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101.
Electrophysiological work in nonhuman primates has established the existence of multiple types of signals in the temporal lobe that contribute to recognition memory, including information regarding a stimulus’s relative novelty, familiarity, and recency of occurrence. We used high‐density event‐related potentials (ERPs) to examine whether young infants represent these distinct types of information about previously experienced items. Twenty‐four different highly familiar and initially novel items were each repeated exactly once either immediately ( Experiment 1 ), or following one intervening item ( Experiment 2 ). A late slow wave (LSW) component of the ERP exhibited neural responses consistent with recency signals over right‐central leads, but only when there were no intervening stimuli between repetitions. The LSW also exhibited responses consistent with familiarity signals over anterior‐temporal leads, but only when there were intervening stimuli between repetitions. A mid‐latency negative component (i.e., the Nc) also distinguished familiar from novel items, but did not exhibit a pattern of responding consistent with familiarity signals. These findings suggest that infants encode information about a variety of objects from their natural environments into long‐term memory, and can discriminate between familiar and unfamiliar items, and between recently seen and new items, very quickly (within 1 sec). They also suggest that infants represent information about not only whether a stimulus is familiar or unfamiliar but also whether it has been seen recently. 相似文献
102.
Robert Evans Harry Collins Martin Weinel Jennifer Lyttleton‐Smith Hannah O'Mahoney Willow Leonard‐Clarke 《The British journal of sociology》2019,70(4):1561-1581
The nature and role of social groups is a central tension in sociology. On the one hand, the idea of a group enables sociologists to locate and describe individuals in terms of characteristics that are shared with others. On the other, emphasizing the fluidity of categories such as gender or ethnicity undermines their legitimacy as ways of classifying people and, by extension, the legitimacy of categorization as a goal of sociological research. In this paper, we use a new research method known as the Imitation Game to defend the social group as a sociological concept. We show that, despite the diversity of practices that may be consistent with self‐identified membership of a group, there are also shared normative expectations – typically narrower in nature than the diversity displayed by individual group members – that shape the ways in which category membership can be discussed with, and performed to, others. Two claims follow from this. First, the Imitation Game provides a way of simultaneously revealing both the diversity and ‘groupishness’ of social groups. Second, that the social group, in the quasi‐Durkheimian sense of something that transcends the individual, remains an important concept for sociology. 相似文献
103.
Leonard Sax 《Journal of sex research》2013,50(3):174-178
Anne Fausto‐Sterling's suggestion that the prevalence of intersex might be as high as 1.7% has attracted wide attention in both the scholarly press and the popular media. Many reviewers are not aware that this figure includes conditions which most clinicians do not recognize as intersex, such as Klinefelter syndrome, Turner syndrome, and late‐onset adrenal hyper‐plasia. If the term intersex is to retain any meaning, the term should be restricted to those conditions in which chromosomal sex is inconsistent with phenotypic sex, or in which the phenotype is not classifiable as either male or female. Applying this more precise definition, the true prevalence of intersex is seen to be about 0.018%, almost 100 times lower than Fausto‐Sterling's estimate of 1.7%. 相似文献
104.
105.
William A. Fisher Ph.D. Leonard A. White Ph.D. Donn Byrne Ph.D. Kathryn Kelley Ph.D. 《Journal of sex research》2013,50(1):123-151
This review discusses the measurement, antecedents, and consequents of erotophobia‐erotophilia—the disposition to respond to sexual cues along a negative‐positive dimension of affect and evaluation. Test construction procedures which resulted in a 21‐item measure of this personality construct are reported. Evidence indicates that the measure is internally consistent, shows acceptable degrees of convergent and discriminant validity, and is correlated as expected with related constructs such as authoritarianism, adherence to traditional sex roles, indices of value orthodoxy, and various measures of sex‐related evaluations. Retrospective surveys and group contrasts suggest that erotophobia‐erotophilia is a learned disposition based on one's exposure to sex‐related restrictiveness and punishment during socialization. Consequents of erotophobia‐erotophilia involve avoidance versus approach responses to sexuality in a wide range of situations; scores on this test predict differential sexual experience, responses to erotica, likelihood of engaging in sexual fantasy behavior, the tendency to learn about or teach others about sex, engaging in sex‐related health care, the probability of utilizing contraception, and behaving sexually during pregnancy and postpartum. Cross‐cultural research provides evidence for the generality of this construct beyond North America. 相似文献
106.
