Disclosure of HIV-Positive Status to Latino Gay Men's Social Networks

This study explored disclosure of serostatus in a sample of 155 HIV-positive Latino gay men from New York City and Washington, DC. We examined rates of disclosure to different members of the social network: mothers, fathers, close friends, and primary sexual partners. There were high rates of disclosure of HIV-positive serostatus to main partners and closest friends and lower rates to fathers and mothers. We examined the role of 3 contextual target-dependent factors (emotional closeness to target, anticipated reactions from target, and target's knowledge of sexual orientation), as well as acculturation and time since diagnosis. Three separate logistic regression models were performed to predict disclosure of HIV-positive status to 3 targets: mothers, fathers, and closest friends. We found that disclosure was not a generalized tendency, but rather different factors were influential depending on the target. Whether the target was aware of participant's sexual orientation was associated with disclosure in all 3 models. Greater emotional closeness also predicted disclosure to mother and father; greater U.S. acculturation was associated with disclosure to father and marginally to mother. A longer time since diagnosis was associated with disclosure to the closest friend. These findings highlight the importance of taking into account roles and relationships, and their effect on disclosure.     

Universal sex differences in the desire for sexual variety: tests from 52 nations, 6 continents,and 13 islands

Evolutionary psychologists have hypothesized that men and women possess both long-term and short-term mating strategies, with men's short-term strategy differentially rooted in the desire for sexual variety. In this article, findings from a cross-cultural survey of 16,288 people across 10 major world regions (including North America, South America, Western Europe, Eastern Europe, Southern Europe, Middle East, Africa, Oceania, South/Southeast Asia, and East Asia) demonstrate that sex differences in the desire for sexual variety are culturally universal throughout these world regions. Sex differences were evident regardless of whether mean, median, distributional, or categorical indexes of sexual differentiation were evaluated. Sex differences were evident regardless of the measures used to evaluate them. Among contemporary theories of human mating, pluralistic approaches that hypothesize sex differences in the evolved design of short-term mating provide the most compelling account of these robust empirical findings.     

Linguistic prejudice and electoral discrimination: What can political theory learn from sociolinguistics?

Normative political theorists working in the field of linguistic justice generally believe that participation in democratic life in linguistically diverse societies requires a shared lingua franca (e.g., Patten 2009; Van Parijs 2011). Even when a shared lingua franca is present, however, there is likely to be a variety of ways in which people speak it, due to variations in accent, pitch, register, and lexicon. This paper examines the implications of intra-linguistic diversity for democracy and political representation. More specifically, by drawing on Andrew Rehfeld's (2010) work and on relevant sociolinguistics research, the paper argues that widespread unconscious linguistic prejudice constitutes a constraint on some citizens' right to run for political office that is incompatible with democratic equality. The argument is illustrated via a number of examples concerning Australian politicians.     

Formal Ontology and Mathematics. A Case Study on the Identity of Proofs

We propose a novel, ontological approach to studying mathematical propositions and proofs. By “ontological approach” we refer to the study of the categories of beings or concepts that, in their practice, mathematicians isolate as fruitful for the advancement of their scientific activity (like discovering and proving theorems, formulating conjectures, and providing explanations). We do so by developing what we call a “formal ontology” of proofs using semantic modeling tools (like RDF and OWL) developed by the computer science community. In this article, (i) we describe this new approach and, (ii) to provide an example, we apply it to the problem of the identity of proofs. We also describe open issues and further applications of this approach (for example, the study of purity of methods). We lay some foundations to investigate rigorously and at large scale intellectual moves and attitudes that underpin the advancement of mathematics through cognitive means (carving out investigationally valuable concepts and techniques) and social means (like communication, collaboration, revision, and criticism of specific categories, inferential patterns, and levels of analysis). Our approach complements other types of analysis of proofs such as reconstruction in a deductive system and examination through a proof-assistant.

     

Racial identity and self-esteem among black Brazilian men: race matters in Brazil too!

The contribution of J. E. Helms's (1990) people of color racial identity model to the collective and individual self-esteem of Black Brazilian men (N = 203) was explored. The relationships between racial identity attitudes and other racial constructs such as skin color, racial group self-designation, and racial mistrust were also examined. Hierarchical regression analyses revealed that the set of racial identity attitudes (conformity, dissonance, resistance, and internalization) was significant in predicting self-esteem (collective and individual). Results from a multivariate analysis of variance showed an effect for skin color on racial attitudes. In addition, racial identity was significantly related to mistrust of Whites by Black Brazilian men. The implications of these findings are discussed in the context of racial relations in Brazil.     

