Mother–Infant Vagal Regulation in the Face-To-Face Still-Face Paradigm Is Moderated by Maternal Sensitivity     

Ginger A. Moore  Ashley L. Hill-Soderlund  Cathi B. Propper  Susan D. Calkins  W. Roger. Mills-Koonce  and Martha J. Cox 《Child development》2009,80(1):209-223

Parents' physiological regulation may support infants' regulation. Mothers ( N = 152) and 6-month-old male and female infants were observed in normal and disrupted social interaction. Affect was coded at 1-s intervals and vagal tone measured as respiratory sinus arrhythmia (RSA). Maternal sensitivity was assessed in free play. Mothers and infants showed opposite patterns of RSA change. During disrupted interaction, mothers' RSA increased and infants' decreased, suggesting self-regulation of distress. During reunion, although the typical pattern was for infants to return to baseline levels, infants of sensitive mothers and sensitive mothers both showed a significant decrease in RSA from baseline. Mothers' and infants' physiological responses may be a function of mutual responsiveness.  相似文献   

The effects of a single reminder trial on retention of a motor skill     

Fairbrother JT  Shea JB 《Research quarterly for exercise and sport》2005,76(1):49-59

Two experiments investigated the effects of a single reminder trial on immediate and delayed retention. Experiment 1 determined if beneficial effects of a reminder trial were a function of task order immediate retention performance benefited only when the reminder trial was practiced in the first block of trials. Experiment 2 added a 24-hr delayed retention test to examine the long-term benefits of a reminder trial. Retention performance was enhanced over both delay intervals. The long-term effect extended previous research (Shea & Titzer, 1993) that documented effects after 10 min. The use of a single reminder trial established that intertask comparisons between multiple reminder trials were not a precondition for the reminder trial effect as postulated by Shea and Titzer.  相似文献   

Composition of practice: influence on the retention of motor skills     

C H Shea  R M Kohl 《Research quarterly for exercise and sport》1991,62(2):187-195

The purpose of these experiments was to investigate further the variable practice effect found by Shea and Kohl (1990). Experiment 1 was an initial attempt to determine the locus of the retention benefits demonstrated by subjects provided variable practice experiences. All groups received 20 acquisition blocks consisting of five test trials per block at a target of 150 N. The interval between test trials was either unfilled or filled, with additional trials consisting of the same target force, variable target forces, or practice on an unrelated motor task. The results indicated retention was not incremented (relative to an unfilled interval) by requiring subjects to perform an unrelated motor task in the intertest-trial interval. However, when the interest-trial interval was filled with practice on related motor tasks, retention was significantly improved. Experiment 2 assessed the impact of increasing the number of related motor tasks interpolated between test trials. The results indicated filling the intertest-trial interval with one motor task resulted in large retention benefits relative to an unfilled interval. Further increases in the number of related motor tasks (3) interpolated between test trials resulted in only modest increments to retention. The results were consistent with the elaboration perspective proposed by Shea and Zimny (1983). The elaboration perspective proposes that the simultaneous presence of related items in working memory facilitates interitem elaborative and distinctive processing that ultimately results in retention benefits.  相似文献   

Fishing for Future Ratings: Can a New Documentary Initiative Save CNN?     

Ginger E. Blackstone 《Visual Communication Quarterly》2018,25(2):106-117

After the ratings success of the documentary film, Blackfish, CNN launched a new documentary initiative branded as CNN Films. Looking back at the history of the documentary genre on broadcast and cable/satellite television, one can see that the medium has had a troubled past in terms of ratings generation, although there have been notable exceptions. Unfortunately for documentary enthusiasts, a number of channels that once embraced documentary programming have since abandoned the genre and replaced it with nonfiction reality shows. Incorporating expectancy-value theory, one can assess that in order for a documentary initiative to be a successful ratings generator, the content must build a high amount of expectation among viewers and deliver a high amount of value. But it has been quite difficult for programming executives to successfully predict which documentaries will generate the solid ratings they seek. Given these factors, this article argues that the CNN Films push is a risky move by CNN President Jeff Zucker, and it is doubtful that the strategy can deliver the ratings surge the embattled network needs to beat its competition.  相似文献   

Talent development,work habits,and career exploration of Chinese middle‐school adolescents: development of the Career and Talent Development Self‐Efficacy Scale     

Mantak Yuen  Norman C. Gysbers  Raymond M.C. Chan  Patrick S.Y. Lau  Peter M.K. Shea 《High Ability Studies》2010,21(1):47-62

This article describes the development of an instrument – the Career and Talent Development Self‐Efficacy Scale (CTD‐SES) – for assessing students’ self‐efficacy in applying life skills essential for personal talent development, acquisition of positive work habits, and career exploration. In Study 1, data were obtained from a large sample of Chinese middle‐school students (N=15,113) in Grades 7–9 in Hong Kong. The CTD‐SES is an 18‐item questionnaire with subscales containing items that address students’ orientations toward developing their own talents, acquiring and applying positive work habits, and exploring their career possibilities. Evidence is provided for internal consistency, temporal stability, and factor structure of the CTD‐SES. Goodness of fit statistics provided support for a three‐primary‐factor‐plus‐higher‐factor model, and this solution was used in the statistical analyses. The data also indicated that students with plans for university study reported significantly higher scores than those without on all three domains of career and talent development. In Study 2 (N=308) Grade 10 high‐ability students’ scores in CTD‐SES were correlated with scores in career decision self‐efficacy and academic performance. The development and validation of CTD‐SES is the first step toward investigating career exploration, work habits, and talent development among Asian middle‐school adolescents.  相似文献   

Designing interactive video materials for adult learners     

Katherine Sears Cennamo And  Ginger Wellbaker Dawley 《Performance Improvement》1995,34(1):14-19

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