Violence restrained: Effects of self-regulation and its depletion on aggression

Aggressive impulses arise from many factors, but they are usually held in check by social norms for self-control. Thus, the proximal cause of aggression is often failure of self-restraint. In five studies, depleted capacity for self-regulation (caused by prior, even irrelevant acts of self-regulation) increased aggressive responding, especially after an insulting provocation. When participants were insulted and their self-regulatory strength was depleted (i.e., after completing previous tasks that required self-regulation), participants were more likely to aggress. When the urge to aggress was relatively weaker (i.e., when participants were not insulted), self-regulatory depletion did not increase aggressive behavior. This effect was moderated by trait self-control: Participants low in trait self-control were particularly likely to express intentions of behaving aggressively in response to provocation, whereas participants high in trait self-control did not express intentions of responding aggressively. Laboratory, autobiographical memory, and hypothetical responses confirmed the pattern.     

Contingency tracking during unsignaled delayed reinforcement

Three experiments were conducted with rats in which responses on one lever (labeled the functional lever) produced reinforcers after an unsignaled delay period that reset with each response during the delay. Responses on a second, nonfunctional, lever did not initiate delays, but, in the first and third experiments, such responses during the last 10 s of a delay did postpone food delivery another 10 s. In the first experiment, the location of the two levers was reversed several times. Responding generally was higher on the functional lever, though the magnitude of the difference diminished with successive reversals. In the second experiment, once a delay was initiated by a response on the functional lever, in different conditions responses on the nonfunctional lever either had no effect or postponed food delivery by 30 s. The latter contingency typically lowered response rates on the nonfunctional lever. In the first two experiments, both the functional and nonfunctional levers were identical except for their location; in the third experiment, initially, a vertically mounted, pole-push lever defined the functional response and a horizontally mounted lever defined the nonfunctional response. Higher response rates occurred on the functional lever. These results taken together suggest that responding generally tracked the response-reinforcer contingency. The results further show how nonfunctional-operanda responses are controlled by a prior history of direct reinforcement of such responses, by the temporal delay between such responses and food delivery, and as simple generalization between the two operanda.     

Philosophical investigations into the essence of pediatric suffering

Theoretical Medicine and Bioethics -     

A Critique of the Husserlian and Heideggerian Concepts of Earth: Toward a Transcendental Earth That Accords with the Experience of Life

This paper presents an exposition and critical appraisal of the concepts of earth that appear almost simultaneously in essays by Husserl and Heidegger in the mid 1930s (the former in a fragment from 1934 on the ground of all possible experience of motion and rest, and the latter most famously in his 1935–6 essay, “The Origin of the Work of Art”). I argue that while both of these earths are noteworthy insofar as they suggest, each in its own way, the isolation of a non-worldly dimension of disclosure, nevertheless, neither Husserl nor Heidegger succeeds in fully emancipating the earth from the logic of the world. In Husserl's case, the earth is implicated in a fourfold schema involving: the absolute fixity of the world; the horizon of all being, sense, and judgment; the transcendental unity of the world; and the lifeworld as the basis of a common humanity. In Heidegger's case, the earth is construed as the “stream of boundary-setting” that, as the primordial adversary of the world, accomplishes the rising-up of beings into the open of being. The effect of this failure on the part of both philosophers to achieve an adequate ontological segregation of world and earth is to devalue the naïve image of the earth apprehended in the natural attitude even while the earth-dimension is divested of any discernable earthly character, leaving the earth itself barren and abstract, a pure category of thought rather than the horizon of actually lived life.     

Can bare dispositions explain categorical regularities?

One of the traditional desiderata for a metaphysical theory of laws of nature is that it be able to explain natural regularities. Some philosophers have postulated governing laws to fill this explanatory role. Recently, however, many have attempted to explain natural regularities without appealing to governing laws. Suppose that some fundamental properties are bare dispositions. In virtue of their dispositional nature, these properties must be (or are likely to be) distributed in regular patterns. Thus it would appear that an ontology including bare dispositions can dispense with governing laws of nature. I believe that there is a problem with this line of reasoning. In this essay, I’ll argue that governing laws are indispensable for the explanation of a special sort of natural regularity: those holding among categorical properties (or, as I’ll call them, categorical regularities). This has the potential to be a serious objection to the denial of governing laws, since there may be good reasons to believe that observed regularities are categorical regularities.     

RT distributional analysis of cognitive-control-related brain activity in first-episode schizophrenia

Impairments in cognitive control are a defining feature of schizophrenia. Aspects of cognitive control include proactive control—the maintenance of task rules or goals to bias attention and maintain preparedness—and reactive control—the engagement of attention in reaction to changing cognitive demands. Proactive control is thought to be particularly impaired in schizophrenia. We sought to examine proactive and reactive control in schizophrenia, as measured by reaction time (RT) variability, and especially long RTs, which are thought to represent lapses in proactive control, during the Stroop paradigm. Furthermore, we sought to examine the neural underpinnings of lapses in proactive control and the subsequent engagement of reactive control in those with schizophrenia, as compared to healthy controls, using fMRI. We found that patients with schizophrenia displayed greater RT variability and more extremely long RTs than controls suggesting that proactive control was weaker in the schizophrenia than in the control group. All of the subjects engaged regions of the cognitive control network during long RTs, consistent with an engagement of reactive control following a failure in proactive control on these trials. The schizophrenia group, however, displayed significantly diminished activity in these regions relative to controls. Our results suggest increased failures in proactive control, but also impaired reactive control, in schizophrenia as compared to healthy subjects.     

Further Validation of the Social and Emotional Health Survey for High School Students

The Social Emotional Health Survey (SEHS) was developed with the aim of assessing core cognitive dispositions associated with adolescents’ positive psychosocial development. Using a new sample, the present study sought to extend previous SEHS research by coadministering it with the Behavioral Emotional Screening System (BESS). The sample included 2,240 students in Grades 9-12 from two comprehensive high schools located in a major west coast USA city. A majority of the students were of Latino/a heritage (72 %) and had experienced disadvantaged economic circumstances (80 % at school 1 and 68 % at school 2). Confirmatory factor analyses supported the original SEHS factor structure composed of the first-order constructs of belief-in-self, belief-in-others, emotional competence, and engaged living, which parsimoniously mapped on to a second-order “covitality” factor. Complete factorial invariance was found across four groups formed by crossing gender (male, female) and age (ages 13–15, ages 16–18). Latent means analysis found several small to moderate effects size differences, primarily for the belief-in-self and belief-in-others first-order latent traits. A SEM analysis found that the SEHS measurement model, including covitality was a significant negative predictor of psychological distress as measured by the BESS and was positively associated with students’ end-of-semester grade point average. The discussion focuses on implications for conceptualizing the core psychological components of adolescents’ positive quality of life and how schools can use the SEHS as part of a whole-school procedure to screen for students’ complete mental health.