Socrates and Superiority

I propose an alternative interpretation of the Crito. The arguments that are typically taken to be Socrates' primary arguments against escape are actually supplementary arguments that rely on what I call the Superiority Thesis, the thesis that the state and its citizens are members of a moral hierarchy where those below are tied by bonds of obligation to those above. I provide evidence that Socrates holds this thesis, demonstrate how it resolves a number of apparent difficulties, and show why my interpretation is preferable to competing interpretations.     

Neural coding of reward magnitude in the orbitofrontal cortex of the rat during a five-odor olfactory discrimination task

The orbitofrontal cortex (OBFc) has been suggested to code the motivational value of environmental stimuli and to use this information for the flexible guidance of goal-directed behavior. To examine whether information regarding reward prediction is quantitatively represented in the rat OBFc, neural activity was recorded during an olfactory discrimination “go”/“no-go” task in which five different odor stimuli were predictive for various amounts of reward or an aversive reinforcer. Neural correlates related to both actual and expected reward magnitude were observed. Responses related to reward expectation occurred during the execution of the behavioral response toward the reward site and within a waiting period prior to reinforcement delivery. About one-half of these neurons demonstrated differential firing toward the different reward sizes. These data provide new and strong evidence that reward expectancy, regardless of reward magnitude, is coded by neurons of the rat OBFc, and are indicative for representation of quantitative information concerning expected reward. Moreover, neural correlates of reward expectancy appear to be distributed across both motor and nonmotor phases of the task.     

Beyond the “Delivery Problem”: Why There is “No Such Thing as a Language”

In “Practical Knowledge of Language”, C.-h. Tsai criticizes the arguments in “Swimming and Speaking Spanish” (this issue, pp. 331–341), on the grounds that its account of knowledge of language as knowledge-how is mistaken. In its place, he proposes an alternative account in terms of Russell’s concept “knowledge-by-acquaintance”. In this paper, I show that this account succeeds neither in displacing the account in Swimming and Speaking Spanish nor in addressing Tsai’s main concern: solving the “delivery problem”.     

Conceptual and perceptual priming and dissociation in chronic posttraumatic stress disorder

Cognitive models of posttraumatic stress disorder (PTSD) assert that memory processes play a significant role in PTSD (see e.g., Ehlers & Clark, 2000). Intrusive reexperiencing in PTSD has been linked to perceptual processing of trauma-related material with a corresponding hypothesized lack of conceptual processing. In an experimental study that included clinical participants with and without PTSD (N = 50), perceptual priming and conceptual priming for trauma-related, general threat, and neutral words were investigated in a population with chronic trauma-induced complaints as a result of the Troubles in Northern Ireland. The study used a new version of the word-stem completion task (Michael, Ehlers, & Halligan, 2005) and a word-cue association task. It also assessed the role of dissociation in threat processing. Further evidence of enhanced perceptual priming in PTSD for trauma stimuli was found, along with evidence of lack of conceptual priming for such stimuli. Furthermore, this pattern of priming for trauma-related words was associated with PTSD severity, and state dissociation and PTSD group made significant contributions to predicting perceptual priming for trauma words. The findings shed light on the importance of state dissociation in trauma-related information processing and posttraumatic symptoms.     

Personality traits and cognitive styles as risk factors for serious suicide attempts among young people.

The contribution of a series of measures of personality and/or cognitive style to serious suicide attempt risk in young people was examined in a case-control study. Individuals making suicide attempts had elevated odds of hopelessness, neuroticism, introversion, low self-esteem, impulsiveness, and external locus of control. When allowance was made for intercorrelations between these measures, hopelessness, neuroticism, and external locus of control remained significant risk factors for serious suicide attempt; self-esteem, extraversion, and impulsiveness were not significantly associated with suicide attempt risk. Nonsignificant findings were explained by the presence of substantial correlations between these measures and measures of hopelessness, neuroticism, and external locus of control.     

Avoidance as a predictor of the biological course of HIV infection over a 7-year period in gay men.

The present study prospectively investigated the relation between avoidance coping and active cognitive and behavioral coping and the progression of HIV infection over 7 years in 181 gay men. Findings revealed that for a number of medical and behavioral factors, (a) avoidance coping predicted a lower rate of decline in CD4 cells, (b) the proportional hazard (PH) attributable to avoidance of developing a syncytium-inducing HIV variant was 0.72 (95% confidence interval [CI]: 0.53 - 0.99, p < .05), and (c) the PH attributable to avoidance of dropping below 200 CD4 cells/microl was 0.66 (95% CI: 0.50 - 0.89, p < .01). Avoidance coping was not related to the development of AIDS-defining clinical symptoms. Active cognitive and behavioral coping was not related to the outcome measures.