The Impact of Face Skin Tone vs. Face Symmetry on Perceived Facial Attractiveness

The purpose of this study was to assess and compare the relative contribution of skin tone and symmetry on judgment of attractiveness regarding female faces. Two hundred and fifteen Mozambican adults were presented with a set of faces, and instructed to rate their degree of attractiveness along a continuous scale. Chi-square, factorial weight analyses and ANOVA were used to analyze the data. Face skin tone had a significant impact on the participants' attractiveness judgment of target faces. However, the target face skin tone contribution to the participants' attractiveness judgment (5% of the total variance) was much weaker than the contribution of the target face symmetry (85% of the total variance). These results imply that skin bleaching, common among Black people across sub-Saharan African countries, is not only dangerous to the health of those who practice it, but it is unlikely to make them appear much more attractive.     

Serial reversal learning in freshwater stingrays (Potamotrygon motoro)

Animal Cognition - Serial reversal learning is considered a reliable approach for the testing of behavioral flexibility, and animals that inhabit fluctuating habitats and different environments are...     

Human and Global Identities: Different Prototypical Meanings of All-Inclusive Identities

The impact of identities encompassing all human beings (e.g., human and/or global identities) on intergroup relations is complex, with studies showing mostly positive (e.g., less dehumanization), but also negative (e.g., deflected responsibility for harm behavior), effects. However, different labels and measures have been used to examine the effects of these all-inclusive superordinate identities, without a systematic empirical examination of the extent to which they overlap or differ in their sociopsychological prototypical content. This study examined whether different labels activate the same contents in laypeople's conceptualization. Two hundred and forty-eight participants openly described one of six labels: “All humans everywhere”; “People all over the world”; “People from different countries around the world”; “Global citizens”; “Citizens of the world”; and “Members of world community.” Results from quantitative content analyses showed that the different labels activated different thematic attributes, representing differences in their core prototypical meaning. We propose that a general distinction should be made between labels that define membership based on human attributes (e.g., biological attributes) and those that evoke attributes characteristic of membership in a global political community (e.g., attitudinal attributes), as their effect on intergroup relations may vary accordingly.     

The Impact of Stimuli Color in Lexical Decision and Semantic Word Categorization Tasks

In two experiments, we examined the impact of color on cognitive performance by asking participants to categorize stimuli presented in three different colors: red, green, and gray (baseline). Participants were either asked to categorize the meaning of words as related to the concepts of “go” or “stop” (Experiment 1) or to indicate if a neutral verbal stimulus was a word or not (lexical decision task, Experiment 2). Overall, we observed performance facilitation in response to go stimuli presented in green (vs. red or gray) and performance inhibition in response to go stimuli presented in red. The opposite pattern was observed for stop‐related stimuli. Importantly, results also indicated that color might also be used to categorize neutral stimuli. Overall, these findings provide support to the green‐go and red‐stop color associations and test the potential functional autonomy acquired by these colors and the boundary conditions to their effects on stimuli categorization.     

Supervenience of Extrinsic Properties

The aim of this paper is to define a notion of supervenience which can adequately describe the systematic dependence of extrinsic as well as of intrinsic higher-level properties on base-level features. We argue that none of the standard notions of supervenience—the concepts of weak, strong and global supervenience—fulfil this function. The concept of regional supervenience, which is purported to improve on the standard conceptions, turns out to be problematic as well. As a new approach, we develop the notion of property-dependent supervenience. This notion is founded on a criterion of relevance adapting the supervenience base to the considered higher-level properties in a specific way, such that only features which are relevant to the instantiation of the higher-level properties under consideration are taken into account.