Age differences in strategic planning as indexed by the tower of London

The present study examined age differences in performance on the Tower of London, a measure of strategic planning, in a diverse sample of 890 individuals between the ages of 10 and 30. Although mature performance was attained by age 17 on relatively easy problems, performance on the hardest problems showed improvements into the early 20s. Furthermore, whereas age-related performance gains by children and adolescents (ages 10-17) on the hardest problems were partially mediated by maturational improvements in both working memory and impulse control, improved performance in adulthood (ages 18+) was fully mediated by late gains in impulse control. Findings support an emerging picture of late adolescence as a time of continuing improvement in planned, goal-directed behavior.     

The role of deliberate practice and play in career progression in sport: the early engagement hypothesis

Experts acquire domain‐specific skills as a result of the activities in which they participate throughout their development. We examine the domain‐specific activities in which two groups of elite youth soccer players participated between six and 12 years of age. Our goal was to examine early participation differences between those who progressed to professional status at 16 years of age and those who did not. Data were contrasted to a control group of recreational‐level players and examined in the context of the Developmental Model of Sport Participation, which supports the importance of late specialization and early diversity between six and 12 years of age. The elite players who went on to attain professional status accumulated more hours per year in soccer play activities, but not in soccer practice, competition or other sports, between six and 12 years of age, compared with those who did not progress. The two elite groups averaged more hours per year in soccer practice compared with recreational‐level players, but not soccer play, competition or other sports. We propose the “early engagement hypothesis” to explain our results. Accordingly, practice and play in the primary sport between six and 12 years of age contributes to the development of expert performance in English soccer.     

The road to excellence: deliberate practice and the development of expertise

The relative contribution of domain‐specific and non‐domain‐specific activities to the development of soccer expertise was examined using a retrospective cross‐sectional design. Elite and sub‐elite players aged between 9 and 18 years of age completed a participation history questionnaire under supervision. Weekly and accumulated hours spent in soccer team practice most consistently discriminated between skill levels across age cohorts. Elite players spent more time in decision‐making activities during team practice, possessed higher levels of motivation and had greater parental support. Maturational indices, time spent in playful activities, sporting diversity and time at which specialization occurred did not differentiate between groups. Engaging in activities deliberately designed to improve performance rather than mere experience within the domain or experience of related activities is likely to lead to elite status.     

Adaptation to physically and emotionally demanding conditions: the role of deliberate practice

The current study elucidated the reasons for athletic performance differences between individuals who (1) engage in similar workloads, and (2) develop in similar environments. 8 elite and 11 sub‐elite swimmers, with confirming data provided by 17 of their parents and 6 of their coaches, participated in this investigation. Findings revealed that (1) a variety of different practice regimens can result in attaining expertise, and (2) highly analogous developmental experiences may not differentiate between elite and sub‐elite performers. Results provide support for a 4‐factor model of expert athletic development: high effort, supportive environment, facilitative coping strategies, and physical and psychological predispositions. Each is likely required to achieve elite athletic performance, and all must be present in such a manner that they are systematically and idiosyncratically functional.     

Developmental patterns of spatial ability: an early sex difference

Over 1,800 public school students (grades K-12, ages 6-18) took a battery of 7 spatial tests tailored to their respective developmental levels. Analyses of resulting data indicate that it is feasible to measure spatial ability throughout this developmental range with modified versions of adult paper-and-pencil tests, that a male advantage in spatial performance appears reliably by age 10, and that the magnitude of the advantage remains constant through age 18. Analysis of covariance suggests that an early female precocity in language skills may mask a male advantage in spatial ability during the primary school years. There is no indication of a sex difference in kindergarten children.     

Giftedness and evidence for reproducibly superior performance: an account based on the expert performance framework

Giftedness researchers have long debated whether there is empirical evidence to support a distinction between giftedness and attained level of achievement. In this paper we propose a general theoretical framework that establishes scientific criteria for acceptable evidence of superior reproducible performance, which any theory of exceptional performance must explain. We review evidence for superior reproducible performance, generally emerging only after extended periods of deliberate practice that result in subsequent physiological adaptations and complex cognitive mechanisms. We also apply this framework to examine proposed evidence for innate talents. With the exception of fixed genetic factors determining body size and height, we were unable to find evidence for innate constraints to the attainment of elite achievement for healthy individuals.     

中西古典舞比较之我见

本文从中国古典舞和芭蕾舞的起源差异入手,简述了中西古典舞产生的背景以及各自的发展阶段,并就中国古典舞“圆、曲、拧、倾”的审美原则和芭蕾舞“开、绷、直、立”的审美原则进行比较。     

The Cascading Development of Autonomy and Relatedness From Adolescence to Adulthood

A developmental cascade model of autonomy and relatedness in the progression from parent to friend to romantic relationships across ages 13, 18, and 21 was examined among 184 adolescents (53% female, 58% Caucasian, 29% African American) recruited from a public middle school in Virginia. Parental psychological control at age 13 undermined the development of autonomy and relatedness, predicting relative decreases in autonomy and relatedness with friends between ages 13 and 18 and lower levels of autonomy and relatedness with partners at age 18. These cascade effects extended into adult friendships and romantic relationships, with autonomy and relatedness with romantic partners at age 18 being a strong predictor of autonomy and relatedness with both friends and partners at age 21.     

