Fractionated Reaction Time Responses to Auditory and Electrocutaneous Stimuli     

Pamela J. Hoyes Beehler  Gary Kamen 《Research quarterly for exercise and sport》2013,84(4):298-307

Abstract

It is well documented that simple reaction time (RT) varies inversely with stimulus intensity, but there is disagreement as to which stimulus modality produces the fastest simple RT. An investigation was conducted to equate two stimulus modalities, auditory (A) and electrocutaneous (EC), using varying stimulus intensities in a simple RT protocol. A second investigation was then conducted to examine neuromotor characteristics of stimulus-evoked responses using previously equated A and EC stimuli of varying intensity from the first investigation. Results showed that RT, premotor time (PMT), and motor time (MT) were all inversely related to stimulus intensity, while maximum displacement (MAXD) was directly related to stimulus intensity, and movement time was not affected by stimulus intensity. We conclude that: (a) both central and peripheral components of RT are altered by varying stimulus intensities, and (b) rapid movements are enhanced by increasing stimulus intensity.  相似文献   

Teachers' Perspectives on the Challenges of Teaching Physical Education in Urban Schools     

Nate McCaughtry  Sara Barnard  Jeffrey Martin  Bo Shen  Pamela Hodges Kulinna 《Research quarterly for exercise and sport》2013,84(4):486-497

The purpose of this study was to analyze how the challenges of urban schools influence physical education teachers' emotional understanding and connections with their students and the implications on their teaching. Sixty-one elementary physical educators from an urban school district in the midwestern U.S. were interviewed multiple times (N = 136) over 3 years using interpretive methodology. Teachers reported five unique challenges that significantly shaped their thinking about students and their careers, along with strategies they used to overcome or manage those challenges. The challenges were: (a) insufficient instructional resources, (b) implementing culturally relevant pedagogy, (c) dealing with community violence, (d) integrating more games in curricula, and (e) teaching in a culture of basketball. Implications centered on the guilt-inducing nature of urban teaching, developing an informed and realistic vision of urban physical education, and the role of teacher preparation and professional development.  相似文献   

Efficacy of Fast ForWord training on facilitating acquisition of reading skills by children with reading difficulties—A longitudinal study     

Pamela E. Hook  Paul Macaruso  Sandra Jones 《Annals of dyslexia》2001,51(1):73-96

We explored the effects of Fast ForWord (FFW) training on reading and spoken language skills in children with difficulties in phonemic awareness and word identification. Gains were examined both immediately after treatment and over a period of two years. In the short term, children who received FFW training were compared to children who received Orton Gillingham (OG) training. The FFW group was also compared to a matched longitudinal control group (LC); all participants in the FFW and LC groups received similar multisensory structured language instruction over two academic years. The FFW and OG groups made similar gains in phonemic awareness. However, the children who received FFW training did not show significant gains in word identification or word attack whereas the children who received OG training made significant gains in word attack. Immediately after treatment, the FFW group showed significant gains in speaking and syntax, but these gains were not maintained over two years. The FFW group did not differ significantly from the LC group in any areas over the two years. Children in both groups made significant progress in phonemic awareness and reading.  相似文献   

Agencies,educators, communities and wildfire: partnerships to enhance environmental education for youth     

Martha C. Monroe  Heidi L. Ballard  Annie Oxarart  Victoria E. Sturtevant  Pamela J. Jakes  Emily R. Evans 《Environmental Education Research》2016,22(8):1098-1114

We studied seven programs that engage youth from 10 to 18 years old in wildfire risk reduction in their communities in the United States through in-depth interviews to examine the nature and role of community-school partnerships in resource-focused environmental education. While the programs use a variety of strategies, from Scout badge to summer school, they exhibit several common dimensions: they all engage youth in community projects; they all arise from partnerships between resource agencies, community organizations, and educators; they all began when people familiar with both wildfire and youth education saw an opportunity to improve the community and educate youth through action; and all partners are able to contribute to the common program yet retain their individual identity as they meet their own mission-based goals. We use themes and quotes to illustrate these common dimensions for establishing community-school partnerships that could build action competence through environment-based education projects.  相似文献   

Maternal Responses to Infant Distress: Linkages Between Specific Emotions and Neurophysiological Processes     

Nastassia J. Hajal  Pamela M. Cole  Douglas M. Teti 《Parenting, science and practice》2017,17(3):200-224

Objective. The goals of the current article were to test the presence of an association between mothers’ neural activity (measured by frontal cortical alpha asymmetry) and their specific emotions (measured by observed facial expressions) in response to infant distress and the moderation of this relation by mothers’ appraisal processes (measured by sense of parenting efficacy). Design. Mothers of 5- to 8-month-olds (n = 26) watched videos of their own infants expressing distress while their brain activity was recorded via electroencephalogram and their facial expressions were videotaped for later microcoding. Mothers also completed a questionnaire measure of parenting efficacy. Results. Greater neurophysiological withdrawal in response to infant distress videos, indexed by frontal alpha asymmetry, was associated with longer sad and tense expressions in mothers with average or below average parenting efficacy, but not in those with above average efficacy. Conclusions. Previous research showing that patterns of parents’ brain activity in response to child stimuli are associated with parenting behavior often interpret results in relation to parental emotion, but rarely measure specific concurrent emotions. The current study helps fill this gap in the literature by showing that maternal neurophysiological withdrawal (together with parenting efficacy) was associated with simultaneously measured facial expressions of negative emotion in response to infant distress stimuli.  相似文献   

