The Roles of Privacy and Trust in Children's Evaluations and Explanations of Digital Tracking

A “digital revolution” has introduced new privacy violations concerning access to information stored on electronic devices. The present two studies assessed how U.S. children ages 5–17 and adults (N = 416; 55% female; 67% white) evaluated those accessing digital information belonging to someone else, either location data (Study 1) or digital photos (Study 2). The trustworthiness of the tracker (Studies 1 and 2) and the privacy of the information (Study 2) were manipulated. At all ages, evaluations were more negative when the tracker was less trustworthy, and when information was private. However, younger children were substantially more positive overall about digital tracking than older participants. These results, yielding primarily medium-to-large effect sizes, suggest that with age, children increasingly appreciate digital privacy considerations.     

Informants' Traits Weigh Heavily in Young Children's Trust in Testimony and in Their Epistemic Inferences

This study examined how informants' traits affect how children seek information, trust testimony, and make inferences about informants' knowledge. Eighty‐one 3‐ to 6‐year‐olds and 26 adults completed tasks where they requested and endorsed information provided by one of two informants with conflicting traits (e.g., honesty vs. dishonesty). Participants also completed tasks where they simultaneously considered informants' traits and visual access to information when inferring their knowledge and trusting their testimony. Children and adults preferred to ask and endorse information provided by people who are nice, smart, and honest. Moreover, these traits influenced the knowledge that young children attributed to informants. Children younger than 5 years of age reported that people with positive traits were knowledgeable even when they lacked access to relevant information.     

Children's Selective Trust in Promises

There has been extensive research into the development of selective trust in testimony, but little is known about the development of selective trust in promises. The present research investigates children's (N = 264) selective trust in others' promises to help. In Study 1, 6-year-olds selectively trusted speakers who had previously kept a promise. In Study 2, 5-year-olds displayed selective trust for speakers who had previously kept a prosocial promise (promise to help). In Study 3, 5-year-olds trusted a speaker, who kept a prosocial promise, over a helper. These data suggest that from the age of 5 children show selective trust in others’ promises using prosociality, promise keeping, or both to inform their judgments.     

数学直觉的作用

回顾数学直觉的有关概念,对庞加莱、阿达玛和徐利治的数学直觉观作简要论述和比较.强调产生数学直觉的不同论述:数学直觉产生于对数学的观察、归纳、类比和联想;数学直觉产生于无意识思维过程.根据数学家的共识,即数学直觉是可以培养的,结合阿达玛、庞加莱和徐利治先生的有关观点,提出数学直觉的培养途径以及数学教师如何培养学生的数学发明的一般原则;同时也给出了部分大数学家的数学直觉的不解之谜和认识.结合学习和研究数学的体会,提出从有意识到无意识再到有意识的循环思维过程,并指出渗透在其中的数学思想方法.     

Children's Undrstanding of Epistemic Conduct in Self-Deception and Other False Belief Stories

In self-deception persons accept false belief through a motivated disregard for countervailing evidence. Such epistemic misconduct renders them responsisble for their own deception. It was hypothesized that children's understanding of this responsibility would be associated with an understanding of how evidence informs belief. In the study 4- to 9-year-old children's understanding of the relations between false belief, evidence, and epistemic responsibility was examined using stories involving self-deception, lying, and misleading appearances. Results indicated that younger children who understood false belief understood simpler types of deception, but that understanding self-deceivers' epistmic responsibility was limited to older children who understood the relevance of evidence to belief formation.     

The Roles of Achievement-Related Behaviours and Parental Beliefs in Children's Mathematical Performance

This study aimed to investigate the developmental dynamics between children's mathematical performance, the task-focused versus task-avoidant behaviours they show in the classroom, and their parents' beliefs concerning their school competence. The mathematical performance of 111 six- to seven-year-old children was tested, and their task-focused versus task-avoidant behaviours were rated by their teachers four times during their first school year. Parents filled in questionnaires measuring their skill-specific and general beliefs about their children's school competencies at the beginning and at the end of the school year. The results showed that parents' beliefs in their children's general school competence increased their children's task-focused behaviours at school, which further predicted the child's high level of maths performance. Parents' beliefs in their children's competence in mathematics, in turn, contributed directly to the children's high mathematical performance. Moreover, children's high performance increased parents' subsequent beliefs in their children's mathematical competence, whereas children's task-focused behaviours predicted parents' beliefs in their children's overall school performance.     

