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891.
The effect of Internet use on social relationships is still a matter of intense debate. This study examined the relationships between use of social media (instant messaging and social network sites), network size, and emotional closeness in a sample of 117 individuals aged 18 to 63 years old. Time spent using social media was associated with a larger number of online social network "friends." However, time spent using social media was not associated with larger offline networks, or feeling emotionally closer to offline network members. Further, those that used social media, as compared to non-users of social media, did not have larger offline networks, and were not emotionally closer to offline network members. These results highlight the importance of considering potential time and cognitive constraints on offline social networks when examining the impact of social media use on social relationships. 相似文献
892.
Informed by the practice of code-switching or style-switching in linguistics, “bilingual therapeutics” is proposed as the
complementary integration of two evidence-based practices in psychotherapy: motivational interviewing (MI) and dialectical
behavior therapy (DBT). Unique features of MI and DBT are presented, current research of each practice is reviewed, and their
similarities and distinctions are discussed. It is proposed that fluency in both “languages” of MI and DBT may usher in a
new therapeutic perspective to enhance client case conceptualization, illuminate subtleties of the therapeutic process, and
foster more intentional and deliberate practitioners. Specifically, MI and DBT code-switching may help recruit and retain
clients in formal treatment (e.g.,”speaking” MI more prominently to prepare clients for 12-month standard DBT) and promote
consultation among therapists. The complementary integration of MI and DBT also suggests the emergence of a linguistic “third
space,” including “spirit as synthesis” and “improvisational dance.” 相似文献
893.
The purpose of this study was to investigate the perceptions of African American male counselor educators regarding the limited number of African American male faculty members in counselor education. Implications and suggestions on how universities can recruit and retain African American male faculty members are provided. El propósito de este estudio fue investigar las percepciones de educadores en consejería afroamericanos con respecto al limitado número de miembros afroamericanos entre el profesorado para la educación de consejeros. Se proporcionan implicaciones y sugerencias sobre cómo las universidades pueden contratar y retener profesores varones afroamericanos. 相似文献
894.
Mental health has long been defined as the absence of psychopathologies, such as depression and anxiety. The absence of mental
illness, however, is a minimal outcome from a psychological perspective on lifespan development. This article therefore focuses
on mental illness as well as on three core components of positive mental health: feelings of happiness and satisfaction with
life (emotional well-being), positive individual functioning in terms of self-realization (psychological well-being), and
positive societal functioning in terms of being of social value (social well-being). The two continua model holds that mental
illness and mental health are related but distinct dimensions. This model was studied on the basis of a cross-sectional representative
internet survey of Dutch adults (N = 1,340; 18–87 years). Mental illness was measured with the Brief Symptom Inventory and mental health with the Mental Health
Continuum Short Form. It was found that older adults, except for the oldest-old, scored lower on psychopathological symptoms
and were less likely to be mentally ill than younger adults. Although there were fewer age differences for mental health,
older adults experienced more emotional, similar social and slightly lower psychological well-being. In sum, today’s older
adults have fewer mental illness problems, but they are not in a better positive mental health than today’s younger adults.
These findings support the validity of the two continua model in adult development. 相似文献
895.
896.
Cognitive functions like perception, memory, language, or consciousness are based on highly parallel and distributed information processing by the brain. One of the major unresolved questions is how information can be integrated and how coherent representational states can be established in the distributed neuronal systems subserving these functions. It has been suggested that this so-called "binding problem" may be solved in the temporal domain. The hypothesis is that synchronization of neuronal discharges can serve for the integration of distributed neurons into cell assemblies and that this process may underlie the selection of perceptually and behaviorally relevant information. As we intend to show here, this temporal binding hypothesis has implications for the search of the neural correlate of consciousness. We review experimental results, mainly obtained in the visual system, which support the notion of temporal binding. In particular, we discuss recent experiments on the neural mechanisms of binocular rivalry which suggest that appropriate synchronization among cortical neurons may be one of the necessary conditions for the buildup of perceptual states and awareness of sensory stimuli. 相似文献
897.
In this introduction we discuss the motivation behind the workshop “Towards a New Epistemology of Mathematics” of which this
special issue constitutes the proceedings. We elaborate on historical and empirical aspects of the desired new epistemology,
connect it to the public image of mathematics, and give a summary and an introduction to the contributions to this issue.
相似文献
Bernd BuldtEmail: |
Benedikt L?we (Corresponding author)Email: |
Thomas MüllerEmail: |
898.
German dialect geography developed, inter alia, as a means to compensate the shortcomings of the Young Grammarians’ approach
to language. In contrast to the latter, it was conceived of to be a sociolinguistic project, constituting thereby one link
between the development of Soviet and German linguistics. The article tries to answer such questions as who initially participated
in transferring ideas of German dialectology to the Soviet Union and what kind of motivations underlay those transfers. Combining
biographical facts with systematic aspects, the article surveys the filiations of some productive ideas with the help of archival
sources, i.e. letters of the Soviet scholars Dinges (1891–1932) and Viktor Žirmunskij (1891–1971). Finally, I try to single
out the elements in Žirmunskij dialect geography, which are specifically sociolinguistic.
相似文献
Matthias AumüllerEmail: |
899.
900.
Preservation of long-term memory and synaptic plasticity despite short-term impairments in the Tc1 mouse model of Down syndrome 下载免费PDF全文
Morice E Andreae LC Cooke SF Vanes L Fisher EM Tybulewicz VL Bliss TV 《Learning & memory (Cold Spring Harbor, N.Y.)》2008,15(7):492-500
Down syndrome (DS) is a genetic disorder arising from the presence of a third copy of the human chromosome 21 (Hsa21). Recently, O’Doherty and colleagues in an earlier study generated a new genetic mouse model of DS (Tc1) that carries an almost complete Hsa21. Since DS is the most common genetic cause of mental retardation, we have undertaken a detailed analysis of cognitive function and synaptic plasticity in Tc1 mice. Here we show that Tc1 mice have impaired spatial working memory (WM) but spared long-term spatial reference memory (RM) in the Morris watermaze. Similarly, Tc1 mice are selectively impaired in short-term memory (STM) but have intact long-term memory (LTM) in the novel object recognition task. The pattern of impaired STM and normal LTM is paralleled by a corresponding phenotype in long-term potentiation (LTP). Freely-moving Tc1 mice exhibit reduced LTP 1 h after induction but normal maintenance over days in the dentate gyrus of the hippocampal formation. Biochemical analysis revealed a reduction in membrane surface expression of the AMPAR (α-amino-3-hydroxy-5-methyl-4-propionic acid receptor) subunit GluR1 in the hippocampus of Tc1 mice, suggesting a potential mechanism for the impairment in early LTP. Our observations also provide further evidence that STM and LTM for hippocampus-dependent tasks are subserved by parallel processing streams. 相似文献