.3% White) from a Northeastern U.S. university to a scenario in which a feminist or non-feminist woman did or did not indicate that gender discrimination was the reason that she was passed over for a leadership role. Participants rated the feminist woman as less a victim of discrimination and as more of a complainer than the non-feminist woman. Participants also had a more positive impression of the woman and rated her as less of a complainer when discrimination was certain or ambiguous than when there was little evidence of discrimination. Discussion considers how a feminist label may lead to discounting the possibility of gender discrimination.     

Measuring Lifestyle and Attachment: An Empirical Investigation Linking Individual Psychology and Attachment Theory

P. R. Peluso, J. P. Peluso, J. F. White, and R. M. Kern (2004) reviewed the theoretical constructs underlying the similarities between lifestyle and attachment style. Specifically, they suggested that the individual psychology construct of lifestyle (or style of life) and attachment style should be empirically investigated. The present research provided an empirical analysis of the concepts of lifestyle and attachment style and compared the methods for assessing these concepts. The findings supported the overall hypotheses that attachment style and lifestyle are similar constructs.