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Sibling‐directed teaching of mathematical topics during naturalistic home interactions was investigated in 39 middle‐class sibling dyads at two time points. At time 1 (T1), siblings were 2 and 4 years of age, and at time 2 (T2), siblings were 4 and 6 years of age. Intentional sequences of sibling‐directed mathematical teaching were coded for (i) topics (e.g., number), (ii) contexts (e.g., play with materials/toys), and (iii) type of knowledge (conceptual and procedural). Siblings engaged in teaching number, geometry, and measurement at T1 and demonstrated preliminary evidence of teaching of grouping, relations, and operations at T2. Regarding context, at T1, mathematical teaching occurred most frequently during play with materials/toys, while at T2, games with rules were prominent. Teaching of conceptual or procedural knowledge varied over time and by topic and context. Findings are discussed in light of recent work on understanding children's mathematical knowledge as it develops in the informal family context. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
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This study investigated college students’ sexual hooking up and its associations with alcohol consumption for men and women; furthermore, potential differences related to ethnicity were investigated. Students at a midsized southeastern university who identified as Caucasian or African American (N = 227) completed a survey assessing sexual behavior, demographics, and alcohol consumption. Heavy drinking was associated with ever hooking up, number of hookup partners, hookup frequency, and level of sexual contact during hooking up for Caucasian students, but not for their African American peers. Among Caucasians, moderate drinking men reported more intense sexual contact during hookups than their female peers who were moderate drinkers; sexual contact levels were more similar for men and women who were either nondrinkers or heavy drinkers. Limitations and strengths are discussed, as are ideas for future studies on hooking up and for educational efforts to protect against potentially negative outcomes of hooking up.  相似文献   
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This research tested whether social comparison can encourage adolescents to make less risky health decisions. Two studies demonstrated that when young adults compare themselves with drinkers, they become less willing to drink if they perceive dissimilarity between themselves and those drinkers. When participants in Study 1 compared with someone who drinks regularly, their perceived similarity to prototypical drinkers was positively related to their willingness to drink. In Study 2, participants identified or contrasted themselves with prototypical drinkers; those encouraged to contrast who also felt less similar to the prototype reported less willingness to drink. These studies support the prototype/willingness model's assumption that prototypes affect willingness to drink through social comparison.  相似文献   
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Abstract

Prompted by the observation that many recently trained teachers find themselves unprepared to cope with many aspects of classroom life despite considerable subject matter competence and technical proficiency, this paper proposes and describes a brief instructional programme designed to enhance teachers' understanding of classroom interactions from a psychodynamic perspective. Published autobiographical accounts of gifted teachers serve as texts for reading and discussion. These personal narratives are conceptualized within psychodynamic frameworks illuminating in meaningful fashion mundane as well dramatic moments in classroom interaction. The course is intended to enhance teacher competence and morale, to stimulate further reflection and to facilitate professional discourse about children and teaching.  相似文献   
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Using principles from cultural psychology, we describe and analyse the senior author's experience of dissonance while visiting Mother Meera, a contemporary Hindu avatara, in order to receive her darshan, the blessing derived from the gaze of a self-realised person. Feelings of love and acceptance were contrasted with the disturbing feelings evinced by the exclusion of emotionally disturbed and physically handicapped individuals. Using the principle of intentional persons and intentional worlds co-constructing each other, socio-organic and role-centred conceptions of personhood found in South Asia are contrasted with separative and individual rights-based conceptions of individuals in North Atlantic cultures. Other theoretical formulations from cultural psychology including those concerning narrative are employed in order to illustrate the felt intensity of dissonance between the experiences of love and that of exclusion.  相似文献   
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The aim of this study was to systematically review the existing research on the health and well-being of military drone operators and intelligence analysts in order to provide an overview of research and identify gaps in this area. Six literature databases and 2 databases containing unclassified military reports were searched for relevant papers produced between January 1996 and May 2016. The search criteria were broad to allow for the identification of all relevant studies on the topic. Fifteen studies met the inclusion criteria; all of which were conducted in the U.S. with the U.S. Air Force personnel. The main sources of occupational stress reported by participants across the studies were operational. The rates of mental health diagnoses, including PTSD, were low, but levels of psychological distress were higher in drone and intelligence operators than in comparison groups. Fatigue emerged as a significant concern. It is important that future studies examine a variety of mental and physical health outcomes. The health and well-being of drone operators and intelligence analysts should be studied not just in the U.S., but also in other countries that are using drones for military purposes.  相似文献   
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Years after a shocking news event many people confidently report details of their flashbulb memories (e.g., what they were doing). People's confidence is a defining feature of their flashbulb memories, but it is not well understood. We tested a model that predicted confidence in flashbulb memories. In particular we examined whether people's social bond with the target of a news event predicts confidence. At a first session shortly after the death of Michael Jackson participants reported their sense of attachment to Michael Jackson, as well as their flashbulb memories and emotional and other reactions to Jackson's death. At a second session approximately 18 months later they reported their flashbulb memories and confidence in those memories. Results supported our proposed model. A stronger sense of attachment to Jackson was related to reports of more initial surprise, emotion, and rehearsal during the first session. Participants' bond with Michael Jackson predicted their confidence but not the consistency of their flashbulb memories 18 months later. We also examined whether participants' initial forecasts regarding the persistence of their flashbulb memories predicted the durability of their memories. Participants' initial forecasts were more strongly related to participants' subsequent confidence than to the actual consistency of their memories.  相似文献   
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