Adolescents' and Parents' Conceptions of Parental Authority and Personal Autonomy   总被引：9，自引：0，他引：9  

Judith G. Smetana  Pamela Asquith 《Child development》1994,65(4):1147-1162

Conceptions of parental authority and ratings of adolescent-parent conflict were assessed in 68 sixth, eighth, and tenth graders and their parents. Boundaries of adolescent personal jurisdiction and conflict over these boundaries were examined. Participants judged the legitimacy of parental authority and rated the frequency and intensity of conflict regarding 24 hypothetical moral, conventional, personal, multifaceted (e.g., containing conventional and personal components), prudential, and friendship issues. Adolescents and parents agreed that parents should retain authority regarding moral and conventional issues. Parents treated multifaceted, friendship, prudential, and personal issues as more contingent on parental authority than did adolescents, based on conventional, prudential, and psychological reasons, whereas adolescents treated these issues as under personal jurisdiction, based on personal concerns. Personal reasoning and judgments increased with age. Multifaceted issues were discussed more than all other issues, but moral and conventional conflicts were more intense than all other conflicts. The findings are discussed in terms of previous research on parental authority and adolescent-parent conflict during adolescence.  相似文献   

Noncontingent and contingent no-choice intervals and concurrent performance     

Pamela G. Real  Sally L. Hobson 《Learning & behavior》1983,11(1):44-50

Pigeons responded to changeover-key concurrent variable-interval variable-interval reinforcement schedules while there were intervals during which the changeover key was inoperative (no-choice intervals). In Experiment 1, a multiple schedule on the changeover key signaled choice and no-choice intervals. All subjects showed near-perfect discrimination during initial discrimination training and rapid reacquisition of discrimination following contingency reversals. In Experiment 2, the onset of no-choice intervals was unsignaled and contingent on interchangeover time. The temporal distribution of changeover-key responses conformed to the temporal distribution of choice intervals. The results of both experiments suggest that changeover responding is modifiable as a function of its immediate consequences. The results of Experiment 2, in particular, suggest that time or some correlate of time since the last changeover response can determine subsequent changeover behavior.  相似文献   

Pathways to Undergraduate Research Experiences: a Multi-Institutional Study     

Duhita Mahatmya  Janet Morrison  Rebecca M. Jones  Pamela W. Garner  Shannon N. Davis  Jill Manske  Nancy Berner  Ann Johnson  Jayna Ditty 《Innovative Higher Education》2017,42(5-6):491-504

The positive impact of undergraduate research experiences on students’ post-secondary success is well-documented. However, these conclusions are drawn from undergraduate students who already participate; very little research has explored the pathways by which students enter these experiences. Using data from a multi-institutional survey, we examined students’ reasons for participating and differences across institutions and demographic groups. Overall, students cited social and experiential reasons as key motivators for participation and a perceived lack of research readiness as a key barrier. Differences were also found across academic year. Implications from this study address issues of access, preparation, and institutional policies around undergraduate research.  相似文献   

Innovations in science education: infusing social emotional principles into early STEM learning     

Pamela W. Garner  Nuria Gabitova  Anuradha Gupta  Thomas Wood 《Cultural Studies of Science Education》2018,13(4):889-903

We report on the development of an after-school and summer-based science, technology, engineering, and mathematics curriculum infused with the arts and social emotional learning content (STEAM SEL). Its design was motivated by theory and research that suggest that STEM education is well-suited for teaching empathy and other emotion-related skills. In this paper, we describe the activities associated with the development and design of the program and the curriculum. We provide expert-ratings of the STEAM and social emotional elements of the program and present instructor and participant feedback about the program’s content and its delivery. Our results revealed that infusing the arts and social emotional learning content into science education created a holistic STEM-related curriculum that holds potential for enhancing young children’s interest in and appreciation for science and its applications. The data also suggested that the program was well-developed and, generally well-executed. However, experts rated the STEAM elements of the program more positively than the SEL elements, especially with regard to sequencing of lessons and integration among the lessons and hands-on activities, indicating that program revisions are warranted.  相似文献   

Math fluency is etiologically distinct from untimed math performance, decoding fluency, and untimed reading performance: evidence from a twin study     

Petrill S  Logan J  Hart S  Vincent P  Thompson L  Kovas Y  Plomin R 《Journal of learning disabilities》2012,45(4):371-381

The authors examined whether math fluency was independent from untimed math and from reading using 314 pairs of school-aged twins drawn from the Western Reserve Reading and Math Projects. Twins were assessed through a 90-min home visit at approximately age 10 and were reassessed in their homes approximately 1 year later. Results suggested that the shared environment and genetics influenced the covariance among math fluency, untimed math measures, and reading measures. However, roughly two thirds of the variance in math fluency was independent from untimed math measures and reading, including reading fluency. The majority of this independent variance was the result of genetic factors that were longitudinally stable across two measurement occasions. These results suggest that math fluency, although related to other math measures, may also be a genetically distinct dimension of mathematics performance.  相似文献