Asymmetry and performance: toward a neurodevelopmental theory

Hemispheric asymmetry implies the existence of developmental influences that affect one hemisphere more than the other. However, those influences are poorly understood. One simple view is that asymmetry may exist because of a relationship between a mental process' degree of lateralization and how well it functions. Data scaling issues have largely prevented such investigations, but it is shown that scaling effects are minimized after correction for ceiling and floor effects. After correction, lateralization-performance correlations are pervasive. However, while some correlations are positive, others are negative, with the direction depending on the underlying lateralized process. Two hypotheses are proposed that can account for these relationships by pointing either to individual differences in maturation of the corpus callosum or to developmental limits encountered at different ages of childhood. Their investigation should contribute toward a neurodevelopmental theory of hemispheric asymmetry.     

On the development of color naming in young children: data and theory

Among the semantics of different common attributes of the environment, consistent and correct color naming seems to develop paradoxically late in children, for even young infants discriminate and categorize colors well, color is a salient feature of the child's world, and children are aware of color as a separate domain, know color terms, and respond to color questions with color names. Several specific anomalies characterize early linguistic development in this domain: Errors in beginning color naming are perseverative or random, there seems to be a minimum age for correct and consistent color naming, developmental rate shows wide individual differences, and acquisition among girls is generally faster than among boys. This essay reviews data that support these observations, and evaluates three traditional explanations for them--including the perceptual salience of color for children, experience and learning in the child, and cognitive development--against a fourth new possibility. It is hypothesized that appropriate color naming may depend on the maturation and integration of specific cortical neurological structures; among several interpretations, the neurological one accounts best for diverse characteristics of early color naming.     

Reading Susan Isaacs: toward a radically revised theory of thinking

The author views Isaacs's (1952) paper, The nature and function of phantasy, as making an important contribution to the development of a radically revised psychoanalytic theory of thinking. Perhaps Isaacs's most important contribution is the notion that phantasy is the process that creates meaning, and that phantasy is the form in which all meanings - including feelings, defense 'mechanisms,' impulses, bodily experiences, and so on - exist in unconscious mental life. The author discusses both explicit formulations offered by Isaacs as well as his own extensions of her ideas. The latter include (1) the idea that phantasying generates not only unconscious psychic content, but also constitutes the entirety of unconscious thinking; (2) the notion that transference is a form of phantasying that serves as a way of thinking for the first time (in relation to the analyst) emotional events that occurred in the past, but were too disturbing to be experienced at the time they occurred and (3) a principal aim and function of phantasy is that of fulfilling the human need to get to know and understand the truth of one's experience. The author concludes by discussing the relationship between Isaacs's concept of phantasy and Bion's concepts of alpha function and the human need for the truth, as well as the differences between Fairbairn's and Isaacs's conceptions of the nature of unconscious internal object relationships.     

Making good choices: toward a theory of well-being in medicine

The principle of beneficence directs healthcare practitioners to promote patients’ well-being, ensuring that the patients’ best interests guide treatment decisions. Because there are a number of distinct theories of well-being that could lead to different conclusions about the patient’s good, a careful consideration of which account is best suited for use in the medical context is needed. While there has been some discussion of the differences between subjective and objective theories of well-being within the bioethics literature, less attention has been given to the questions of what work a theory of well-being needs to do in bioethics and which standards of success ought to be used in selecting a theory of well-being for use in medicine. In this article, I argue that traditional theories of well-being developed in philosophy are not well suited to meet the needs of the medical context. For the principle of beneficence to be most useful, the underlying account of well-being should satisfy two conditions: first, it needs to lead to a concrete, action-guiding determination of the patient’s good; and, second, any recommendations it offers need to be justifiable to patients. Standard accounts of well-being have difficulty satisfying both conditions. Exploring the limitations of these theories when applied to treatment dilemmas helps point the way toward the development of an account of well-being better suited to healthcare.     

