Autoshaping of initial feeding and drinking reactions in newly hatched chicks     

Guy Woodruff  M. David Starr 《Learning & behavior》1978,6(3):265-272

Newly hatched chicks were force-fed food and water throughout rearing, and food, water, or sand reinforcers during exposure to an omission-training procedure. The chicks were thus prevented from performing approach and contact responses to the reinforcer at any time in their lives. Nevertheless, the subjects displayed approach and species-specific feeding or drinking reactions directed toward an illuminated key paired with food or water, but not with sand. Illumination of a key either uncorrelated or negatively correlated with food or water did not engender appreciable responding. Feeding and drinking reactions were topographically distinct, determined by the type of reinforcer, but were not elicited by the reinforcer. These findings support a “learned release” view of autoshaping, according to which phylogenetically preorganized behavior patterns are triggered by distal stimuli paired with biologically significant proximal stimulation, and suggest a close relationship between autoshaping and primitive instances of visual object recognition.  相似文献   

Laptop as Messenger: an Exploration of the Role of Portables in Home-School Liaison     

Guy Merchant  Moira Monteith 《Literacy》1997,31(2):23-26

Into the now substantial research into the use of word processing as a tool to develop children’s writing, the role of the laptop computer has recently added a fresh dimension. Such machines add flexibility and portability to classroom management and there are numerous questions about their impact. In this article Guy Merchant and Moira Monteith examine one possible benefit of the use of laptops, their potential for drawing together home and school and initiating and sustaining home-school dialogue.  相似文献   

Some recent Unesco publications     

Jacques vauclair  Jo?o Batista Araujo Oviveira  Guy Neave  Abdel Aziz Koussy 《Prospects》1976,6(2):306-309

Notes and Reviews

Some recent Unesco publications  相似文献   

Stress in elite sport performers: A comparative study of competitive and organizational stressors     

Sheldon Hanton  David Fletcher  Guy Coughlan 《Journal of sports sciences》2013,31(10):1129-1141

The purpose of this study was to compare the content and quantity of competitive and organizational stressors in elite athletes. Ten international performers were interviewed about sources of stress. Content analysis of the data involved categorizing the demands associated primarily and directly with competitive performance (#CS = 21) under the post hoc dimension “performance issues”, and the demands associated primarily and directly with the sport organization (#OS = 72) under one of the following four post hoc dimensions: “environmental issues”, “personal issues”, “leadership issues” and “team issues”. Frequency analysis revealed that the participants mentioned the competitive stressors (Σ = 95) less than the organizational stressors (Σ = 215). Further analysis within these categories showed that the mean number of participants citing individual competitive stressors (M = 4.52) was greater than the mean number of participants citing individual organizational stressors (M = 2.99). The findings indicate that elite athletes experience and recall more demands associated primarily and directly with the sport organization than with competitive performance. Furthermore, this population appears more likely to mention similar competitive stressors but varied organizational stressors, probably because the former are inherent and endemic to elite sport, whereas the latter are essentially extraneous and widely distributed.  相似文献   

Energy expenditure and dietary intake in professional football players in the Dutch Premier League: Implications for nutritional counselling     

Naomi Y.J. Brinkmans  Nick Iedema  Guy Plasqui  Loek Wouters  Wim H.M. Saris  Luc J.C. van Loon 《Journal of sports sciences》2013,31(24):2759-2767

ABSTRACT

Selecting effective dietary strategies for professional football players requires comprehensive information on their energy expenditure (EE) and dietary intake. This observational study aimed to assess EE and dietary intake over a 14-day period in a representative group (n = 41) of professional football players playing in the Dutch Premier League (Eredivisie). Daily EE, as assessed by doubly labelled water, was 13.8 ± 1.5 MJ/day, representing a physical activity level (PAL) of 1.75 ± 0.13. Weighted mean energy intake (EI), as assessed by three face-to-face 24-h recalls, was 11.1 ± 2.9 MJ/day, indicating 18 ± 15% underreporting of EI. Daily EI was higher on match days (13.1 ± 4.1 MJ) compared with training (11.1 ± 3.4 MJ; P < 0.01) and rest days (10.5 ± 3.1 MJ; P < 0.001). Daily carbohydrate intake was significantly higher during match days (5.1 ± 1.7 g/kg body mass (BM)) compared with training (3.9 ± 1.5 g/kg BM; P < 0.001) and rest days (3.7 ± 1.4 g/kg BM; P < 0.001). Weighted mean protein intake was 1.7 ± 0.5 g/kg BM. Daytime distribution of protein intake was skewed, with lowest intakes at breakfast and highest at dinner. In conclusion, daily EE and PAL of professional football players are modest. Daily carbohydrate intake should be increased to maximize performance and recovery. Daily protein intake seems more than adequate, but could be distributed more evenly throughout the day.  相似文献   

Gladiadores. El gran espectáculo de Roma     

Guy Chamberland 《国际体育史杂志》2013,30(2):399-401

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Defining and navigating ‘action’ in a Participatory Action Research project     

Batsheva Guy  Tziporah Feldman  Caroline Cain  Lauren Leesman  Chara Hood 《Educational Action Research》2020,28(1):142-153

ABSTRACT

While the ‘action’ portion of a Participatory Action Research (PAR) project is a crucial component of the process, action tends to be challenging to define, achieve, and measure. The current paper both defines and describes action within the context of a particular PAR collaboration and explores the process and challenges of navigating and implementing action in a PAR project. The specific PAR project detailed in this paper was executed within a higher education setting and involves a group of undergraduate women co-researchers studying their experiences in STEM (Science, Technology, Engineering, and Mathematics) fields.  相似文献   

Choosing a major in higher education: Profiles of students’ decision-making process     

Veerle Germeijs  Koen Luyckx  Guy Notelaers  Luc Goossens  Karine Verschueren 《Contemporary educational psychology》2012

This study identified decision-making profiles of students who make a choice of a major in higher education. These profiles were examined in a sample of Belgian students at the end of Grade 12, when the educational system expects that these adolescents choose a specific major. Using latent class cluster analysis on adolescents’ scores for coping with career decisional tasks (i.e., orientation, exploration, decisional status, and commitment), four clusters were identified. As expected, these profiles paralleled Marcia’s (1966) identity statuses (i.e., the achievement, moratorium, foreclosure, and diffusion status). Results provided support for the external validity of the identified clusters through differential associations with several person variables (i.e., career decision-making self-efficacy, career choice anxiety, and decision-making style) and with academic functioning in higher education (i.e., commitment, academic and social adjustment). Implications for current educational research and research on career decision-making are discussed.  相似文献   

(2) Nature,role and structure of an organization of national libraries     

Guy Sylvestre 《International Information and Library Review》2013,45(3):407-411

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An international structure for library education     

Guy A. Marco 《International Information and Library Review》2013,45(4):357-363

The training of information personnel at the middle level in Africa is discussed. The data were derived from the latest issues of the prospectuses of the library schools at the University of Ibadan and Botswana as well as a questionnaire designed to ascertain the characteristics of the trainees in both institutions. The study reveals that the curricula of both schools extend beyond preparing trainees for the techniques and processes of a library. The trainees in both schools have sufficient educational background and library/information work experience to enable them to manage the many one-man libraries scattered all over Africa effectively, after undergoing the diploma training. It is recommended that an amalgam of the curricula of both schools can be made the standard curriculum for any institution involved in a training programme for information personnel at this level.  相似文献