TWO‐YEAR COLLEGE ATTRITION: DO STUDENT OR INSTITUTIONAL CHARACTERISTICS CONTRIBUTE MOST?     

Anne G. Gates  Don G. Creamer 《Community College Journal of Research & Practice》2013,37(1-4):39-51

This study examined certain effects of seven student pre‐enrollment characteristics and three student‐institutional characteristics on retention status. Path analysis of these longitudinal data was unable to compare favorably with other studies using similar determinants. Certain practical implications of the study also are presented, emphasizing the burden of evidence that suggests that entering student characteristics cannot be used alone to explain the retention decision, that retention programs should be strategically rather than generically focused, and that program holding power may be related to student career consciousness and goal specificity.  相似文献   

Retell as an Indicator of Reading Comprehension     

Deborah K. Reed  Sharon Vaughn 《Scientific Studies of Reading》2013,17(3):187-217

The purpose of this narrative synthesis is to determine the reliability and validity of retell protocols for assessing reading comprehension of students in grades K–12. Fifty-four studies were systematically coded for data related to the administration protocol, scoring procedures, and technical adequacy of the retell component. Retell was moderately correlated with standardized measures of reading comprehension and, with older students, had a lower correlation with decoding and fluency. Literal information was retold more frequently than inferential, and students with learning disabilities or reading difficulties needed more supports to demonstrate adequate recall. Great variability was shown in the prompting procedures, but scoring methods were more consistent across studies. The influences of genre, background knowledge, and organizational features were often specific to particular content, texts, or students. Overall, retell has not yet demonstrated adequacy as a progress monitoring instrument.  相似文献   

Personal inquiry learning trajectories in geography: technological support across contexts     

Lucinda Kerawalla  Karen Littleton  Eileen Scanlon  Ann Jones  Mark Gaved  Trevor Collins 《Interactive Learning Environments》2013,21(6):497-515

Student engagement in the design and implementation of inquiries is an effective way for them to learn about the inquiry process and the domain being studied. However, inquiry learning in geography can be challenging for teachers and students due to the complexity of scientific inquiry and the diversity of pupils' and teachers' knowledge and abilities. To address this, the Personal Inquiry project has designed a tool kit that includes nQuire, a Web-based tool to support students through the inquiry process. Here, we identify when, across five lessons comprising an inquiry into microclimates, nQuire was used by a teacher and a case study group of her 12 to 13-year-old students, and the ways in which they adopted nQuire as a tool to facilitate the creation of a coherent and cumulative inquiry learning experience over time. We found that students' use of nQuire supported them in capturing and representing their evolving understanding of inquiry, in defining and supporting their progression through the process of inquiry and in resourcing their cognitive engagement in data interpretation and representation. nQuire supported the students in accumulating and integrating new understandings across contexts and over time. In this way, nQuire successfully resourced and supported the students' learning journeys or trajectories. We conclude that nQuire can be an effective tool for supporting teachers' and students' understanding of the nature of inquiry and how to design and implement inquiries of their own.  相似文献   

Impact of age on host responses to diet-induced obesity:Development of joint damage and metabolic set points     

Kelsey H.Collins  Graham Z.MacDonald  David A.Hart  Ruth A.Seerattan  Jaqueline L.Rios  Raylene A.Reimer  Walter Herzog 《运动与健康科学(英文)》2020,9(2):132-139,197

Background:Osteoarthritis is one of the leading causes of pain and disability worldwide,and a large percentage of patients with osteoarthritis are individuals who are also obese.In recent years,a series of animal models have demonstrated that obesity-inducing diets can result in synovial joint damage(both with and without the superimposition of trauma),which may be related to changes in percentage of body fat and a series of low-level systemic inflammatory mediators.Of note,there is a disparity between whether the dietary challenges commence at weaning,representing a weanling onset,or at skeletal maturity,representing an adult onset of obesity.We wished to evaluate the effect ofthe dietary exposure time and the age at which animals are exposed to a high-fat and high-sucrose(HFS) diet to determine whether these factors may result in disparate outcomes,as there is evidence suggesting that these factors result in differential metabolic disturbances.Based on dietary exposure time,we hypothesized that rats fed an HFS diet for 14 weeks from weaning(HFS Weanling) would demonstrate an increase in knee joint damage scores,whereas rats exposed to the HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult) and rats exposed to a standard chow diet(Chow)would not display an increase in knee joint damage scores.Methods:Male Sprague-Dawley rats were fed either an HFS diet for 14 weeks from weaning(HFS Weanling) or an HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult).At sacrifice,joints were scored using the modified Mankin Criteria,and serum was analyzed for a defined subset of inflammatory markers(Interleukin-6,leptin,monocyte chemoattractant protein-1,and tumor necrosis factorα).Results:When the HFS Weanling and HFS Adult groups were compared,both groups had a similar percent of body fat,although the HFS Weanling group had a significantly greater body mass than the HFS Adult group.The HFS Weanling and HFS Adult animals had a significant increase in body mass and percentage of body fat when compared to the Chow group.Although knee joint damage scores were low in all 3 groups,we found,contrary to our hypothesis,that the HFS Adult group had statistically significant greater knee joint damage scores than the Chow and HFS Weanling groups.Furthermore,we observed that the HFS Weanling group did not have significant differences in knee joint damage scores relative to the Chow group.Conclusion:These findings indicate that the HFS Weanling animals were better able to cope with the dietary challenge of an HFS diet than the HFS Adult group.Interestingly,when assessing various serum proinflammatory markers,no significant differences were detected between the HTS Adult and HFS Weanling groups.Although details regarding the mechanisms underlying an increase in knee joint damage scores in the HFS Adult group remain to be elucidated,these findings indicate that dietary exposure time maybe less important than the age at which an HFS diet is introduced.Moreover,increases in serum proinflammatory mediators do not appear to be directly linked to knee joint damage scores in the HFS Weanling group animals but may be partially responsible for the observed knee joint damage in the adults over the very short time of exposure to the HFS diet.  相似文献   

