What are you looking at? Infants’ neural processing of an adult's object‐directed eye gaze

Previous research suggests that by 4 months of age infants use the eye gaze of adults to guide their attention and facilitate processing of environmental information. Here we address the question of how infants process the relation between another person and an external object. We applied an ERP paradigm to investigate the neural processes underlying the perception of the direction of an adult's eye gaze in 4-month-old infants. Infants showed differential processing of an adult's eye gaze, which was directed at a simultaneously presented object compared to non-object-directed eye gaze. This distinction was evident in two ERP components: The Negative component, reflecting attentional processes, and the positive slow wave, which is involved in memory encoding. The implications of these findings for the development of joint attention and related social cognitive functions are discussed.     

On Ignorance and Contradiction Considered as Truth-Values

A critical view of the alleged significance of Belnap four-valuedlogic for reasoning under inconsistent and incomplete informationis provided. The difficulty lies in the confusion between truth-valuesand information states, when reasoning about Boolean propositions.So our critique is along the lines of previous debates on therelevance of many-valued logics and especially of the extensionof the Boolean truth-tables to more than two values as a toolfor reasoning about uncertainty. The critique also questionsthe significance of partial logic. Received for publication 8 November 2007.     

L'acceptation des nouvelles technologies d'information : le cas des systèmes d'information en milieu bancaire

Our article analyses the conditions and the factors of acceptance of technologies intended for a particular professional environment: the banking advisers customers. It is in particular a question of locating the evolutions, the contributions, the changes, as well as the emergence of new uses generated by the tools data processing and mobilized in the presence of the customers. The objective is to be able to include/understand the methods of appropriation by the actors and the organizations. The principal results show that technology can be an opportunity for the ones and a constraint for the others, invalidating the thesis of a technological determinism. The acceptability of technology depends at the same time on the experiments, competences and the resources of the individuals as well as stakes and strategies, which the latter project on these devices.     

The smell of cooperativeness: Do human body odours advertise cooperative behaviours?

Several physical features influence the perception of how cooperative a potential partner is. While previous work focused on face and voice, it remains unknown whether body odours influence judgements of cooperativeness and if odour-based judgements are accurate. Here, we first collected axillary odours of cooperative and uncooperative male donors through a public good game and used them as olfactory stimuli in a series of tasks examining whether and how they influence cooperative decision-making in an incentivized economic game and ratings of cooperativeness. Our results show that having access to the donor's body odours provided a strategic advantage to women during economic decisions (but not to men): with age, women were more likely to cooperate with cooperative men and to avoid interacting with uncooperative men. Ratings of cooperativeness were nonetheless unrelated to the donors’ actual cooperativeness. Finally, while men with masculine and intense body odours were judged less cooperative, we found no evidence that donors’ actual cooperativeness was associated with less masculine or less intense body odour. Overall, our findings suggest that, as faces and voices, body odours influence perceived cooperativeness and might be used accurately and in a non-aware manner as olfactory cues of cooperativeness, at least by women.     

Sensitivity to triadic attention between 6 weeks and 3 months of age

In Study 1, 6-week- and 3-month-old infants gazed more to an adult when she alternated attention between an object and the infant versus when attention was directed only to the object. In Study 2, 6-week-olds did not discriminate between triadic situations with face-to-face interaction controlled.     

The frequency, nature, and effects of naturally occurring appearance-focused social comparisons

This research examined the effects of naturally occurring appearance-focused social comparisons on women's affect, body satisfaction, and weight-related cognitions. During their daily activities, women reporting body dissatisfaction (n=53) and women reporting body satisfaction (n=34) recorded their reactions to comparison information. Body-dissatisfied women engaged in more comparisons and a greater proportion of upward comparisons than body-satisfied women. Upward comparisons were associated with an increase in negative affect, body dissatisfaction, and thoughts of exercising for both groups; however, body-dissatisfied women experienced a greater increase in thoughts of dieting following upward comparisons. The daily effects of comparison information on body-dissatisfied women were examined; upward comparisons were associated with increases in daily negative affect, body dissatisfaction, and weight-related cognitions.     

Reducing attention‐maintained behavior through the use of positive punishment,differential reinforcement of low rates,and response marking

A differential reinforcement of low (DRL) rates procedure was implemented as a changing criterion design with positive punishment and response marking to reduce attention‐maintained behavior of screaming, profanity, and disruptive behaviors of three adolescent males. One participant was diagnosed with static encephalopathy and attention deficit hyperactivity disorder (ADHD) and severe mental retardation, the other two were diagnosed with Down syndrome, one with moderate mental retardation, and the other with severe mental retardation. Through response marking, a verbal warning was delivered immediately following the initial occurrence of a target behavior. A special token (positive punishment) was immediately delivered with a verbal cue and placed on a behavior board following the next occurrence of that behavior. Appropriate requests (hand‐raising) for attention was acknowledged and reinforced with verbal praise. The DRL procedure, combined with positive punishment and response marking, was successful in decreasing the frequency of targeted behaviors amongst all participants. Copyright © 2009 John Wiley & Sons, Ltd.     

Structural Solutions to Social Dilemmas: A Field Study on Commuters’ Willingness to Fund Improvements in Public Transit1

The present field study examined commuters’(N= 152) willingness to fund improvements in public transit. Consistent with Samuelson's (1993; Samuelson & Messick, 1995) multiattribute evaluation model of structural change in social dilemmas, support for the transit plan was higher when it was perceived to be (a) effective at reducing congestion and pollution, (b) personally beneficial, and (c) fair in terms of taxes and benefits. Also consistent with predictions, these relationships were moderated by individual differences in social value orientation (MClintock, 1968) and the consideration of future consequences (CFC; Strathman, Gleicher, Boninger, & Edwards, 1994). Prosocials responded more to the perceived fairness of the plan, while proselfs responded more to the plan's effectiveness in reducing congestion. Low CFCs responded more to the plan's personal benefits and effectiveness in reducing congestion, while high CFCs responded more to the plan's effectiveness in reducing pollution.