What <Emphasis Type="Italic">ought</Emphasis> probably means,and why you can’t detach it

Some intuitive normative principles raise vexing ‘detaching problems’ by their failure to license modus ponens. I examine three such principles (a self-reliance principle and two different instrumental principles) and recent stategies employed to resolve their detaching problems. I show that solving these problems necessitates postulating an indefinitely large number of senses for ‘ought’. The semantics for ‘ought’ that is standard in linguistics offers a unifying strategy for solving these problems, but I argue that an alternative approach combining an end-relational theory of normativity with a comparative probabilistic semantics for ‘ought’ provides a more satisfactory solution.     

THE AMAZING PLACENTA: EVOLUTION AND LIFELINE TO HUMANNESS

The placenta arose during mammalian evolution, which is recent in evolutionary terms. Genetic changes underlying placental development remain identifiable by the new science of comparative genomics (approximately post-2000). Randomly arising features of genomes including endogenous retroviruses and transposable elements have provided structural genes and gene-regulatory motifs responsible for innovations in placental biology. Stochastic genetic events indeed contribute to new functionality. Theologically, random mutations are part of the strategy by which the divine purpose for humanity is attained. Placental function critically underlies human brain development, and suboptimal function, associated with environmental conditions and maternal distress, contributes to mental health deficits in the offspring. Many enter life with handicaps arising from contingent events in utero, mandating understanding, compassion, and socioemotional support, imperatives native to moral including biblical values. The extended period of development afforded by placentation enables prenatal parenting, with implications for sensitive and devoted parental commitment.     

Civic engagement patterns and transitions over 8 years: the AmeriCorps national study

Latent transition analysis was used to examine civic engagement transitions across 2 waves spanning 8 years in a sample of AmeriCorps participants and a comparison group (N = 1,344; 77% female). Latent indicators of civic engagement included volunteering, community participation, civic organizational involvement, local and national voting, civic consciousness, and perceptions of civic knowledge. Three latent statuses were identified; inactive, voting involved, and highly committed. Consistent with life cycle theories of political engagement, the inactive status was most prevalent at Wave 1 and the voting-involved status most prevalent at Wave 4. AmeriCorps members were less involved in voting at Wave 1 but, among voters, were more likely to become highly committed by Wave 4. Compared with those who did not attend college, those who did had higher levels of civic engagement initially and over time. Young participants and Asian youths demonstrated lower levels of involvement initially compared with older participants or White youths. Findings suggest that national service programs geared toward young people who are not in college may hold promise for addressing gaps in civic engagement.     

Cue gradient and cue density interact in the detection and recognition of objects defined by motion,contrast, or texture

The human visual system is able to extract an object from its surrounding using a number of cues. These include foreground/background gradients in disparity, motion, texture, colour, and luminance. We have investigated normal subjects' ability to detect objects defined by either motion, texture, or luminance gradients. The effects of manipulating cue density and cue foreground/background gradient on both detection and recognition accuracy were also investigated. The results demonstrate a simple additive relationship between cue density and cue gradient across forms defined by motion, luminance, and texture. The results are interpreted as evidence for the notion that form parsing is achieved via a similar algorithm across anatomically distinct processing streams.     

The accessibility of group memberships

The authors performed 2 experiments to examine the accessibility of thoughts about group memberships (i.e., collective self-cognitions) relative to thoughts about traits, states, and behaviors (i.e., private self-cognitions). Few collective self-cognitions were accessible for the present participants from an individualist culture. Furthermore, collective self-cognitions were highly associated with each other in a self-structure. The findings were interpreted in terms of the two-baskets theory that private and collective self-cognitions tend to be stored relatively separately in memory (D. Trafimow, H.C. Triandis, & S.G. Goto, 1991).     

Language and Civilian Deaths: Denying Responsibility for Casualties in the Gaza Conflict 2014

The United Nations High Commissioner for Refugees (UNHCR) estimated that 1,462 civilians were killed in Gaza, and six civilians were killed in Israel during the conflict of 2104. This article uses discursive psychology to examine how Israeli spokespeople described the conflict, and Israel's actions, in ways that denied responsibility for civilian deaths. They did this using a number of discursive strategies. These included: (1) using passive and noun constructions which minimized reference to civilian deaths and erased Israeli involvement in those deaths; (2) repeatedly naming and providing details of Hamas weapons and attacks while avoiding reference to Israeli weapons and violence; (3) presenting Israel as only trying to avoid civilian deaths; and (4) describing Hamas as responsible for all deaths. These types of linguistic constructions allow governments and potential supporters to avoid acknowledging the consequences of their military actions and is one way that the virtuous nature of the ingroup is reinforced in political discourse.     

The cortex in multidimensional space: where do cortical areas come from?

The concept of a cortical ‘area’ as a discrete phylogenetic, developmental and computational unit is evaluated. Evidence including the comparative organization of the forebrain in vertebrates, the organization of cortex in different mammals, the scaling of the areas of the isocortex in mammals, and the early molecular differentiation of the cortex all suggest a special status for the primary sensory cortical areas, particularly the visual cortex. Furthermore, the overlapping gradients of early molecular expression and the patterning of cortical structure and connectivity by thalamic input suggest a new view of cortical organization that is different from the traditional view of a developmentally mosaic cortex; this view proposes that distinct cortical areas arise combinatorily from the multiple overlapping processes imposed upon the developing cortex.     

Updating representations of learned scenes

Two experiments were designed to compare scene recognition reaction time (RT) and accuracy patterns following observer versus scene movement. In Experiment 1, participants memorized a scene from a single perspective. Then, either the scene was rotated or the participants moved (0°–360° in 36° increments) around the scene, and participants judged whether the objects’ positions had changed. Regardless of whether the scene was rotated or the observer moved, RT increased with greater angular distance between judged and encoded views. In Experiment 2, we varied the delay (0, 6, or 12 s) between scene encoding and locomotion. Regardless of the delay, however, accuracy decreased and RT increased with angular distance. Thus, our data show that observer movement does not necessarily update representations of spatial layouts and raise questions about the effects of duration limitations and encoding points of view on the automatic spatial updating of representations of scenes.