Elephants Dancing in My Head: A Developmental Approach to Children''s Concepts of Specific Pains

The present study produced an empirically derived, developmental continuum of children's understanding of specific pains. Subjects of 5 age groups: preschool (ages 3-4), first grade (ages 6-7), third grade (ages 8-10), sixth grade (ages 11-12) and college freshmen (ages 18-23) were interviewed with open-ended questions. The subjects were questioned extensively about 3 specific types of pain: an injury (skinned knee), a medical intervention (injection), and an illness (headache). Subjects were asked to describe each pain, tell why the pain hurt, and state the value of the pain. Their answers were then categorized and the categories ordered developmentally by experts in pediatric pain who were unaware of the children's ages. Then children's specific answers were given developmental scores. Multivariate analyses revealed that older children had more complex and precise understandings of pain, and this pattern differed by type of pain and by aspect of pain being considered. The subjects were also asked to report the frequency of their own pains and their parents' pain; parental and self-reported pains were closely related.     

Performance strategies of US Olympians in practice and competition

Until recently, no self‐report instruments have examined psychological skills use in both practice and competition. In light of the significant role of practice in sport performance outcomes, a need exists to measure these skills in both domains. This study was designed to investigate differences in performance strategies of US Olympians in both practice and competition. The Test of Performance Strategies was administered to 176 US participants in the 2000 Sydney Olympic Summer Games. Discriminant function analyses demonstrated significant differences between medalists and nonmedalists in both the competition and practice performance strategies. Furthermore, significant gender and age differences were identified for competition strategies only. The 16 subscales of the TOPS, with two exceptions, create an internally stable instrument with moderate predictive ability relative to quality of sport performance, gender, and age in this elite sample of athletes.     

Self‐awareness in Young Adults with Down Syndrome: I. Awareness of Down syndrome and disability

The limited literature on awareness of differences and stigma in people with intellectual disabilities is largely sociological, emphasises pathology, and has rarely used a developmental perspective with representative samples. Interviews, photographs and standardised tests were used to investigate such awareness with 77 young adults with Down syndrome and their parents. Awareness and social categorisation were significantly associated with verbal mental age, and closely approximated the typical social‐cognitive developmental sequence. No associations were found between awareness and chronological age, parent telling, gender, and mainstream experience. Only those with verbal mental ages from around 8 years were making relative social comparisons and beginning to form complex social categories of Down syndrome/disability. Around 13% were rated as showing a negative emotional reaction to Down syndrome/disability, and most of these were male. A similar percentage, mostly female and with higher verbal mental ages, discussed concerns and limitations. Even so, they all had high self‐esteem and awareness of Down syndrome and disability did not appear to be a major issue. A number of coping mechanisms to maintain a positive sense of self were suggested. It is argued that both sociological and developmental models are required to inform parent and professional attempts to facilitate self‐awareness.     

Relations between Executive Function and Academic Achievement from Ages 5 to 17 in a Large, Representative National Sample

This study examined age-related changes in complex executive function (EF) in a large, representative sample (N = 2,036) aged 5 to 17 using the Cognitive Assessment System (CAS; Naglieri & Das, 1997a). Relations between complex EF and academic achievement were examined on a sub-sample (N = 1,395) given the Woodcock-Johnson Tests of Achievement-Revised (Woodcock & Johnson, 1989). Performance on the three complex EF tasks improved until at least age 15, although improvement slowed with increasing age and varied some across tasks. Moreover, the different developmental patterns in the correlations between completion time and accuracy provide clues to developmental processes. Examination of individual achievement subtests clarified the specific aspects of academic performance most related to complex EF. Finally, the correlation between complex EF and academic achievement varied across ages, but the developmental pattern of the strength of these correlations was remarkably similar for overall math and reading achievement, suggesting a domain-general relation between complex EF and academic achievement.     

Opportunities for Professional Learning in Mathematics Teacher Workgroup Conversations: Relationships to Instructional Expertise

Increasingly, instructional improvement efforts include teacher communities as part of their overall strategy, yet the relationship between teachers’ talk and professional learning remains underspecified. Using a discourse perspective on learning, this article compares opportunities to learn (OTLs) in the collaborative conversations of 3 mathematics teacher workgroups. We examined the differences in OTLs in 17 hr of videotaped meetings from 3 groups at different levels of instructional accomplishment in secondary mathematics. Using mixed methods, we uncovered differences in the groups’ interactions and found that OTLs were not equally distributed. Instead, teacher groups whose active participants demonstrated the greatest facility with ambitious instruction also had the richest conversational OTLs. We interpret this as an accumulated advantage developmental story: Because collaborative work in teaching involves problem posing and the articulation of practice, teachers’ conceptions get built into the framing and discussion of pedagogical problems. Accomplished teachers are thus positioned to learn more from talking with colleagues. This analysis contributes to understanding of how OTLs are constituted in teacher workgroups, with implications for making better use of teacher collaboration for professional learning.     