Color measurement and color theory: II. Opponent-colors theory

Quantitative opponent-colors theory is based on cancellation of redness by admixture of a standard green, of greenness by admixture of a standard red, of yellowness by blue, and of blueness by yellow. The fundamental data are therefore the equilibrium colors: the set A₁ of lights that are in red/green equilibrium and the set A₂ of lights that are in yellow/blue equilibrium. The result that a cancellation function is linearly related to the color-matching functions can be proved from more basic axioms, particularly, the closure of the set of equilibrium colors under linear operations. Measurement analysis treats this as a representation theorem, in which the closure properties are axioms and in which the colorimetric homomorphism has the cancellation functions as two of its coordinates.Consideration of equivalence relations based on opponent cancellation leads to a further step: analysis of equivalence relations based on direct matching of hue attributes. For additive whiteness matching, this yields a simple extension of the representation theorem, in which the third coordinate is luminance. For other attributes, precise representation theorems must await a better qualitative characterization of various nonlinear phenomena, especially the veiling of one hue attribute by another and the various hue shifts.     

The role of spatial organization in preference for color pairs

We investigated how spatial organization influences color-pair preference asymmetries: differential preference for one color pair over another when the pairs contain the same colors in opposite spatial configurations. Schloss and Palmer (2011, Attention, Perception, & Psychophysics 73 55-571) found weak figure ground preference asymmetries for small squares centered on large squares in aesthetic ratings. Here, we found robust preference asymmetries using a more sensitive forced-choice task: participants strongly prefer pairs with yellower, lighter figures on bluer, darker grounds (experiment 1). We also investigated which spatial factors influence these preference asymmetries. Relative area of the two component regions is clearly important, and perceived 3-D area of the 2-D displays (ie after the ground is amodally completed behind the figure) is more influential than 2-D area (experiment 2). Surroundedness is not required, because yellowness blueness effects were comparable for pairs in which the figure was surrounded by the ground, and for mosaic arrangements in which the regions were adjacent and separated by a gap (experiment 3). Lightness darkness effects, however, were opposite for figure ground versus mosaic organizations: people prefer figure-ground organizations in which smaller regions are lighter, but prefer mosaic organizations in which smaller regions are darker. Physiological, phenomenological, and ecological explanations of the reported results are discussed.     

Don't judge a living book by its cover: effectiveness of the living library intervention in reducing prejudice toward Roma and LGBT people

In Hungary, prejudices toward Roma and the LGBT community are highly salient and explicit in public opinion, the media, and in the political discourse. The present study examined the effectiveness of the Living Library prejudice reduction intervention—in which participants as “Readers” have engaging contact with living “Books” who are trained volunteers from the Roma and LGBT communities. In a pre‐post intervention study with high school students (N = 105), results suggest that the Living Library intervention reduced participants’ scores on multiple measures of prejudice. The Living Library intervention appeared to be effective among both those participants whose friends endorsed prejudice or more tolerant attitudes toward Roma and LGBT people. In sum, Living Library appears to be a useful method for reducing prejudice in contexts which are characterized by strong negative attitudes toward these different groups.     

The bored mind is a guiding mind: toward a regulatory theory of boredom

By presenting and synthesizing findings on the character of boredom, the article advances a theoretical account of the function of the state of boredom. The article argues that the state of boredom should be understood as a functional emotion that is both informative and regulatory of one's behavior. Boredom informs one of the presence of an unsatisfactory situation and, at the same time, it motivates one to pursue a new goal when the current goal ceases to be satisfactory, attractive or meaningful. Boredom ultimately promotes both movement and the restoration of the perception that one's activities are meaningful and congruent with one's overall projects.     

Grouping and emergent features in vision: toward a theory of basic Gestalts

Gestalt phenomena are often so powerful that mere demonstrations can confirm their existence, but Gestalts have proven hard to define and measure. Here we outline a theory of basic Gestalts (TBG) that defines Gestalts as emergent features (EFs). The logic relies on discovering wholes that are more discriminable than are the parts from which they are built. These wholes contain EFs that can act as basic features in human vision. As context is added to a visual stimulus, a hierarchy of EFs appears. Starting with a single dot and adding a second yields the first two potential EFs: the proximity (distance) and orientation (angle) between the two dots. A third dot introduces two more potential EFs: symmetry and linearity; a fourth dot produces surroundedness. This hierarchy may extend to collinearity, parallelism, closure, and more. We use the magnitude of Configural Superiority Effects to measure the salience of EFs on a common scale, potentially letting us compare the strengths of various grouping principles. TBG appears promising, with our initial experiments establishing and quantifying at least three basic EFs in human vision.