Knowing ‘Wh’ and Knowing How: Constructing Professional Curricula and Integrating Epistemic Fields

Much of the debate on the nature of knowing how has been concerned with whether it is to be conceived of as an ability (know‐how or KH) or as the possession of propositional knowledge (KT), perhaps in a practical form. Comparatively little has been written about knowing wh (KWh) constructions and the ways in which they do or do not fit into this debate. Do such debates have any bearing on the practical concerns of the educators of professionals? This paper considers the case of Knowing Wh constructions and their epistemic status with reference to their use in professional contexts. The argument to be developed is that KT and KH are distinct but closely related epistemic abilities and that in assessing professional capacity we often find them together as part of an overall professional competence. The use of KWh constructions in professional settings supports this contention, as they can occur as cases of both KT and KH, depending on context. The claim is illustrated by examining and interpreting KWh constructions in professional qualifications and interpreting them in the context of what is required to make sense of them as elements of qualifications.     

The Kansas Family and Children's Trust Fund: funding prevention programs in the eighties

The Kansas Family and Children's Trust Fund is an innovative approach to developing funding for community-based family violence prevention programs. Using a legislated trust fund which generates money from marriage license fees, the program has been developed based on three assumptions. First, funding at the federal level for programs to prevent family violence has probably reached its peak and has never been sufficiently secure as to allow for continuity in prevention programs from year to year. Second, there is a trend toward allowing local communities to assume a greater portion of the responsibility for developing social welfare programming. Third, in the long run more can be accomplished with a small amount of money given to a community-based organization which efficiently uses volunteer time than a larger amount of money given to an agency which has a large infrastructure to support. Information on the procedure utilized to enable passage of the Trust Fund legislation is included as well as a discussion of issues that arose in the legislation process. In addition, an explanation of the current funding procedures for accessing Trust Fund moneys is given along with examples of the types of programs that have received funding. Finally, examples are provided of similar approaches that have been used in other states as well as a call for additional innovative approaches to providing funding for child abuse prevention programs.     

Young Children's Understanding of Fictional versus Epistemic Mental Representations: Imagination and Belief

In 2 studies, 3- and 4-year-old children's ability to reason about the relation between mental representations and reality was examined. In the first study, children received parallel false belief and "false" imagination tasks. Results revealed that children performed better on imagination tasks than on belief tasks. The second study demonstrated that, when various alternative explanations for better performance on the imagination task were controlled for, children still performed significantly better when reasoning about another person's imagination than when reasoning about another person's belief. These findings suggest that children's understanding that mental representations can differ from reality may emerge first with respect to representations that do not purport to represent reality truthfully.     

Middle School Children's Responses to Enid Blyton in ‘The Bradford Book Flood Experiment’

During‘The Bradford Book Flood Experiment’(1976–80), a longitudinal record was kept of the reading of one year-group of children in each of four middle schools in predominantly working-class areas. The children's choices of, and responses to, books were recorded on reading record forms, questionnaires which were completed by the children each time they read a book. Subsequently, it was possible to isolate responses to books written by Enid Blyton and compare responses to these books with responses to all the other authors together (i.e., to an‘average’other author). The chi-square test of significance was applied throughout. It was found that children responded more favourably to Enid Blyton in response to every question, the differences being statistically significant in every instance. Children's reasons for choice of books by Enid Blyton are quoted and categorized. An attempt is made to analyse the reasons for Enid Blyton's popularity.     

论直觉

直觉是大脑透过现象对事物内在本质的直接洞察、迅速理解和瞬间判断，它是理性认识成果直接作用于感受活动的结果。直觉具有无意识性、非逻辑性、整体性、迅速性和或然性。在科学创造过程中，直觉起着选择创造目标、提出科学预见、建立创新假说等重要作用。要从置身实践活动、珍惜观察中的猜想和预测、保障心灵活动的自发性、加强审美教育等方面培养直觉能力。     

When Parents’ Praise Inflates,Children's Self‐Esteem Deflates

Western parents often give children overly positive, inflated praise. One perspective holds that inflated praise sets unattainable standards for children, eventually lowering children's self‐esteem (self‐deflation hypothesis). Another perspective holds that children internalize inflated praise to form narcissistic self‐views (self‐inflation hypothesis). These perspectives were tested in an observational‐longitudinal study (120 parent–child dyads from the Netherlands) in late childhood (ages 7–11), when narcissism and self‐esteem first emerge. Supporting the self‐deflation hypothesis, parents’ inflated praise predicted lower self‐esteem in children. Partly supporting the self‐inflation hypothesis, parents’ inflated praise predicted higher narcissism—but only in children with high self‐esteem. Noninflated praise predicted neither self‐esteem nor narcissism. Thus, inflated praise may foster the self‐views it seeks to prevent.     

Children's literacy interest and its relation to parents’ literacy‐promoting practices

This study examined how children's literacy interests related to parent literacy‐promoting practices across time. Using a sample of 909 preschool‐age children and the newly developed Child Activities Preference Checklist, literacy interest appeared to be a complex construct, not easily captured by a single measure. In a subsample of 230 children with longitudinal data, parent literacy practices and child literacy interests related concurrently and across time. Parent literacy practices were more stable than child literacy interests, with children's literacy interest continuing to develop over the preschool year. Parent practices of exposing children to literacy and teaching them literacy concepts appeared to be distinct constructs. Exposure to literacy was especially important in the growth of literacy interests and the hypothesis that exposure has a negative effect on children with little initial interest was not fully supported.     

