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Second-order conditioning (SOC; i.e., conditioned responding to S2 as a result of S1–US pairings followed by S2–S1 pairings) is generally explained by either a direct S2→US association or by an associative chain (i.e., S2→S1→US). Previous research found that differences in responses to S2 after S1 was extinguished often depended on the nature of the S2–S1 pairings (i.e., sequential or simultaneous). In two experiments with human participants, we examined the possibility that such differences result from S1 evoking S2 during extinction of S1 following simultaneous but not sequential S2–S1 pairings. This evocation of S2 by S1 following simultaneous pairings may have paired the evoked representation of S2 with absence of the outcome, thereby facilitating mediated extinction of S2. Using sequential S2-S1 pairings, both Experiments 1 and 2 failed to support this account of how extinction of S1 reduced responding to S2. Experiment 1 found that extinguishing S1 reduced responding to S2, while extinguishing S2 had little effect on responses to S1, although forward evocation of S1 during extinction of S2 paired the evoked representation of S1 with absence of the outcome. In Experiment 2, evocation of S2 during S1 nonreinforced trials was prevented because S2–S1 pairings followed (rather than proceeded) S1-alone exposures. Nevertheless, responding to S2 at test mimicked S1 responding. Responding to S2 was high in the context in which S1 had been reinforced and low in the context in which S1 had been nonreinforced. Collectively, these experiments provide additional support for the associative-chain account of SOC.  相似文献   
284.
With the high prevalence of college students experiencing psychological distress, it is becoming increasingly important to provide prevention and early intervention programs in addition to traditional psychological counseling services. This study examined the effectiveness of a suicide prevention program led by peer educators/trainers on a diverse college campus. Twenty-five suicide prevention workshops were conducted with 479 attendees. Preworkshop and postworkshop assessments revealed significant improvements in participants’ knowledge of suicide and resources. Recommendations for campus-wide suicide prevention efforts using diverse peer educators that reflect the students’ demographic and cultural background, recruitment strategies, and utilization of outreach programming in suicide prevention.  相似文献   
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ABSTRACT

This paper presents an account of a cross-sectorial study investigating whether shared understandings of practices might enhance continuity during transitions to school. Applying an ontological lens to cross-sectorial leading practices, the paper sheds light on the contextualised realities of transitions to school as a site specific lived experience. The paper begins with an overview of the ways transitions to school practices are understood, including emerging perspectives of transitions as continuity practices. Then, cross-sectorial concepts of leadership and leading are presented to highlight fundamental differences in the ways these practices are enacted across the sectors. The paper presents empirical evidence of the ways leading practices can work to establish shared understandings of transitions to school practices and policies. Given ‘little research has been done on the direct effects of leadership on transitions’ (OECD. [2017]. Starting Strong V: Transitions from Early Childhood Education and Care to Primary School. Paris: OECD Publications, 95) the paper contributes to emerging discourses that construct transitions to school as continuities.  相似文献   
288.
This paper sets out to review the on-going case study debate. We do not aim to enter the qualitative/quantitative discussion, nor do we suggest that the case study is the ultimate or only form of research. We suggest that case studies should be used in conjunction with other forms of research. What is important is that the techniques selected are appropriate for any proposed research undertaking so that quantitative and qualitative strategies can meaningfully co-exist within the same research project.

We do, however, suggest that in certain sectors the case study approach is misunderstood and under-utilized. The focus of the paper is an objective discussion of a number of issues which have been raised about the case study strategy. The discussion does not assume that there is ‘one type’ of case study, rather it refers to the multitude of case study approaches which can be classified under the case study label.

In addition to a review of the case study debate and some research strategies associated with the approach, the paper discusses a number of pertinent issues which continue to generate much debate. The issues of procedure, a multi-method strategy, objectivity, generalizability and presentation are reviewed in relation to case study research.

The case study approach has weaknesses, and its share of critics, but has become an established and respected form of research. Issues involved in case study research still need to be considered as it becomes more accepted as a viable and insightful form of research.  相似文献   

289.
The rates at which men and women published during and after PhD training in psychology were compared for samples experiencing same-sex and cross-sex supervision. When allowance was made for the research productivity and impact of the supervisor, women supervised by women published at similar rates to women supervised by men. Similarly, men supervised by men did not publish on average more often than men supervised by women. Further, there was no difference in mean publication rate between men and women who had completed their PhD degrees in the same university under supervision of the same advisor. Although the analyses provides no evidence that publication is more frequent following same-sex than cross-sex supervision, the possibility that supervision by an advisor of the same sex advantages graduates in other ways needs to be assessed.  相似文献   
290.
Abstract

The paper examines participant perceptions of the effectiveness of using case studies with college students (undergraduate – doctoral) to teach social justice and educational equity. Findings indicate that participants who identified with the characters in the cases were able to draw connections between the case and their own personal experiences. They felt the cases broadened their understanding of the topics and increased their sense of empathy and their commitment to principles of social justice.  相似文献   
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