Associations between cortical thickness and general intelligence in children,adolescents and young adults

Neuroimaging research indicates that human intellectual ability is related to brain structure including the thickness of the cerebral cortex. Most studies indicate that general intelligence is positively associated with cortical thickness in areas of association cortex distributed throughout both brain hemispheres. In this study, we performed a cortical thickness mapping analysis on data from 182 healthy typically developing males and females ages 9 to 24 years to identify correlates of general intelligence (g) scores. To determine if these correlates also mediate associations of specific cognitive abilities with cortical thickness, we regressed specific cognitive test scores on g scores and analyzed the residuals with respect to cortical thickness. The effect of age on the association between cortical thickness and intelligence was examined. We found a widely distributed pattern of positive associations between cortical thickness and g scores, as derived from the first unrotated principal factor of a factor analysis of Wechsler Abbreviated Scale of Intelligence (WASI) subtest scores. After WASI specific cognitive subtest scores were regressed on g factor scores, the residual score variances did not correlate significantly with cortical thickness in the full sample with age covaried. When participants were grouped at the age median, significant positive associations of cortical thickness were obtained in the older group for g-residualized scores on Block Design (a measure of visual-motor integrative processing) while significant negative associations of cortical thickness were observed in the younger group for g-residualized Vocabulary scores. These results regarding correlates of general intelligence are concordant with the existing literature, while the findings from younger versus older subgroups have implications for future research on brain structural correlates of specific cognitive abilities, as well as the cognitive domain specificity of behavioral performance correlates of normative gray matter thinning during adolescence.     

An Eastern Orthodox Theological Basis for Interplanetary Environmental Ethics

As a result of our technological advances in space exploration, human enterprise is no longer limited to the confines of planet Earth. Although several philosophical approaches to environmental ethics have already been advocated for human encounters with other planets such as Mars, it may be argued that various religious worldviews will significantly influence these suggested value systems. In this article, we present an Eastern Orthodox Christian interpretation of Creation and explore the theological meaning of the human vocation as Priests of Creation. An appropriate application of these two principles provides a theological basis for an interplanetary eco-praxis.     

Perceptual constraints on implicit learning of spatial context

If perspective views of an object in two orientations are displayed in alternation, observers will experience the object rotating back and forth in three-dimensional space. Rotational motion is perceived even though only two views are displayed and each view is two-dimensional. The results of 5 experiments converge on the conclusion that the perception of apparent rotational motion produces representations in visual memory corresponding to the spatial structure of the object along its arc of rotation. These representations are view-dependent, preserving information about spatial structure from particular perspectives, but do not preserve low-level perceptual details of the stimulus.     

Talking about Homosexuality: The Views of Mainline Protestant Clergy

Homosexuality is one of the most divisive issues within mainline Protestantism today. In this article we portray the many sides of mainline Protestantism's debates about homosexuality through the lens of statements clergy made about the issue in early 2000. In interviews with 62 mainline Protestant clergy across the United States, 40 volunteered their views on homosexuality without being prompted. We describe the frames through which clergy understand and articulate issues related to homosexuality in the midst of contentious denominational debate about the subject. The majority of clergy who discussed homosexuality focused on the issue in their churches instead of in society at large, and in their denominations rather than in their own congregations. Moreover, virtually none of the clergy interviewed took hard and fast stands on the issue of homosexuality. Most approach the issue in a pragmatic, rather than prophetic, way. Our interviews also show that pastors who choose to speak on homosexuality tend to frame the issue in terms of the diffuse notion of "homosexuality," rather than talking about gay men and lesbians as people.     

COMPOSITION AND COINCIDENCE

Many philosophers say that the same atoms may compose at once a statue and a lump of matter that could outlive the statue. I reject this because no difference between the statue and the lump could explain why they have different persistence conditions. But if we say that the lump is the statue, it is difficult to see how there could be any human beings. I argue that this and analogous problems about material objects admit only of solutions that at least appear to be radically at odds with our ordinary thinking.     

Narrative and persistence

Many philosophers say that the nature of personal identity has to do with narratives: the stories we tell about ourselves. While different narrativists address different questions of personal identity, some propose narrativist accounts of personal identity over time. The paper argues that such accounts have troubling consequences about the beginning and end of our lives, lead to inconsistencies, and involve backwards causation. The problems can be solved, but only by modifying the accounts in ways that deprive them of their appeal.     

Finding Motivation to Learn: Exploring Achievement Goals in California Community College CalWORKs Students

This study investigated the achievement goals and motivations of California Community College CalWORKs students in an effort to better support student success and persistence. This study was guided by three research questions: (1) What type of achievement goals do CalWORKs students enter with? (2) What are their rationales for these types of achievement goals? (3) How malleable are these achievement goals? Interviews with 48 participants focused on better understanding the relationship between achievement goal type and motivation changes while in college. Findings indicate that CalWORKs students enter college with a range of goal types, but formany changes in goal type led to more intrinsic motivation and ultimately persistence toward graduation and career goals. Findings from this study also reveal thatexperiences highlighting students' ability to be competent as learners while balancing other roles helped catalyze change in achievement goal type and/or rationale. The results of this study emphasize that CalWORKs students' achievement goals are malleable, and particular college experiences can facilitate students' movement toward more academically focused goals. More specifically, placing more focus on additional student support programs that can foster peer networking, faculty interactions, and additional career exploration opportunities can lead to change in academic persistence.     

‘If I only had a little humility,I would be perfect’: Children’s and adults’ perceptions of intellectually arrogant,humble, and diffident people

Abstract

Intellectual humility is usually regarded as a virtue. In this paper, we conceptualized intellectual humility along two dimensions: (1) placing an adequate level of confidence in one’s own beliefs; (2) being willing to consider other people’s beliefs. We tested whether children (ages 4 to 11 years) and adults perceived intellectual humility as positive and how these perceptions changed across development. To do so, we asked participants to evaluate an intellectually humble person as compared to an intellectually arrogant person, who readily dismissed other people’s beliefs, or to an intellectually diffident person, who was unsure of a well-supported belief. Young children did not favor the intellectually humble person over the others, but older children and adults liked this person better and tended to consider her nicer than the arrogant one and smarter than the diffident one. These findings suggest that the virtuousness of intellectual humility in others is recognized from mid-childhood on.