Information recall of younger and older skilled athletes: The role of display complexity,attentional resources and visual exposure duration

This study was concerned with the interactive role of experience of athletic skill with other relevant environmental variables (display complexity, attentional resources, exposure time of stimuli) on perception (recall) of structured handball game situations. Nineteen experienced (older) and 19 less experienced (younger) handball players were assigned randomly either to ball‐bouncing (diverted attention) or to calm seated (focused attention) conditions. In each of the two conditions, the subjects were exposed to a total of 36 slides containing 2–3, 5–6 and 8–10 players. Eighteen slides were exposed for 0.5 s and 18 for 1.0 s. All the slides contained structured defence and offence situations. Recall scores were subjected to repeated‐measures ANOVA using attention condition and age as between‐subject factors and task complexity and exposure duration as within‐subject factors. The results showed that the recall of less experienced players deteriorated more than the recall of more experienced players following exposure to complex displays (≥ 8 players) while engaging in a secondary task (bouncing). The findings suggest that research paradigms should be applied in the field of sport which share both ecological validity and a potential to discover the cognitive substrates underlying experience and age in skilled motor performance.     

Baumgartner's Modified Pull-Up Test For Male and Female Elementary School Aged Children

Abstract

Nineteen college men and women (aged 18–23 yrs, × = 21.1) were studied to ascertain the force-time components of a rapid maximal voluntary isometric contraction (MVC) for ankle dorsiflexors, knee extensors, elbow flexors, wrist flexors and hand grip. Standardized isometric strength testing protocol was used. After a practice period subjects were instructed to make an MVC without jerking and as quickly as possible, for each of the muscle actions noted above. Force readings were taken from a load cell assembly through an analogue-to-digital converter and analyzed to yield time values for MVC, 3/4 MVC, 1/2 MVC, and 1/4 MVC. The results indicated significant differences (p < .01) between the responses of the men and women, with the women reaching full MVC more rapidly than the men. Also, there were significant differences among the five muscle groups tested, with the wrist flexor muscle group developing MVC most quickly, while the knee extensors took the longest time to full MVC. Based upon these data it may be concluded that the time to full MVC differs between men and women, and also that the time to full MVC differs among the five muscle groups tested in this experiment.     

Infant Affective Reactions to the Resumption of Maternal Interaction after the Still-Face

To investigate infants' reactions to the Face-to-Face Still-Face Paradigm and in particular the reunion episode, 50 6-month-olds' affective, behavioral, and physiologic reactions were recorded and analyzed. Infants reacted to the still-face with negative affect, a drop in vagal tone, and an increase in heart rate. By contrast, they reacted to the reunion episode with a mixed pattern of positive and negative affect. There was a carryover of negative affect from the still-face, an increase in fussiness and crying, and a rebound of positive affect. During this episode, the infants' heart rate and vagal tone returned to initial levels. The data indicate that infant affective displays are specifically related to different interactive events, but that their physiologic reactions do not show the same level of specificity. The findings also highlight the complexity of the affective and reparatory processes that take place in mother-infant interactions.     

The methods of science … and those by which we live

The essays in this symposium were originally presented as the opening panel at the fifth national conference of the National Association of Scholars titled “Objectivity and Truth in the Natural Sciences, the Social Sciences, and the Humanities.” The conference took place in Cambridge, Massachusetts, from 11 to 13 November 1994.     

Paulo and the Birds: Towards a Magical Realist Approach to Ethnography

This article explores how magical realism can be used as an analytic to study culture. I propose a magical realist epistemology that seeks to dismantle binaristic impulses by allowing for competing notions of reality to co-exist. This displacement of Western notions of “truth” compels Western ethnographers and their readers to imagine an alternative world where the magical and the mundane are mutually sustaining.     

The influence of clothing on perceptions of infant sex roles

This paper reports an evaluation of presentation skills training for participants from manufacturing, service, production, and research organizations using a repeated‐measures quasi‐experimental comparison‐group design. In addition to posttest assessments of participants’ reactions and learning, participants’ self reports of sixteen behavioral skills were assessed across three time periods. Similar analyses were employed to test for co‐workers’ ratings of program participants’ long‐term improvement. Statistical analyses of participants’ responses (controlling for the number of comparisons) revealed positive reactions to the training, improvement in learning, as well as short‐term behavioral change in eight of the sixteen skills taught. Long‐term change was found in seven of the dependent measures. On‐the‐job change was found in three skills. Taken together, improvement was found in all but two of the skills areas in the training. Analyses of co‐workers’ ratings of participants’ skills also revealed that trainees had improved on twelve of the sixteen presentation skills after the program.     

论京剧声腔源于陕西

关于京剧声腔的起源,过去一般认为是二黄调和西皮调在北京合体而成,本文认为这个观点缺乏事实依据,京剧声腔的产地不是安徽或湖北,而是陕西,陕西历史上存在前后两个秦腔,前秦腔即陕西二黄(又称汉调二黄,今称陕西汉剧)早在乾隆55年四大徽班进京之前已广泛流传于北京和东南各地,四大徽班中的三庆班,春台班进京所唱的腔调主要是前秦腔;细考京剧与陕西二黄的声腔,二者确实同类.京剧的声腔是从陕西二黄的母体中孕育出来的.     

沉睡的天使

曾经的＂96黄金一代＂正在慢慢从舞台的中央移向大幕之侧,即使曾经无所不能的科比,本赛季也明显露出了疲态。小奥从来都不是这一代中的顶尖球员,现在伤病又无情地袭扰着他,不轰轰烈烈却绵绵长长。但小奥尼尔这位沉睡的天使,终有一天会回复青春。