Social facilitation in young toddlers

As a test of Zajonc's social facilitation hypothesis, the behavior of 18 young toddlers (16-24 mo.) was observed. Their performance on a simple task was incongruent with his hypothesis, that is, these young toddlers may not evaluate their outcomes in relation to a social standard.     

Roles of salience and strategy in conjunction search

In some cases, the search for a conjunction target proceeds through the smaller group of elements in a display, whereas in others, search is limited to those elements that share a particular feature with the target. In 6 experiments, participants searched for a conjunction target among displays consisting of various proportions of 2 distractor types. Smaller-group search was more prevalent than target-feature search with denser displays and with features that were highly discriminable. Explicit instructions to limit search to a specific feature affected performance only when the discriminability of the guiding feature was much greater than the other target feature. Together, these experiments show that bottom-up factors have more influence in guiding conjunction searches than previously thought.     

Memory-enhancing corticosterone treatment increases amygdala norepinephrine and Arc protein expression in hippocampal synaptic fractions

Considerable evidence indicates that glucocorticoid hormones enhance the consolidation of memory for emotionally arousing events through interactions with the noradrenergic system of the basolateral complex of the amygdala (BLA). We previously reported that intra-BLA administration of a β-adrenoceptor agonist immediately after inhibitory avoidance training enhanced memory consolidation and increased hippocampal expression of the protein product of the immediate early gene activity-regulated cytoskeletal-associated protein (Arc). In the present experiments corticosterone (3 mg/kg, i.p.) was administered to male Sprague-Dawley rats immediately after inhibitory avoidance training to examine effects on long-term memory, amygdala norepinephrine levels, and hippocampal Arc expression. Corticosterone increased amygdala norepinephrine levels 15 min after inhibitory avoidance training, as assessed by in vivo microdialysis, and enhanced memory tested at 48 h. Corticosterone treatment also increased expression of Arc protein in hippocampal synaptic tissue. The elevation in BLA norepinephrine appears to participate in corticosterone-influenced modulation of hippocampal Arc expression as intra-BLA blockade of β-adrenoceptors with propranolol (0.5 μg/0.2 μL) attenuated the corticosterone-induced synaptic Arc expression in the hippocampus. These findings indicate that noradrenergic activity at BLA β-adrenoceptors is involved in corticosterone-induced enhancement of memory consolidation and expression of the synaptic-plasticity-related protein Arc in the hippocampus.     

Climate Change is Unjust War: Geoengineering and the Rising Tides of War

Climate change is undeniably a global problem, but the situation is especially dire for countries whose territory is comprised entirely or primarily of low‐lying land. While geoengineering might offer an opportunity to protect these states, international consensus on the particulars of any geoengineering proposal seems unlikely. To consider the moral complexities created by unilateral deployment of geoengineering technologies, we turn to a moral convention with a rich history of assessing interference in the sovereign affairs of foreign states: the just war tradition. We argue that the just war framework demonstrates that, for these nations, geoengineering offers a justified form of self‐defense from an unwarranted, albeit unintentional, aggression. This startling result places our own carbon‐emitting activities in a stark new light: in perpetrating climate change, we are, in fact, waging war on the most vulnerable.     

Unconceived alternatives and conservatism in science: the impact of professionalization,peer-review,and Big Science

Synthese - Scientific realists have suggested that changes in our scientific communities over the course of their history have rendered those communities progressively less vulnerable to the...     

Comparison of blocking strategies informed by precursor assessment to decrease pica

Pica is dangerous behavior and often maintained by automatic reinforcement. We conducted a latency functional analysis (FA) using safe consumption items to verify that pica was maintained in part by automatic reinforcement and exclude participants for whom pica was likely maintained solely by attention. Next, we identified precursors to pica through a probability analysis and conducted a brief blocking assessment for participants' whose pica occurred in the alone and attention conditions of the FA. Finally, we compared blocking precursors with pica, touching an inedible item and the pica itself. Results showed that five of the six participants' pica was likely maintained by automatic reinforcement, and pica decreased during the brief blocking assessment for three of four participants. Results of the blocking comparison showed that blocking behaviors earlier in the response hierarchy was as effective as only blocking pica attempts for two participants and more effective for one participant.     

