Response to ‘Monotreme middle ear is not primitive for Mammalia’     

John R Wible  Sarah L Shelley  Shundong Bi 《国家科学评论(英文版)》2021,8(10)

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A study of laughter in science lessons     

Wolff‐Michael Roth  Stephen M. Ritchie  Peter Hudson  Victoria Mergard 《科学教学研究杂志》2011,48(5):437-458

Laughter is a fundamental human phenomenon. Yet there is little educational research on the potential functions of laughter on the enacted (lived) curriculum. In this study, we identify the functions of laughter in a beginning science teacher's classroom throughout her first year of teaching. Our study shows that laughter is more than a gratuitous phenomenon. It is the result of a collective interactive achievement of the classroom participants that offsets the seriousness of science as a discipline. Laughter, whereas it challenges the seriousness of science, also includes the dialectical inversion of the challenge: it simultaneously reinforces the idea of science as serious business. Furthermore, levels of intimacy, complicity, and solidarity between the teacher and her students were reproduced and transformed through their laughter in class. © 2011 Wiley Periodicals, Inc., Inc. J Res Sci Teach 48: 437–458, 2011  相似文献   

Parent–Child Math Talk About Fractions During Formal Learning and Guided Play Activities     

Sarah H. Eason  Geetha B. Ramani 《Child development》2020,91(2):546-562

This study examined parent–child math talk within three contexts (formal learning; guided play; unguided play) in order to identify characteristics of activities supporting high-quality math engagement. Seventy-two dyads of parents and 4- and 5-year-olds were observed using a set of toy foods; instructions and materials varied across conditions. Parents and children engaged in the most math talk in formal learning; guided play also yielded more math talk than unguided play. Parents rated the formal learning and guided play activities as equally supportive of math learning, but rated the guided play activity as more enjoyable than the formal learning activity. The findings have implications for how parents should be encouraged to support preschoolers’ math learning.  相似文献   

School psychologists and suicide risk assessment: Role perception and competency     

Kristen H. Erps  Sarah Ochs  Carl L. Myers 《Psychology in the schools》2020,57(6):884-900

As the second leading cause of death for adolescents, suicide is a major concern for school personnel. School psychologists' training in mental health makes them well-positioned to lead in suicide prevention efforts; however, studies have shown a lack of preparedness in crisis intervention and, more specifically, suicide risk assessment. This study surveyed practicing school psychologists (N = 92) to explore their perception of both their role and competency in suicide risk assessment. Suicide risk assessment was defined as a broad term pertaining to any measures taken in suicide prevention, intervention, or postvention. The majority of school psychologists reported having a primary role at the tertiary level (i.e., intervening with a student identified as needing help). Participants indicated lacking adequate graduate preparation; however, most participants were confident in their knowledge of suicide and suicide risk assessment and were comfortable identifying and intervening with a student who is suicidal. Implications for practice and directions for future research are discussed.  相似文献   

Partnering with school providers to codesign mental health interventions: An open trial of Act & Adapt in urban public middle schools     

Sarah K. Bearman  Abby Bailin  Erin Rodriguez  Alison Bellevue 《Psychology in the schools》2020,57(11):1689-1709

Schools are well positioned to provide access to youth mental health services, but implementing effective programs that promote emotional and behavioral functioning in school settings is complicated by the poor fit of interventions developed in research settings to complex school contexts. The current study formed a research–practice partnership with two urban public schools and mental health providers employed by those schools (N = 6, 100% female, 50% Black/African American, 50% White/Caucasian) in the adaptation of a depression prevention intervention, Act & Adapt. The intervention was modified by decreasing meeting time and streamlining session content, increasing flexibility, making intervention materials more similar to academic curriculum, and increasing the focus on managing disruptive behavior within group sessions. In an open trial, sixth-grade students (N = 22; 59% boys, 31% Hispanic, 22% Black/African American, 4% Asian, 30% White/Caucasian) at both schools who were identified as clinically “at risk” reported improvements from baseline to postintervention and at 1-year follow-up on measures of emotional and behavioral difficulties and coping strategies, with parallel results by caregiver report. The providers reported satisfaction with the intervention, and qualitative analyses of provider focus groups suggested both barriers and facilitators to research-practice collaborations to implement mental health interventions in schools.  相似文献   

Acute and chronic effects of foam rolling vs eccentric exercise on ROM and force output of the plantar flexors     

Anne A. G. Aune  Chris Bishop  Anthony N. Turner  Kostas Papadopoulos  Sarah Budd  Mark Richardson 《Journal of sports sciences》2019,37(2):138-145

