熟悉性对外群体同质性效应的影响

两个实验考查了年龄和性别群体中是否存在外群体同质性效应以及熟悉性对该种效应的影响。结果表明：1．年龄群体中存在明显的外群体同质性效应,这与青年群体和老年群体彼此不够熟悉有关;2．性别群体中不存在外群体同质性效应,这与青年男女群体彼此较为熟悉有关。     

Growth to Freedom or Support for Life?

This article reviews the recent contributions of Amartya Sen and John McMurtry to theory of international development and social justice. The author argues that both fail to give an adequate account of the current transformation of collective life and the provision of collective goods. Without such an analysis, theories of justice are incomplete. This revised version was published online in July 2006 with corrections to the Cover Date.     

The Experiences of Students of Color at a Predominantly White Institution: Implications for Counselor Training

This qualitative study examined the experiences of 11 students of color who participated in 2 multicultural counseling courses in a master’s‐level counseling program at a predominantly White institution. Findings illustrate students’ learning experiences based on instructors’ racial and ethnic identities, including a pivotal transition from distrust to trust toward the White instructor. Implications for teaching race‐based topics with students of color are presented. Este estudio cualitativo examinó las experiencias de 11 estudiantes de color que participaron en dos cursos de consejería multicultural en un programa de consejería de nivel máster en una institución predominantemente blanca. Los hallazgos ilustran las experiencias de aprendizaje de los alumnos basadas en las identidades raciales y étnicas de los docentes, incluyendo una transición fundamental desde la desconfianza hasta la confianza hacia el docente blanco. Se presentan las implicaciones para la enseñanza de temas basados en la raza con alumnos de color.     

Autobiographical memory in angry and anxious individuals

Recent studies have found that angry individuals are characterized by more pronounced attentional and interpretation biases toward threat than anxious individuals. The present study examined anger-related, anxiety-related, and neutral autobiographical memories in 35 angry participants, 33 anxious participants, and 29 non-angry/non-anxious, or healthy participants. Objective indices of autobiographical memories (i.e., retrieval latency, coding of specificity and affective tone) suggested that groups retrieved memories with similar properties. However, both angry and anxious participants rated their memories as less pleasant than healthy participants. These results indicate that memory biases are not part of the cognitive sequelae associated with anger and anxiety, although aspects of the appraisal of these personal memories are distorted.     

Substance abuse in sixth grade: results of a prevention program on adolescents' self-reported drug-related attitudes and behavior

Effectiveness of the Preventive Dimensions Program, a K-12 Utah plan for safe and drug-free schools, was assessed among 150 sixth-grade students. Participants' knowledge about drug use increased, as did all children's intent to use marijuana.     

Defensive copers show a deficit in passive avoidance learning on Newman's go/no-go task: implications for self-deception and socialization

The present study investigated whether passive avoidance learning was retarded by defensive coping strategies designed to minimize exposure to negatively valenced stimuli. High-anxious individuals, low-anxious individuals, and defensive copers completed a computerized go/no-go task, in which they learned when to press or not to press a button, in response to contingent positive and negative feedback. The duration that feedback remained onscreen was self-regulated. Defensive copers showed preferential reflection away from negative feedback, committed more passive-avoidance errors, and were characterized by impaired learning, overall. Further, the ratio of reflection on negative feedback to reflection on positive feedback directly mediated both passive-avoidance errors and overall learning. Defensive coping strategies, therefore, appear to interfere with passive avoidance learning, thereby fostering perseverative, dysfunctional action patterns by reducing knowledge gained from previous mistakes. Implications for the learning of effective socialization strategies, and for psychopathy-which is commonly characterized by similar passive-avoidance deficits-are subsequently considered.     

Quantification of brain lesions using interactive automated software

We developed an interactive program, Analysis of Brain Lesions (ABLe) so that researchers studying the effects of brain lesions on cognition could have a user-friendly tool that could quantitatively characterize such lesions. The program was prepared in Tcl/Tk and will run on any UNIX or PC LINUX platform with the MEDx medical imaging software package. The ABLe is almost completely automated and determines the brain lesion size as well as which cytoarchitectonic brain regions (Brodmann areas) are contained within the boundaries of the lesion. Lesion data from multiple subjects can be grouped together and the degree of lesion overlap displayed. All images are analyzed and displayed within standard Talairach coordinate space, and the precision of the match between the ABLe Brodmann area graphics and the subject/patient brain is easily confirmed. The program is the first easy-to-use software that contains these specific features and is available for interested researchers with a background in lesion analysis.     

Action coordination in groups and individuals: learning anticipatory control

When individuals act alone, they can internally coordinate the actions at hand. Such coordination is not feasible when individuals act together in a group. The present research examines to what extent groups encounter specific challenges when acting jointly and whether these challenges impede extending planning into the future. Individuals and groups carried out a tracking task that required learning a new anticipatory control strategy. The results show that groups face additional demands that are harder to overcome when planning needs to be extended into the future. Information about others' actions is a necessary condition for groups to effectively learn to extend their plans. Possible mechanisms for exerting and learning anticipatory control are discussed.