排序方式： 共有8条查询结果，搜索用时 250 毫秒
1
1.
Two experiments examined the role of analogy inthe development of a situation model of atarget passage. Specifically, we examinedwhether an analogous source text could improvecomprehension and inferencing about causalmechanisms in the target. An ``analogy group'studied a fictional pseudo-scientific passageunder the guidance of an analogous passage(also fictional) which shared causal structureswith the target. A ``statement group' studiedthe target under the guidance of an abstractstatement that characterized the target causalstructures. A ``target-only group' received noadditional material. All groups received tasksthat assessed their representation of thetarget. In Experiment 1 (N = 92) participantswere asked to list the most important objectsand relations in the passage. In Experiment 2(N = 80) participants were directly asked aboutthe target causal structures. In bothexperiments, responses of analogy subjects weremore likely to include given and inferredinformation that comprised the target causalmechanisms. Analogies in which a sourcepassage models causal mechanisms correspondingto those of a target passage appear to promotebetter representation of the details of targetcausal mechanisms, allowing a more fullydeveloped situation model of the target. 相似文献
2.
James D. George Danielle I. Bradshaw Annette Hyde Pat R. Vehrs Ronald L. Hager Frank G. Yanowitz 《Measurement in physical education and exercise science》2013,17(3):149-160
The purpose of this study was to develop an age-generalized regression model to predict maximal oxygen uptake (VO2max) based on a maximal treadmill graded exercise test (GXT; George, 1996). Participants (N?=?100), ages 18–65 years, reached a maximal level of exertion (mean?±?standard deviation [SD]; maximal heart rate [HRmax]?=?185.2?±?12.4 beats per minute (bpm); maximal respiratory exchange ratio [RERmax]?=?1.18?±?0.05; maximal rating of perceived exertion (RPEmax)?=?19.1?±?0.7) during the GXT to assess VO2max (mean?±?SD; 40.24?±?9.11 mL·kg?1·min?1). Multiple linear regression generated the following prediction equation (R?=?.94, standard error of estimate [SEE]?=?3.18 mL·kg?1·min?1, %SEE?=?7.9): VO2max (mL·kg?1·min?1)?=?13.160?+?(3.314 × gender; females?=?0, males?=?1) ? (.131 × age) ? (.334 × body mass index (BMI))?+?(5.177 × treadmill speed; mph)?+?(1.315 × treadmill grade; %). Cross validation using predicted residual sum of squares (PRESS) statistics revealed minimal shrinkage (Rp ?=?.93 and SEE p ?=?3.40 mL·kg?1·min?1); consequently, this model should provide acceptable accuracy when it is applied to independent samples of comparable adults. Standardized β-weights indicate that treadmill speed (.583) was the most effective at predicting VO2max followed by treadmill grade (.356), age (?.197), gender (.183), and BMI (?.148). This study provides a relatively accurate regression model to predict VO2max in relatively fit men and women, ages 18–65 years, based on maximal exercise (treadmill speed and grade), biometric (BMI), and demographic (age and gender) data. 相似文献
3.
Although many appeals for reform include adopting more student-centred assessment, few studies have examined the postsecondary classroom. Using the 1993 and 1999 National Study of Postsecondary Faculty, the results of the current study revealed that faculty in the sciences were less likely to use student-centred assessment practices than faculty in non-sciences. Additionally, while faculty in the non-sciences showed a significant increase in their use of student-centred assessment between the two waves of data collection, no such increase was obtained for faculty in the sciences. Results are discussed in terms of public policy. 相似文献
4.
Journal of Science Education and Technology - A science summer camp is a popular type of informal science experience for youth. While there is no one model of a science camp, these experiences... 相似文献
5.
Yanowitz Karen L. Vanderpool Staria S. 《Journal of Science Education and Technology》2004,13(3):353-359
Many science education programs have recently been developed to increase girls' participation in science, however, few formal evaluations of these types of programs have been reported. The present research evaluated fifth grade girls' perceptions of a 1-day science education program. Students attended workshops describing different science fields. Study 1 revealed that attending the workshops increased students' interest in the specific field covered in the workshop. However, even after attending the workshops, students did not believe women typically entered those various fields. A second year evaluation revealed that most students agreed they had learned about individual tasks that scientists do in the various fields. However, significantly fewer believed they learned about educational requirements, problems women might face in the field, or how science can be used to help people. Results are discussed in terms of potential factors that workshop presenters might want to consider in future programs. 相似文献
6.
Journal of Science Education and Technology - 相似文献
7.
OBJECTIVE: Teachers' expectations about the effects of physical and emotional abuse on children's classroom behaviors were examined in this study. Not only do teachers have to decide if a particular child is the victim of abuse, they may also have to contend with changes in that child's classroom behavior. METHOD: Teachers generated what they thought were typical outcomes of physical and emotional abuse on children's classroom behavior. RESULTS: Responses generally fell into the following categories: lowered self-esteem, heightened aggression, academic difficulties, and poor social interaction skills. Teachers who mentioned lowered self-esteem were more likely to generate it as the result of emotional abuse rather than physical abuse. CONCLUSIONS: Teachers' expectations generally mirrored research findings as to the actual effects of child abuse. Suggestions are made to incorporate the results in training programs designed to increase teachers' self-confidence in reporting potential cases of child abuse. 相似文献
8.
Bradshaw DI George JD Hyde A LaMonte MJ Vehrs PR Hager RL Yanowitz FG 《Research quarterly for exercise and sport》2005,76(4):426-432
The purpose of this study was to develop a regression equation to predict maximal oxygen uptake (VO2max) based on nonexercise (N-EX) data. All participants (N = 100), ages 18-65 years, successfully completed a maximal graded exercise test (GXT) to assess VO2max (M = 39.96 mL x kg(-1) x min(-1), SD = 9.54). The N-EX data collected just before the maximal GXT included the participant's age; gender; body mass index (BMI); perceived functional ability (PFA) to walk, jog, or run given distances; and current physical activity (PA-R) level. Multiple linear regression generated the following N-EX prediction equation (R = .93, SEE = 3.45 mL x kg(-1) x min(-1), % SEE = 8.62): VO2max (mL x kg(-1) x min(-1)) = 48.0730 + (6.1779 x gender; women = 0, men = 1) - (0. 2463 x age) - (0.6186 x BMI) + (0.7115 x PFA) + (0.6709 x PA-R). Cross validation using PRESS (predicted residual sum of squares) statistics revealed minimal shrinkage (R(p) = .91 and SEE(p) = 3.63 mL x kg(-1) x min(-1)); thus, this model should yield acceptable accuracy when applied to an independent sample of adults (ages 18-65 years) with a similar cardiorespiratory fitness level. Based on standardized beta-weights, the PFA variable (0.41) was the most effective at predicting VO2max followed by age (-0.34), gender (0.33), BMI (-0.27), and PA-R (0.16). This study provides a N-EX regression model that yields relatively accurate results and is a convenient way to predict VO2max in adult men and women. 相似文献
1