Development of mental attention in gifted and mainstream children: the role of mental capacity, inhibition, and speed of processing

The study examined performance of 6- to 11-year-old children, from gifted and mainstream academic programs, on measures of mental-attentional capacity, cognitive inhibition, and speed of processing. In comparison with mainstream peers, gifted children scored higher on measures of mental-attentional capacity, responded more quickly on speeded tasks of varying complexity, and were better able to resist interference in tasks requiring effortful inhibition. There was no group difference on a task requiring automatic inhibition. Comparisons between older and younger children yielded similar results. Correlations between inhibition tasks suggest that inhibition is multidimensional in nature, and its application may be affected by task demands. Measures of efficiency of inhibition and speed of processing did not explain age or group differences on a complex intellective measure of mental-attentional capacity.     

大河之歌

听,这响彻江畔不绝于耳的大河之歌。听。船夫们那高亢而雄浑的歌声。他们正奋力摇着船橹。只见,船尾高翘,船桅紧扎,瞬、即便驶入湍急的江流之中。听,纤夫们这越发紧迫而急促的呼喊。他们或六人一伙拉着一条小船。或数百人一伍拉着一艘大船,在激流中勇进。霎时间,在这翻滚的波涛之上,便扬起了方帆。大船之上,一人站立中央,击鼓作响,鼓声阵阵以鼓舞士气。纤夫们则低弯着腰,尽人之所能,竭尽其力。     

里查德·麦基翁论通识教育

里查德·麦基翁(Richard Mckeon)(1900-1985),美国哲学家,曾任美国哥伦比亚大学文艺复兴和中世纪哲学首席教授、芝加哥大学教授,主张通过名著课程计划来实施通识教育。     

“发”现你的美

对于女孩子来说,一头秀发是整体造型的亮点。无论是温柔的长发还是俏丽的短发,健康的头发才能展现出你的美!可是我们在护发过程中总有些困惑和误区。如何摆脱这些小问题?相信今天的专题会给你带来不少帮助哦!     

Kinetic analysis of γ-glutamyltransferase reaction process for measuring activity via an integration strategy at low concentrations of γ-glutamyl p-nitroaniline

At 0.12 mmol/L γ-glutamyl p-nitroaniline (GGPNA), an improved integrated method was developed for kinetic analysis of γ-glutamyltransferase (GGT) reaction process and the integration with the classical initial rate method to measure serum GGT. For the improved integrated method, an integrated rate equation, which used the predictor variable of reaction time and considered inhibitions by both GGPNA and products, was nonlinearly fit to GGT reaction processes. For the integration strategy, classical initial rates were estimated when GGPNA consumption percentages were below 50%; otherwise, maximal reaction rates of GGT were estimated by the improved integrated method and converted into initial rates according to the differential rate equation at 0.11 mmol/L GGPNA. The integration strategy was validated using optimized GGT kinetic parameters and 10-s intervals to record reaction curves within 8.0 min. By the integration strategy, there was a linear response from 0.9 to 32.0 U/L GGT, coefficients of variation were below 3.5% for GGT from 8.0 to 32.0 U/L (n=5), and GGT activities in clinical sera responded linearly to their classical initial rates at 2.00 mmol/L GGPNA with an expected slope. Therefore, the integration strategy was successful in measuring GGT at 0.12 mmol/L GGPNA.     

高中英语教学中阅读能力的培养

阅读理解是高中英语教学的一个重要内容,在高考中所占的比重也是举足轻重的,但是普通高中学生的阅读理解能力参差不齐,严重地影响到了学生英语学习的兴趣,进而影响到学生高考的成绩。笔者通过多年的英语教学工作,从多方面论述了如何培养高中学生的英语阅读能力。     

我们往何处去？

所以,在今天讲话结束时我要重申一遍：我们有一项任务,让我们怀着“神圣的不满”踏上征途。我们不满足,直到美国不再有高调的信条和低效的行动。我们不满足,直到那分隔财富和舒适外城与贫穷和绝望内城的可悲之墙,被正义之槌击得粉碎。我们不满足,直到那些在希望边缘挣扎的人们能够时时拥有安全感。我们不满足,直到贫民窟被扔进历史的垃圾堆,每一个家庭都体面地生活在干净卫生的房屋中。     

溪涧之恋

小溪涧一点也不渺小,在我们的心目中,它比浩瀚的巨河大川更大、更重要。它们或叫岩溪,或叫磨坊溪或泥溪。它们不会在宣传旅游小册子或国歌里受到颂扬。溪涧是我们家附近一些微不足道的小地方。