Interpreting references to group membership in context: feelings about intergroup contact depending on who says what to whom

Contact research often manipulates the salience of group membership, with little consideration of how such manipulations affect feelings toward intergroup contact, and how contextual features may moderate its effects. We propose that feelings toward intergroup contact may not depend solely on the degree to which group membership appears to be salient, but on how references to group membership are interpreted in the intergroup context. Two experimental studies examined how references to group membership may be interpreted differently depending on their source (ingroup or outgroup) and the recipient (minority or majority), and how these interpretations predict feelings toward cross‐group interactions. In Study 1, references to group membership were interpreted more negatively from an outgroup source among majority participants, yet a reverse pattern was observed for minority participants. Similar effects were obtained in Study 2, yet participants tended to respond negatively when an outgroup member referred specifically to their group. Moreover, feelings about cross‐group interactions were predicted only (Study 1) and strongly (Study 2) by the degree to which outgroup members' references were interpreted negatively, beyond what was predicted by participants' general awareness of group membership. Implications of these findings for future research on contact and salience are discussed. Copyright © 2006 John Wiley & Sons, Ltd.     

Effects of decision-phase time constraints on emotion-based learning in the Iowa Gambling Task

Research employing the Iowa Gambling Task (IGT) has frequently shown that learning is impaired in various clinical populations. However, precisely what constitutes "unimpaired" control group learning remains unclear. In order to understand some of the possible factors underlying variability in control group IGT performance, the present study sought to manipulate features of the task to intentionally disrupt learning. Specifically, the present study investigated the effects of time constraints on emotion-based learning during automated administration of the IGT. For two groups of participants, a time-constraint of either 2-s or 4-s was implemented during the critical decision making period, while a control group received no time constraint. We also evaluated participants' subjective experience after every block of 20 trials. Results demonstrated that the 2-s group differed significantly from the control group. Subjective experience measures revealed rapid development of awareness of the advantageous and disadvantageous decks among all three groups. Overall, our findings demonstrate, for the first time, the effects of decision-phase time constraints on emotion-based learning and indicate that the IGT reward/punishment schedules are to some extent cognitively penetrable.     

Doing the opposite to what another person is doing

The three studies presented here aim to contribute to a better understanding of the role of the coordinate system of a person's body and of the environment in spatial organization underlying the recognition and production of gestures. The paper introduces a new approach by investigating what people consider to be opposite gestures in addition to identical gestures.     

Societal and Ethical Implications of Anti-Spoofing Technologies in Biometrics

Biometric identification is thought to be less vulnerable to fraud and forgery than are traditional forms of identification. However biometric identification is not without vulnerabilities. In a ‘spoofing attack’ an artificial replica of an individual’s biometric trait is used to induce a system to falsely infer that individual’s presence. Techniques such as liveness-detection and multi-modality, as well as the development of new and emerging modalities, are intended to secure biometric identification systems against such threats. Unlike biometrics in general, the societal and ethical issues raised by spoofing and anti-spoofing techniques have not received much attention. This paper examines these issues.     

The assessment of subjective visual vertical: comparison of two psychophysical paradigms and age-related performance

Perception of the subjective visual vertical (SVV) is usually assessed by asking to subjects, in complete darkness, to adjust the position of a luminous rod that is variably tilted (i.e., by the method of adjustment [ADJ]). Conversely, the two-alternative forced choice (2AFC) method requires subjects to categorize, as tilted either clockwise (CW) or counterclockwise (CCW), stimuli that are presented on a computer screen and are variably tilted from vertical. In this study, we aimed to compare the results of these two methods and investigate age-related effects on the SVV. SVV was assessed in 102 healthy individuals, 50 women and 52 men, with a mean age of 45.7 (range 20–91), using both ADJ (ten trials, initial 1°, 2°, 4°, 8°, or 12° bar tilts both CW and CCW) and 2AFC (120 stimuli with a 1°–32° variable tilt). Also, 50 of the subjects performed the ADJ test twice, with different bar lengths. We estimated bias and threshold for the two methods, and found that neither measure differed across the methods. Age was a significant predictor of threshold (2AFC, R ² = .141; ADJ, R ² = .190; p < .001), implying lower sensitivity with increasing age. Moreover, the ADJ method showed a significant increase of bias when the initial tilt was farthest from vertical, whereas the rod length was irrelevant. SVV measures obtained with the ADJ and 2AFC methods were comparable, but the latter measures were more resistant to artifacts that might affect the measurement. The lower sensitivity found in older persons may have an influence on their ability to interact with the environment and may contribute to impairment of postural control.