When Peer Performance Matters: Effects of Expertise and Traits on Children's Self‐Evaluations After Social Comparison

The present research examined the influence of peer characteristics on children's reactions to upward social comparisons. In Experiment 1, one hundred twenty‐six 5‐, 8‐, and 10‐year‐olds were told that they were outperformed by an expert or novice peer. Older children reported higher self‐evaluations after comparisons with an expert rather than a novice, whereas 5‐year‐olds reported high self‐evaluations broadly. In Experiment 2, ninety‐eight 5‐ to 6‐year‐olds and 9‐ to 10‐year‐olds were told that the peer possessed a positive or negative trait that was task relevant (i.e., intelligence) or task irrelevant (i.e., athleticism). Older children reported higher self‐evaluations after hearing about positive rather than negative traits, irrespective of relevance. Younger children reported high self‐evaluations indiscriminately. Results inform the understanding of social comparison development in childhood.     

Effects of Mobile Phones on Children's and Adolescents’ Health: A Commentary

The use of digital technology has grown rapidly during the last couple of decades. During use, mobile phones and cordless phones emit radiofrequency (RF) radiation. No previous generation has been exposed during childhood and adolescence to this kind of radiation. The brain is the main target organ for RF emissions from the handheld wireless phone. An evaluation of the scientific evidence on the brain tumor risk was made in May 2011 by the International Agency for Research on Cancer at World Health Organization. The scientific panel reached the conclusion that RF radiation from devices that emit nonionizing RF radiation in the frequency range 30 kHz–300 GHz is a Group 2B, that is, a “possible” human carcinogen. With respect to health implications of digital (wireless) technologies, it is of importance that neurological diseases, physiological addiction, cognition, sleep, and behavioral problems are considered in addition to cancer. Well‐being needs to be carefully evaluated as an effect of changed behavior in children and adolescents through their interactions with modern digital technologies.     

Evaluating and Approaching a Strange Animal: Children's Trust in Informant Testimony

This study examined 3‐ to 7‐year‐old children's reliance on informant testimony to learn about a novel animal. Sixty participants were given positive or negative information about an Australian marsupial from an informant described as a maternal figure or a zookeeper. Children were asked which informant was correct and were invited to touch the animal, which was a stuffed toy hidden in a crate. Overall, younger children endorsed the zookeeper's testimony about the animal, but touched the animal more readily when the maternal figure provided positive information. Older children endorsed the informant who provided positive information, but showed some sensitivity to zookeeper expertise. Age differences were obtained in the association between participant characteristics and informant selection and animal approach behavior.     

The Role of Teacher Epistemic Cognition, Epistemic Beliefs, and Calibration in Instruction

This review examines the literature on teacher epistemic cognition, epistemic beliefs, and calibration to consider the relation between these constructs and instruction that emerged from empirical studies. In considering how this body of literature can enhance understanding of how students become masters of their learning processes, we will briefly review how different theoretical frameworks have conceptualized the relation between epistemic cognition, epistemic beliefs, calibration and metacognition, self-regulation, and self-regulated learning. Implications for research include a more nuanced conceptualization of epistemic beliefs and a theoretical integration of these constructs. Implications for practice regard the reciprocal relations between teachers’ knowledge, experience, epistemic cognition, epistemic beliefs, and calibration and their effects on pedagogical practices. The role of teachers’ education and professional development is discussed. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users.     

Infants’ and Young Children's Imitation of Linguistic In‐Group and Out‐Group Informants

Although children can use social categories to intelligently select informants, children's preference for in‐group informants has not been consistently demonstrated across age and context. This research clarifies the extent to which children use social categories to guide learning by presenting participants with a live or video‐recorded action demonstration by a linguistic in‐group and/or out‐group model. Participants’ (N = 104) propensity to imitate these actions was assessed. Nineteen‐month‐olds did not selectively imitate the actions of the in‐group model in live contexts, though in‐group preferences were found after watching the demonstration on video. Three‐year‐olds selectively imitated the actions demonstrated by the in‐group member regardless of context. These results indicate that in‐group preferences have a more nuanced effect on social learning than previous research has indicated.     

数学分析中的几何直观

通过零点定理、最值性定理、反函数的求导法则、一致连续性和拐点的定义来说明几何直观在《数学分析》教学中的作用．     

语感在翻译中的作用

语感的实质是对语言文字的一种敏锐的感知,在翻译中,它不仅有助于语言内涵的深层感悟,而且有助于语言内涵的再创造,因此在转达原作的音美、形美之时,更应以敏锐的眼光、酣沛的情感和贴切的语句再现原作的意象美和情趣美。