Stereotypic horses (Equus caballus) are not cognitively impaired

Animal Cognition - Stereotypies in animals are thought to arise from an interaction between genetic predisposition and sub-optimal housing conditions. In domestic horses, a well-studied...     

Lived Body vs Gender: Reflections on Social Structure and Subjectivity

Toril Moi has argued that recent deconstructive challenges to the concept of gender and to the viability of the sex/gender distinction have brought feminist and queer theory to a place of increasing theoretical abstraction. She suggests that we should abandon the category of gender once and for all, because it is founded on a nature–culture distinction and it tends incorrigibly to essentialize women's lives. Moi argues that feminist and queer theories should replace the concept of gender with a concept of the lived body derived from existential phenomenology. In this essay I take up and develop this suggestion, and argue that there are several advantages that a category of the lived body has over a category of gender for feminist and queer theories: (1) no nature–culture distinction is necessary but the body can be described as historically and socially specific; (2) it is not necessary to break out a gendered and "raced" part of identity with this category; (3) differences of sexual desire can be described without recourse to an "inner core" of identity or "sexual orientation." I go on to argue, however, that it is important to retain a concept of gender for a theoretical purpose beyond that which Moi and those she criticizes conceive. In recent years feminist and queer theories have tended to conceive their theorizing as restricted to identity and subjectivity. How large scale social structures differentially position people in relations of privilege and disadvantage has been ignored, relatively. This essay argues then that theorizing structural processes and inequalities is crucial, and that a concept of gender is important for such theorizing. I propose three aspects of gendered social structure that are irreducible to one another: (1) a sexual division of labor (2) normative heterosexuality, and (3) hierarchies of power. In each case I illustrate the social theoretical work these categorizations of gendered structure can and should do.     

Does a theory of language need a grammar? Evidence from Hebrew root structure

Hebrew constrains the occurrence of identical consonants in its roots: Identical consonants are acceptable root finally (e.g., skk), but not root initially (e.g., kks). Speakers' ability to freely generalize this constraint to novel phonemes (Berent, Marcus, Shimron, & Gafos, 2002) suggests that they represent segment identity-a relation among mental variables. An alternative account attributes the restriction on identical phonemes to their feature similarity, captured by either the number of shared features or their statistical frequency. The similarity account predicts that roots with partially similar consonants (e.g., sgk) should be at least as acceptable as roots with fully identical consonants (e.g., skk), and each of these roots should be less acceptable than dissimilar controls (e.g., gdn). Contrary to these predictions, three lexical decision experiments demonstrate that full identity is more acceptable than partial similarity and (in some cases) controls. Speakers' sensitivity to consonant identity suggests that linguistic competence, in general, and phonology, in particular, encompass a computational mechanism that operates over variables. This conclusion is consistent with linguistic accounts that postulate a symbolic grammatical component that is irreducible to the statistical properties of the lexicon.     

Convex hull and tour crossings in the Euclidean traveling salesperson problem: Implications for human performance studies

Recently there has been growing interest among psychologists in human performance on the Euclidean traveling salesperson problem (E-TSP). A debate has been initiated on what strategy people use in solving visually presented E-TSP instances. The most prominent hypothesis is the convex-hull hypothesis, originally proposed by MacGregor and Ormerod (1996). We argue that, in the literature so far, there is no evidence for this hypothesis. Alternatively we propose and motivate the hypothesis that people aim at avoiding crossings.     

Bad but bold: Ambivalent attitudes toward men predict gender inequality in 16 nations

A 16-nation study involving 8,360 participants revealed that hostile and benevolent attitudes toward men, assessed by the Ambivalence Toward Men Inventory (P. Click & S.T. Fiske, 1999), were (a) reliably measured across cultures, (b) positively correlated (for men and women, within samples and across nations) with each other and with hostile and benevolent sexism toward women (Ambivalent Sexism Inventory, P. Click & S.T. Fiske, 1996), and (c) negatively correlated with gender equality in cross-national comparisons. Stereotype measures indicated that men were viewed as having less positively valenced but more powerful traits than women. The authors argue that hostile as well as benevolent attitudes toward men reflect and support gender inequality by characterizing men as being designed for dominance.     

Effects of Trait Self‐Control on Response Conflict About Healthy and Unhealthy Food

Self‐control leads to positive life outcomes, but it is poorly understood. While previous research has focused on self‐control failure, self‐control success remains unexplored. The current studies aim to shed more light on the mechanisms of self‐control by focusing on the resolution of response conflict as a key component in self‐control success. Trait self‐control was measured, and participants reported on the magnitude of response conflict they experienced about healthy and unhealthy foods in Study 1 (N = 146; M_age = 33.03; 59 females, 83 males, 4 unknown). The response conflict process was assessed in Study 2 (N = 118; M_age = 21.45; 68 females, 41 males, 9 unknown). Outcomes showed that self‐reported evaluative response conflict about food items was smaller for people high in trait self‐control. Study 2 revealed that higher trait self‐control predicted faster resolution of self‐control conflict, and an earlier peak of the response conflict. Taken together, these results provide insight into what makes people with high trait self‐control successful, namely, how they handle response conflict. Implications for self‐control theories and future directions are discussed.     

Is disgust sensitive to classical conditioning as indexed by facial electromyography and behavioural responses?

Earlier studies provided preliminary support for the role of classical conditioning as a pathway of disgust learning, yet this evidence has been limited to self-report. This study included facial electromyographical (EMG) measurements (corrugator and levator muscles) and a behavioural approach task to assess participants’ motivation-to-eat the actual food items (conditioned stimuli, CS). Food items served as CS and film excerpts of a woman vomiting served as unconditioned stimuli (US). Following acquisition the CS+ (neutral CS paired with US disgust) was rated as more disgusting and less positive. Notably, the conditioned response was transferred to the actual food items as evidenced by participants’ reported lowered willingness-to-eat. Participants also showed heightened EMG activity in response to the CS+ which seemed driven by the corrugator indexing a global negative affect. These findings suggest that classical conditioning as a pathway of disgust learning can be reliably observed in subjective but not in disgust-specific physiological responding.