From 1963 to 1971 about 2.8 million East German school children participated in nine nationwide mathematical competitions. The 1329 most successful participants were selected for further study. In 1970/71 and in two follow ups in 1983 and 1993, data on 23,000 relatives of these children were gathered. The data indicated the existence of a strong relationship between mathematical‐technical giftedness in school and achievement in life. There was evidence from the distribution of high professional achievement among the relatives that such achievement needs not only nurture but also an appropriate genetic background, which seems to be transmitted as a simple Mendelian trait, now open to investigation by molecular genetics. 相似文献
The author reports on the Schools Council Project based at Brighton Polytechnic, where children in schools have been encouraged and taught to use audiovisual media in the classroom for communication and social purposes. He looks at how the process of making television programmes can have dramatic effects on education and points to the power and responsibility this places on all of us who are involved in audiovisual production. 相似文献
Comparative studies describing the transition from higher education to work have often simplified the complex transition processes involved. In this paper we extend previous research by taking into account several steps that comprise labor market entry, e.g., recurrent education leading to more than one instance of labor market entry. By comparing Germany and the United States we also examine how the tertiary education systems influence these transitions via the mode of stratification (parallel tracks in Germany vs. consecutive tracks in the US), the coordination mechanism (state-controlled vs. market-based) and the degree of standardization in educational programs. In our empirical analyses using large-scale longitudinal survey data we find that transitions in the US are less standardized and regulated than in Germany. Furthermore, differences between students from lower- and higher-tier institutions are less marked than expected, both within and between the two countries. 相似文献
This article is based on ethnographic work with two “crews” of young graffiti artists in southern Mexico City. The crews share certain characteristics with gangs or urban tribes, but more with “communities of practice”: they live in the “figured world” of graffiti, a community of practice at the local and global level. Through participation, including observation and the study of fanzines, group members learn the language, technical and social skills, and values of this figured world. Their reasons to paint and the topics they express are varied, but authentic expression is fundamental. Graffiti allows these young people to establish an interesting interplay of identities in the world of graffiti versus their ordinary lives. 相似文献
We describe the development and implementation of an instructional design that focused on bringing multiple forms of active learning and student-centered pedagogies to a one-semester, undergraduate introductory biology course for both majors and nonmajors. Our course redesign consisted of three major elements: 1) reordering the presentation of the course content in an attempt to teach specific content within the context of broad conceptual themes, 2) incorporating active and problem-based learning into every lecture, and 3) adopting strategies to create a more student-centered learning environment. Assessment of our instructional design consisted of a student survey and comparison of final exam performance across 3 years—1 year before our course redesign was implemented (2006) and during two successive years of implementation (2007 and 2008). The course restructuring led to significant improvement of self-reported student engagement and satisfaction and increased academic performance. We discuss the successes and ongoing challenges of our course restructuring and consider issues relevant to institutional change. 相似文献
The roles of coach and parent are often synonymous in youth sport, but little data-based research has been conducted on the parent-coach/child-athlete relationship. Six boys in U-12 competitive soccer were interviewed regarding positive and negative aspects about playing for their father-coach. Similar questions were posed to father-coaches and two teammates. Inductive content analysis indicated that, among the benefits, sons identified perks, praise, technical instruction, understanding of ability level, insider information, involvement in decision making, special attention, quality time, and motivation. Costs of being coached by one's father included negative emotional responses, pressure/expectations, conflict, lack of understanding/empathy, criticism for mistakes, and unfair behavior. For father-coaches, positive themes included taking pride in son's achievements, reason for coaching, positive social interactions, opportunity to teach skills and values, enjoying coaching son, and quality time. Negatives included inability to separate parent-child from coach-player role, placing greater expectations and pressure on son, and showing differential attention toward son. While teammates perceived some favoritism by the parent-coach, they cited mostly positive instructional experiences. Results are discussed within motivational theories that highlight the influence of significant adults on children's psychosocial development in the physical domain. 相似文献
This paper analyzes the problem faced by a university in optimizing the quality and quantity of engineers in the face of fluctuating enrollment. This problem is embedded within an equilibrium model that considers the dynamic rational occupation choice of high school graduates and the effect of the students and the university decision on the current and future demand and supply of engineers. The explicit considerations lead to an estimable model that is capable of providing economic forecasts of the demand and supply of electrical engineers under various economic conditions. The model is estimated using aggregate data from Israel. The estimated parameters are consistent with the economic theory and fit the sample well. In particular, the model is capable of estimating the observed cyclical movements in the number of graduating electrical engineers in Israel. Finally, we provide several predictions on the equilibrium number of electrical engineers towards the end of the century. 相似文献
The similarity in the discrimination training leading to behavioral contrast and that preceding tests producing response enhancement to combined discriminative stimuli suggested that the two phenomena might be related. This was investigated by determining if contrast indiscrimination training was necessary for this outcome of stimulus compounding. Responding to tone, light, and to the simultaneous absence of tone and light (T + L) was maintained during baseline training by food reinforcement in Experiment I and by shock avoidance in Experiment II. During subsequent discrimination training, responding was reduced in T + L by programming nonreinforcement in Experiment I and safety or response-punishment in Experiment II. In the first experiment, one rat exhibited positive behavioral contrast, i.e., tone and light rates increased while his T + L rate decreased. In Experiment II, rats punished in T + L showed contrast in tone and light, this being the first demonstration of punishment contrast on an avoidance baseline with rats. The discrimination acquisition data are discussed in the light of current explanations of contrast by Gamzu and Schwartz (1973) and Terrace (1972). During stimulus compounding tests, all subjects in both experiments emitted more responses to tone-plus-light than to tone or light (additive summation). An analysis of the terminal training baselines suggests that the factors producing these test results seem unrelated to whether or not contrast occurred during discrimination training. It was concluded that the stimulus compounding test reveals the operation of the terminal baseline response associations and reinforcement associations conditioned on these multicomponent free-operant schedules of reinforcement.
Technology has provided state and federal governments with huge collections of DNA samples and identifying profiles stored in databanks. That information can be used to solve crimes by matching samples from convicted felons to unsolved crimes, and has aided law enforcement in investigating and convicting suspects, and exonerating innocent felons, even after lengthy incarceration. Rights surrounding the provision of DNA samples, however, remain unclear in light of the constitutional guarantee against "unreasonable searches and seizures" and privacy concerns. The courts have just begun to consider this issue, and have provided little guidance. It is unclear whether the laws governing protected health information are applicable to the instant situation, and if so, the degree to which they apply. DNA databanks are not uniformly regulated, and it is possible that DNA samples contained in them may be used for purposes unintended by donors of the samples. As people live their lives, they leave bits of their DNA behind. They cannot be assured that these tiny specimens will not be taken or used against their will or without their knowledge for activities such as profiling to measure tendencies such as thrill-seeking, aggressiveness, or crimes with threatening behavior. Existing racial or ethnic discrimination and profiling may also encompass genetic discrimination and profiling, creating societal class distinctions. This article will explore the constitutionality of collecting genetic materials, the ethics of such activities, and balance the social good in solving crime and deterrence against the individual's security, liberty, and privacy. 相似文献