The impact of bilingual environments on selective attention in infancy

Bilingualism has been observed to influence cognitive processing across the lifespan but whether bilingual environments have an effect on selective attention and attention strategies in infancy remains an unresolved question. In Study 1, infants exposed to monolingual or bilingual environments participated in an eye‐tracking cueing task in which they saw centrally presented stimuli followed by a target appearing on either the left or right side of the screen. Halfway through the trials, the central stimuli reliably predicted targets' locations. In Study 2, the first half of the trials consisted of centrally presented cues that predicted targets' locations; in the second half, the cue–target location relation switched. All infants performed similarly in Study 1, but in Study 2 infants raised in bilingual, but not monolingual, environments were able to successfully update their expectations by making more correct anticipatory eye movements to the target and expressing faster reactive eye latencies toward the target in the post‐switch condition. The experience of attending to a complex environment in which infants simultaneously process and contrast two languages may account for why infants raised in bilingual environments have greater attentional control than those raised in monolingual environments.     

Church-based social interactions and psychotic experiences among Black Americans: findings from the National Survey of American Life

Religious attendance has generally been salutary for mental health, though recent evidence suggests that church attendance has no significant relation with psychotic experiences. This study will examine how various types of church-based social interactions might be related to psychotic experiences. We analysed data from the National Survey of American Life –a representative sample of Black Americans in the United States –and used multivariable logistic regression to examine associations between seven church-based social interaction variables and lifetime psychotic experiences. In separate models, church attendance, church member interaction, and closeness to church members were not significantly associated with psychotic experiences, while greater emotional support, negative social interactions, providing help to other church members and receiving help from fellow church members were associated with increased odds of reporting psychotic experiences. But in a fully adjusted model including all church-based social interaction variables, only negative church interactions and giving help to church members were significantly associated with psychotic experiences. Church-based social interactions did not protect against psychotic experiences, and in some cases increased risk. Future studies should explore why the deleterious aspects of social interactions prevail over the beneficial ones.     

The ends of medicine and the crisis of chronic pain

Pellegrino and Thomasma have proposed a normative medical ethics founded on a conception of the end of medicine detached from any broader notion of the telos of human life. In this essay, I question whether such a narrow teleological account of medicine can be sustained, taking as a starting point Pellegrino and Thomasma’s own contention that the end of medicine projects itself onto the intermediate acts that aim at that end. In order to show how the final end of human life similarly alters intermediate ends, such as the end of medicine, I describe Thomas Aquinas’s concept of pain and explain how his remedies for pain derive from his account of the telos of human life. In turn, this account has implications for the way in which physicians who accept such a telos would manage their patients’ pain. If a comprehensive telos for human life is necessary to make sense of even such a routine aspect of medical care, then medical ethicists may not be able to sidestep questions about the good life for human beings.

     

‘As in a Mirror’: Jonathan Edwards,Self-Love and Enlarging to Receive Another

Through a robust deployment of visual metaphors, Jonathan Edwards’s theology utilizes notions of vision to articulate his doctrine of God, creation, anthropology, redemption and ultimately glorification. Focusing on anthropology, this article attends to how human beings are constituted through sight, and reconstituted (i.e. regenerated) as they are contemplated in the Son and as they are given a vision of the Father in the Son by the Spirit of illumination. Put differently, Edwards’s anthropology is ordered around its teleology of becoming like God only if one can ‘see him as he is’ (1 Jn 3:2), which is anticipated by faith in this present age and ‘through a mirror dimly’ (1 Jn 13:12). After mooring his anthropology to broader theological concerns, the article narrows to consider how Edwards’s idiosyncratic personalism is developed around the notion of a ‘reflective self’ that can enlarge to internalize an ‘other’. Clarifying this notion is a brief comparison of a similar construction in Thomas Aquinas, showing how Edwards’s theory of loving neighbor as oneself is a unique contribution to questions concerning personhood, self-love and neighbor-love.