107.
Joseph Sharit Sara J. Czaja Sankaran N. Nair Didrik W. Hoag Dwayne C. Leonard Ercan K. Dilsen 《Work and stress》1998,12(2):125-144
An increasingly older workforce and a growing emphasis on jobs involving interaction with computers have resulted in a need to more carefully examine the relationship between ageing and computer-based work. In this study, a sample of 394 subjects ranging in age from 20-75 years performed a computer task across a 3-day period. Three different types of computer-based jobs (data entry, information retrieval, and accounts balancing) performed at three large US companies were simulated. Age differences in the subjective experience of stress, workload, and bodily discomfort were evaluated. The results indicated that age effects for these measures varied according to task. The older subjects perceived greater workload for the more mentally challenging problem-solving oriented accounts balancing task (Which involved a graphical user interface) than the younger participants, even with increased exposure to the task. However, the older subjects generally experienced less stress than the younger subjects on an information retrieval task that involved a more socially interactive telephone component. A positive relationship between the frustration component of workload and the measure of stress was also found, suggesting an important link between the constructs of stress and workload. Overall, the outcomes of this study provide important insights into design interventions intended to accommodate older as well as younger persons in the workforce. 相似文献
108.
A team of faculty explain the use of a developmental curriculum design to teach a direct practice methods course. The design is based on the principles of andragogy, which highlights self-motivated adult learning. Students and faculty collaborate in setting and implementing course objectives. The authors differentiate between the developmental design and the more traditional structured curriculum. These two approaches are compared according to their course objectives, specific content, role of faculty, and learning process. Illustrations from the course are used for clarification purposes. 相似文献
109.
Patrick C. Dwyer Joyce E. Bono Mark Snyder Oded Nov Yair Berson 《Nonprofit management & leadership》2013,24(2):181-205
We examined the separate influences of volunteers' personal motives and their team leaders' behaviors on volunteer satisfaction and contributions, along with mediating processes suggested by self‐determination theory. Participants were 302 volunteers who worked in teams at various sites through a central agency. As predicted, both personal motives for volunteering and transformational leadership influenced volunteer satisfaction through enhanced work meaningfulness and higher‐quality team relationships. However, motives that predicted volunteer contribution were different from those that predicted satisfaction. Whereas satisfaction was positively associated with motives concerning esteem enhancement and value expression, contribution was positively associated with motives to gain understanding and negatively related to motives pertaining to esteem enhancement and social concerns. Transformational leadership was positively associated with volunteer satisfaction, but not with volunteer contributions. The theoretical ramifications of these findings are discussed, along with practical implications for the recruitment and retention of volunteers. 相似文献
110.
This paper estimates the effect of a mothers employment on her teenage daughters likelihood of birth. Using data from the United States, the National Education Longitudinal Survey of 1988, the author finds that teenagers with working mothers who attend relatively wealthy schools are more likely (77%) to have a birth compared to teens who attend similar schools but have non-working mothers. In contrast, teenagers with working mothers who attend relatively poor schools are less likely (18%) to have a birth compared to teens who attend similar schools but have non-working mothers.I am indebted to Marcia Carlson, Thomas DeLeire, Angela Fertig, Brian Jacob, Darren Lubotsky, Scott Lynch, Susan Mayer, Sara McLanahan, Robert Michael, German Rodriguez, seminar participants at Princeton University and The University of Chicago, and two anonymous referees for insightful suggestions made on earlier versions of this paper. I also gratefully acknowledge financial support from a Northwestern University/University of Chicago Joint Center for Poverty Research Graduate Fellowship, a Robert R. McCormick Tribune Foundation Graduate Fellowship, the Bendheim-Thoman Center for Research on Child Wellbeing at Princeton University, and the Office of Population Research at Princeton University, which is supported by center grant 5 P30 HD32030 from the NICHD. Responsible editor: Junsen Zhang. 相似文献