Foam rolling and eccentric exercise interventions have been demonstrated to improve range of motion (ROM). However, these two modalities have not been directly compared. Twenty-three academy soccer players (age: 18 ± 1; height: 1.74 ± 0.08 m; body mass: 69.3 ± 7.5 kg) were randomly allocated to either a foam rolling (FR) or eccentric exercise intervention designed to improve dorsiflexion ROM. Participants performed the intervention daily for a duration of four weeks. Measurements of dorsiflexion ROM, isometric plantar flexion torque and drop jump reactive strength index were taken at baseline (pre-intervention) and at three subsequent time-points (30-min post, 24-hours post and 4-weeks post). A significant time x group interaction effect was observed for dorsiflexion (P = 0.036), but not for torque or reactive strength index. For dorsiflexion, there was a significant increase in both acute (30-min; P < 0.001) and chronic (4-week; P < 0.001) ROM for the eccentric group, whilst FR exhibited only an acute improvement (P < 0.001). Eccentric training would appear a more efficacious modality than foam rolling for improving dorsiflexion ROM in elite academy soccer players.  相似文献   

Running quietly reduces ground reaction force and vertical loading rate and alters foot strike technique     

Xuan Phan  Tiffany L. Grisbrook  Kevin Wernli  Sarah M. Stearne  Paul Davey 《Journal of sports sciences》2017,35(16):1636-1642

This study aimed to determine if a quantifiable relationship exists between the peak sound amplitude and peak vertical ground reaction force (vGRF) and vertical loading rate during running. It also investigated whether differences in peak sound amplitude, contact time, lower limb kinematics, kinetics and foot strike technique existed when participants were verbally instructed to run quietly compared to their normal running. A total of 26 males completed running trials for two sound conditions: normal running and quiet running. Simple linear regressions revealed no significant relationships between impact sound and peak vGRF in the normal and quiet conditions and vertical loading rate in the normal condition. t-Tests revealed significant within-subject decreases in peak sound, peak vGRF and vertical loading rate during the quiet compared to the normal running condition. During the normal running condition, 15.4% of participants utilised a non-rearfoot strike technique compared to 76.9% in the quiet condition, which was corroborated by an increased ankle plantarflexion angle at initial contact. This study demonstrated that quieter impact sound is not directly associated with a lower peak vGRF or vertical loading rate. However, given the instructions to run quietly, participants effectively reduced peak impact sound, peak vGRF and vertical loading rate.  相似文献   

Overcoming response bias using symbolic representations of number by chimpanzees (Pan troglodytes)     

Sarah T. Boysen  Kimberly L. Mukobi  Gary G. Berntson 《Learning & behavior》1999,27(2):229-235

We previously reported that chimpanzees were unable to optimally select the smaller of two candy arrays in order to receive a larger reward. When Arabic numerals were substituted for the candy arrays, animals who had had prior training with numerical symbols showed an immediate and significant improvement in performance and were able to select reliably the smaller numeric representation in order to obtain a larger reward. Poor performance with candy arrays was interpreted as reflecting a response bias toward the intrinsic incentive and/or perceptual features of the larger array. In contrast, the Arabic numerals represent numerosity symbolically and appear to promote response choice on the basis of abstract processing of numerosity, with minimal interference from the inherent properties of the choice stimuli. The present study tested the hypothesis that, for mixed symbol-candy choice pairs, the requisite processing of the abstract numeral may foster a mode of numerical judgment that diminishes the interfering incentive/perceptual effects of the candy stimuli. The results were consistent with this hypothesis. Whereas performance on candy-candy arrays was significantly below chance levels, performance on numeral-candy choice pairs was significantly above chance and comparable with performance on numeral-numeral pairs.  相似文献   

Hitting the vault board: implications for vaulting take-off--a preliminary investigation     

Coventry E  Sands WA  Smith SL 《Sports biomechanics / International Society of Biomechanics in Sports》2006,5(1):63-75

Gymnastics vaulting relies on a specialized take-off board for propulsion during the take-off phase of the vault. There is little information on the vault board and its behaviour. The aim of this study was to characterize the behaviour of the vault board during handspring drill take-offs of young male gymnasts (n = 36). The side of the top surface of the vault board and the wooden base were marked with three reflective markers, placed at the end of the vault board nearest the vault table and the centres of the two rearmost coil springs. The vault board surface was divided into two areas, rear and middle, based on marker location. The gymnasts' groups were determined from the location of the gymnast's lateral malleolus at vault board contact. Landings with the malleolus directly above or behind the rearmost marker were considered rear landings; landings with the malleolus forward of the rearmost marker were considered middle landings. Marker movements were automatically digitized and the right malleolus was hand digitized at 120 Hz. The maximum vertical displacement, vertical deflection time, and vertical velocity at take-off of the vault board markers did not differ statistically between board contact groups (all p > 0.05). The lateral malleolus velocity components also did not differ between board contact groups. Some low to moderately strong correlations were observed between the various marker displacements, durations and take-off velocities. Modest correlations were obtained between board markers and right malleolus velocities. The results indicate that foot contact on the vault board, as defined here, did not result in differences in board marker behaviour or right lateral malleolus velocities. This information does not support the idea that vault board contacts at the rear of the vault board are worse than contacts near the middle of the vault board. More research is needed to ascertain the role of the vault board's vibration characteristics to whole body actions that are observed in the subsequent preflight phase.  相似文献   

Muslims and Jews in Exempla Collections: A Case Study on Stephen of Bourbon's Tractatus de materiis praedicabilibus     

Sarah Lamm 《Al-Masaq: Islam & the Medieval Mediterranean》2009,21(3):301-314

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