Disadvantaged preschool children from rural areas: the importance of home practices and nursery attendance in the development of early literacy skills / Niños preescolares vulnerables de sectores rurales: importancia de las prácticas del hogar y la asistencia a jardín infantil en el desarrollo de habilidades de alfabetización temprana

Abstract

This research analyses the impact of home practices, sociodemographic variables (family income and parents’ education) and attendance at a formal education programme prior to the development of early literacy skills of 240 children (four years old) from rural and urban disadvantaged families starting nursery school in Chile. The results show that the development of literacy skills was higher in urban children. In rural areas, family practices (words games) and family income had the most predictive weight on the performance of children and no differences were found between those who attended a prior educational programme and those who remained at home; while in urban areas, programme attendance had the highest impact, so that children who remained at home attained a lower developmental level, similar to those of rural areas. The implications of these findings for educational practice and policy are discussed.     

Instruction Effect and Developmental Levels: A Study on Water-Level Task with Chinese Children Ages 9-17

This study investigated the effectiveness of instruction on spatial skills. It examined the effect of instruction of liquid horizontality on the performance on Piagetian Water Level Task (WLT) from a developmental perspective through two substudies. In Study 1, the WLT was administered to 256 boys and 230 girls of ages 9, 10, 12, 14, and 17 from Beijing, China, before and after instruction. The results indicate that the instruction effect was significant for the 6th (p < .05) and 8th graders (p < .001) but not for the 4th, 5th, and 11th graders. Study 2 examined instruction effect in contrast with practice effect. Participants were 69 boys and 52 girls of ages 9–14 from Beijing, China. The results indicate that children improve more on the WLT with the combination of instruction and practice than with practice alone (p < .01). The findings depict a relationship between cognitive development and instruction effect on the WLT.     

Field Dependence-Field Independence in 5- to 10-Year-Old Children

Abstract

A final random sample of 160 Provo, Utah, elementary school children ages 5 to 10, was included in a balanced cell format to investigate the effects of school as reflective of socioeconomic level, age, sex, and intelligence on performance on the Children’s Embedded Figures Test (CEFT), a measure of Witkin’s field-dependence-independence hypothesis appropriate for use with young children. Results implied that (1) there may be differences on criterion performance according to relative social class; (2) age is the single best predictor of criterion performance, as significant differences proceeding from relative field-dependence to greater field-independence with increasing age were found; (3) there is a similar developmental pattern to increase in verbal intellectual power and increase in relative field-independence when all ages are considered together; (4) there were no significant similarities between field-dependence-independence and verbal intelligence within three of four specific ages investigated; (5) no sex differences in criterion performance were found.     

演唱的谐调及美感分析

演唱艺术的审美是多侧面的,是综合性的体现,要求演员具备一些相应的综合素质。然而,所有日积月累形成的专业素质和能力,都要通过舞台上短暂的演和唱的良好协调传达给观众。这种能力只有演员经过长期的学习和实践不断加强和完善,使之得到平衡、协调的发展,才能提高整体的艺术审美层次。     

Cross-sectional comparisons of the mathematical performance of children with learning disabilities: are we on the right track toward comprehensive programming?

This study examines the mathematical performance of 220 children from 8 years through 17 years of age diagnosed as having learning disabilities. Student records were searched for data indicating performance on standardized test instruments relating to mathematics. Data for the Woodcock-Johnson Psycho-Educational Achievement Battery math subtests and for the IQ scores from the Wechsler Intelligence Scale for Children-Revised were obtained. Comparisons were made among children at different ages and among specific age clusters. Primary attention was directed toward calculations and applications of math concepts and principles. Developmental patterns across the ages studied were discovered. Implications for long-term comprehensive programming are presented.     

科学英才的机构迁移与大学竞争力的关系

文章以汤姆森高引用科学家数据库中2430名高被引科学家为样本,以上海交通大学ARWU排名为大学竞争力的依据,对科学英才的机构迁移与大学竞争力的关系进行分析发现:竞争力越强的大学汇集的科学英才数量越多;大学竞争力越强,从校外招聘的科学英才比例越低;且大学竞争力越强,科学英才留下来的可能性越大。同时针对中国研究型大学师资队伍建设中存在的问题提出如下建议:加强世界一流大学建设,优化人才引进的环境;注重研究生教育质量,提高自我培育高水平师资的能力。