EARLY CORTICAL INFLUENCES IN OBJECT SEGREGATION AND THE PERCEPTION OF SURFACE LIGHTNESS

Abstract— The apparent brightness of a surface is profoundly influenced by the brightness of an adjacent surface., but these contrast effects are reduced when the surface are perceived as separate three-dimensional entities. Previous work has suggested that high-level perceptual and cognitive processes involved in scence segmentation may be responsible for modifying a surface's appearance. We demonstrate large reductions in contrast effects when the sues available for segmentations are restricted to those that isolate separate groups of early cortical neurons in the visual system. Our data contradict standard contract-signaling models of brightness perception and imply that mechanisms of figure-ground segmentation are already available at low levels of visual processing.     

Beyond the individual: the impact of ethnic context and classroom behavioral norms on victims' adjustment

With a sample of 1,630 sixth-grade students from 77 classrooms, the authors used hierarchical linear modeling to examine how ethnicity within context and classroom social disorder influenced the association between peer victimization and social-psychological adjustment (loneliness and social anxiety). Victimized students in classrooms where many classmates shared their ethnicity reported feeling the most loneliness and social anxiety. Additionally, classroom-level social disorder served as a moderator such that the association between victimization and anxiety was stronger in classrooms with low social disorder. Both findings were interpreted as evidence that problem behavior deviating from what is perceived as normative in a particular context heightens maladjustment. The authors discuss implications for studying ethnicity and classroom behavioral norms as context variables in peer relations.     

Binding,narcissistic pathology and the psychoanalytic process

This article discusses the question of truth claims in psychoanalysis, revolving around the concepts “construction”, “reconstruction”, “historical truth” and “narrative truth”. In Part I of the article, these concepts are discussed in an historical context, in particular, Freud's view, the narrative tradition and some of Bion's ideas. In Part II, an attempt is made to synthesize these concepts. It is argued that the constructed character of the unconscious has to be integrated into the patient's reconstruction of his/her life story. The psychoanalytic project enables the patient to create a new narrative that claims to possess historical validity. It is important in this context not to understand the notion of “history” objectivisticallv as if it were a question of revealing certain objective historical facts. Instead, it is suggested that the connection between the present understanding of the past and the past as it was experienced in the past should be understood as a fusion of horizons. Finally, the necessary function of consciousnesslself-consciousness for the psychoanalytic project of acquiring knowledge about one's unconscious is pointed out.     

The impact of salient advertisements on reading and attention on web pages

Human vision is sensitive to salient features such as motion. Therefore, animation and onset of advertisements on Websites may attract visual attention and disrupt reading. We conducted three eye tracking experiments with authentic Web pages to assess whether (a) ads are efficiently ignored, (b) ads attract overt visual attention and disrupt reading, or (c) ads are covertly attended with distraction showing up indirectly in the reading performance. The Web pages contained an ad above a central text and another ad to the right of the text. In Experiments 1, 2, and 3A the task was to read for comprehension. Experiment 1 examined whether the degree of animation affects attention toward the ads. The results showed that ads were overtly attended during reading and that the dwell times on ads were the longest when the ad above was static and the other ad was animated. In Experiments 2 and 3, the ads appeared abruptly after a random time interval. The results showed that attention (i.e., the time when the eyes first entered an ad) was related to the ad onset time. This happened especially for the ad to the right, indicating that ads appearing close to the text region capture overt attention. In Experiment 3B the participants browsed the Web pages according to their own interest. The study demonstrated that salient ads attract overt visual attention and disrupt reading, but during free browsing, ads were viewed more frequently and for longer time than during reading.     

Technologies,Multitasking, and Driving: Attending to and Preparing for a Mobile Phone Conversation in a Car

This article investigates mobile phone calls initiated or received by drivers and passengers in cars and focuses on the participants' actions before the telephone conversation proper. Drawing on video‐recorded data of real driving situations, and building on conversation analysis and multimodal interaction analysis, this article discusses how participants temporally and sequentially coordinate situations that require multitasking, that is, use a phone while on the move. This article shows how participants draw on the current social‐interactional, material context to handle the call as relevant at that point and how they, through their vocal and bodily conduct, manage the prebeginning as a collaborative effort. The findings have relevance for research both on driving and on human–human and human–technology interaction.     

Ethnic diversity and perceptions of safety in urban middle schools

Students' perceptions of their safety and vulnerability were investigated in 11 public middle schools (more than 70 sixth-grade classrooms) that varied in ethnic diversity. Results of hierarchical linear modeling analyses indicate that higher classroom diversity is associated with feelings of safety and social satisfaction. African American (n= 511) and Latino (n= 910) students felt safer in school, were less harassed by peers, felt less lonely, and had higher self-worth the more ethnically diverse their classrooms were, even when controlling for classroom differences in academic engagement. Results at the school level were similar to those at the classroom level; higher ethnic diversity was associated with lower levels of self-reported vulnerability (but no difference in self-worth) in both fall and spring of sixth grade. In the spirit of Brown v. Board of Education, the current findings offer new empirical evidence for the psychological benefits of multiethnic schools.     

Association of pupil vandalism, bullying and truancy with teachers' absence due to illness: a multilevel analysis

The aim of this study was to examine whether vandalism, bullying, and truancy among pupils at school are associated with absence due to illness among teachers. Data on such problem behaviour of 17,033 pupils in 90 schools were linked to absence records of 2364 teachers. Pupil reported vandalism and bullying at the school-level were associated with teachers' short-term (1- to 3-day) absences. Cumulative exposure to various forms of pupils' problem behaviour was associated with even higher rates of short-term absences among teachers. No association was found between pupils' problem behaviour and teachers' long-term (>3-day) absences. In conclusion, there seems to be a link between pupils' problem behaviour and teachers' short-term absence due to illness. Further work should determine whether problem behaviour is a cause or a consequence of absences or whether the association is noncausal.     

Perceived norms and social values to capture school culture in elementary and middle school

The current study was designed to gain insights into shifting school culture by examining perceived peer group norms and social values across elementary and middle school grades. Perceived norms were assessed by asking participants (N = 605) to estimate how many grade mates were academically engaged, disengaged, and antisocial. To capture social values, peer nominations were used to assess “coolness” associated with these behaviors. Perceived norms became gradually more negative from fall to spring and across grades four to eight. Whereas academic engagement was socially valued in elementary school, negative social and academic behaviors were valued in middle school. Additionally, improved social status was associated with increased academic engagement in fifth grade, disengagement in seventh and eighth grades, and antisocial behavior in sixth grade. The findings suggest that differences between elementary and middle school cultural norms and values may shed light on negative behavior changes associated with the transition to middle school.