Technology-enhanced learning: Rethinking the term,the concept and its theoretical background     

Don Passey 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(3):972-986

This theoretical paper is concerned with problematising the rethinking of theoretical backgrounds associated with one of the commonly used educational technology terms (fields)—technology-enhanced learning—in the wider context of scholarship. Examples will show that the term itself is now used beyond its apparent, stated scope, that it is used in a number of varied ways, and that this is in itself problematic. The ways in which the term is used will be identified, and from these a strategic categorisation to rethink the use of the single term in areas of scholarship (particularly research and teaching) will be proposed, offering terms specifically encompassing the realms in which technologies are being used. From this categorisation, it will be shown that each specific category is based on different conceptions related to or arising from practice. Consequently, ways that theoretical backgrounds should be considered will be explored in each case. While existing theoretical backgrounds enable conceptual underpinnings in some of those cases, in other cases it will be shown that there are currently no fully developed theories or limited theoretical frameworks available. The paper will conclude by identifying key research areas needed if we are to develop and take pertinent aspects of scholarship further forward.  相似文献   

The peritextual literacy framework: Using the functions of peritext to support critical thinking     

Melissa Gross  Don Latham 《Library & information science research》2017,39(2):116-123

The peritextual literacy framework (PLF) is a tool for accessing, evaluating, and comprehending the content of media using elements that frame the body of a work and mediate its content for the user. Paratextual elements are the focus of research in classification, bibliometrics, reader’s advisory work, and in studies of authorship and publication. However, paratextual theory is just beginning to be acknowledged in LIS. The PLF closes a gap in paratext theory by categorizing the functions of peritext into six types: production, promotional, navigational, intratextual, supplemental, and documentary. The PLF is unique that it provides both a framework for further research on peritext, as well as a pedagogical tool that supports teaching in the areas of information literacy, media literacy and analysis, critical thinking, reading, and media design and production.  相似文献   

Potentiation of responding on a VR schedule by a stimulus correlated with reinforcement: Effects of diffuse and localized signals     

Phil Reed  Todd R. Schachtman  Geoffrey Hall 《Learning & behavior》1988,16(1):75-82

In Experiment 1, rats were trained to leverpress on a variable ratio (VR) 30 schedule with a 500-msec delay between the reinforced response and food delivery. Subjects that experienced a signal during the delay responded faster than did control subjects that received the stimulus un-correlated with reinforcement. Higher response rates were obtained when the stimulus used to signal reinforcement was auditory rather than visual. Experiments 2 and 3 compared the effects of signaling reinforcement with either a localized or a diffuse light on responding maintained by VR schedules of reinforcement. Elevated response rates were observed with the diffuse stimulus, but the localized stimulus failed to produce such potentiation. Experiment 3 also examined the conditioned reinforcing power of localized and diffuse visual stimuli. These results are discussed with reference to (1) theories of selective association and sign tracking and (2) their implications for current theories of signaling reinforcement.  相似文献   

Differences in science students' view of ideal and actual role behavior according to success and gender     

Don Kauchak  Ken Peterson 《科学教学研究杂志》1983,20(6):565-570

Information about how success and gender affect students' views of ideal and actual classroom role behavior can help both researchers and teachers better understand classroom components such as achievement and curriculum. A 20-item double Q sort was used to measure differences in perceptions of high school science students according to letter grades and gender. Individual Q sort item rankings of 160 students were tested for significant differences according to letter grade received; item ratings were compared according to gender for 215 students. Differences in perception according to success were found for both ideal and actual behavior; 8 and 5 items, respectively, out of each 20-item sort were found to be significant at the p = < 0.05 level. No such overall patterns of difference in view were found between boys and girls, although three ideal student items and one actual self-report item were found to be significantly different at the p = < 0.05 level.  相似文献   

The student departure puzzle: do some faculties and programs have answers?   总被引：1，自引：1，他引：0  

P.A. Danaher  Don Bowser 《高等教育研究与发展》2008,27(3):271-280

University attrition prevention strategies are typically generic, centrally managed, whole of university strategies that have emerged from an examination of whole of university attrition data. This paper takes an intra‐organisational comparative approach, through the examination of faculty and program attrition rates of students who joined an Australian university in the first term of 2004. The faculty with the highest attrition had a rate two‐and‐a‐half times that of the faculty with the lowest rate, and in programs with 40 or more students enrolled the program with the highest attrition had a rate over five times that of the program with the lowest rate. The paper identifies five practical implications of these findings and concludes that investigating the causes of these differences will help in understanding student attrition. It also suggests that universities wishing to reduce student attrition may benefit from adopting integrated and situated strategies that take into account faculty and program differences.  相似文献   

Activity frames and complexity thinking: Honoring both public and personal agendas in an emergent curriculum     

Steve Collins  Anthony Clarke 《Teaching and Teacher Education》2008

This article which is largely conceptual in nature, explores the possibilities provided by embracing complexity thinking that are attentive to, but not confined by, externally imposed curriculum mandates while simultaneously honoring the interests and needs of individual students and the classroom collective. From this perspective, the ideas of negotiating authority, adopting a holistic view, engaging in participatory democratic practices, and using a project-based approach to learning are examined. In doing so, the concept of ‘activity frames’ is introduced and developed as a useful way of responding to curriculum mandates while being responsive to and respectful of individual and collective student learning agendas.  相似文献