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1.

Confidence assessment (CA) involves students stating alongside each of their answers a confidence rating (e.g. 0 low to 10 high) to express how certain they are that their answer is correct. Each student’s score is calculated as the sum of the confidence ratings on the items that they answered correctly, minus the sum of the confidence ratings on the items that they answered incorrectly; this scoring system is designed to incentivize students to give truthful confidence ratings. Previous research found that secondary-school mathematics students readily understood the negative-marking feature of a CA instrument used during one lesson, and that they were generally positive about the CA approach. This paper reports on a quasi-experimental trial of CA in four secondary-school mathematics lessons (N = 475 students) across time periods ranging from 3 weeks up to one academic year, compared to business-as-usual controls. A meta-analysis of the effect sizes across the four schools gave an aggregated Cohen’s d of –0.02 [95% CI –0.22, 0.19] and an overall Bayes Factor B01 of 8.48. This indicated substantial evidence for the null hypothesis that there was no difference between the attainment gains of the intervention group and the control group, relative to the alternative hypothesis that the gains were different. I conclude that incorporating confidence assessment into low-stakes classroom mathematics formative assessments does not appear to be detrimental to students’ attainment, and I suggest reasons why a clear positive outcome was not obtained.

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2.
Older people who are living with dementia often need healthcare, including hospital admissions, due to additional health conditions. Caring for older people who are living with dementia is, therefore, a core nursing role. This study investigated student nurses’ expectations of, and confidence about, caring for older people with dementia and the effect of students’ age, precourse experience, and their academic year. The design was a cross-sectional survey using questionnaires to collect data. The participants (n = 328), based at one university in England, had all had at least one practice learning placement. Most student nurses (n = 202; 62%) had precourse contact with older people with dementia and had cared for them during the course (n = 291; 89%). The student's academic year significantly affected confidence about caring for older people with dementia (p = .006), but still only 52% (n = 26) of third-year students felt “generally confident.” Precourse contact with older people with dementia had a significant impact on expectations (p = .001) and confidence in caring for people with dementia (p = .002). Students who were >25 years were significantly more likely to have had precourse contact with older people with dementia (p = < .001). Nurse educators should ensure that students entering nurse education appreciate that caring for older people who are living with dementia will be a core part of their role. They must proactively prepare nursing students to care for people with dementia, recognizing that some students have no previous contact, which may affect their confidence and experiences.  相似文献   

3.
Fit indexes are an important tool in the evaluation of model fit in structural equation modeling (SEM). Currently, the newest confidence interval (CI) for fit indexes proposed by Zhang and Savalei (2016) is based on the quantiles of a bootstrap sampling distribution at a single level of misspecification. This method, despite a great improvement over naive and model-based bootstrap methods, still suffers from unsatisfactory coverage. In this work, we propose a new method of constructing bootstrap CIs for various fit indexes. This method directly inverts a bootstrap test and produces a CI that involves levels of misspecification that would not be rejected in a bootstrap test. Similar in rationale to a parametric CI of root mean square error of approximation (RMSEA) based on a noncentral χ2 distribution and a profile-likelihood CI of model parameters, this approach is shown to have better performance than the approach of Zhang and Savalei (2016), with more accurate coverage and more efficient widths.  相似文献   

4.
We compare the accuracy of confidence intervals (CIs) and tests of close fit based on the root mean square error of approximation (RMSEA) with those based on the standardized root mean square residual (SRMR). Investigations used normal and nonnormal data with models ranging from p = 10 to 60 observed variables. CIs and tests of close fit based on the SRMR are generally accurate across all conditions (even at p = 60 with nonnormal data). In contrast, CIs and tests of close fit based on the RMSEA are only accurate in small models. In larger models (p ≥ 30), they incorrectly suggest that models do not fit closely, particularly if sample size is less than 500.  相似文献   

5.
abstract This study investigates the extraction of information by 13 and 14 year old children (n= 120) from four different pictures displaying ecological topics. The pictures were reproduced as coloured or monochrome and photographs or line drawings. The children perceived significantly more from photographs than from line drawings and from coloured than from monochrome pictures, even after the exclusion of colour‐specific items. The results are discussed with reference to the role of colour in enhancing figure‐ground quality and the effect of colour as a distractor. Evidence is also presented which suggests that the higher scores made with photographs are related to the general ability of the child. This result is discussed in terms of the possible motivational and cognitive effects of complex pictures.  相似文献   

6.
One challenge in mediation analysis is to generate a confidence interval (CI) with high coverage and power that maintains a nominal significance level for any well-defined function of indirect and direct effects in the general context of structural equation modeling (SEM). This study discusses a proposed Monte Carlo extension that finds the CIs for any well-defined function of the coefficients of SEM such as the product of k coefficients and the ratio of the contrasts of indirect effects, using the Monte Carlo method. Finally, we conduct a small-scale simulation study to compare CIs produced by the Monte Carlo, nonparametric bootstrap, and asymptotic-delta methods. Based on our simulation study, we recommend researchers use the Monte Carlo method to test a complex function of indirect effects.  相似文献   

7.
《师资教育杂志》2012,38(3):285-294
Abstract

Confidence in subject matter knowledge, in teaching ability and actual subject matter competence of 157 Grade 7–9 teachers, who participated in three summer inservice courses for mathematics teachers was measured. Results were consistent across courses: (1) inservice participation strengthened both mathematical competence and feelings of self‐confidence; (2) teachers lacking confidence in knowledge were those who lacked confidence in teaching ability; and (3) self‐confidence and actual subject competence were only partially interrelated.  相似文献   

8.
Confidence intervals are often misinterpreted. This article describes an activity which helps students understand what it means to have confidence in a Process.  相似文献   

9.
Infants’ transfer of information from pictures to objects was tested by familiarizing 9‐month‐olds (N = 31) with either a color or black‐and‐white photograph of an object and observing their preferential reaching for the real target object versus a distractor. One condition tested object recognition by keeping both objects visible, and the other tested object representation by hiding both objects. On visible trials, infants reached more for the distractor, indicating they recognized the target object from its picture. On hidden trials, infants reached more for the target object, suggesting they formed a continued representation of the object based on its picture. Photograph color had no effect. Infants thus show picture‐to‐object transfer by 9 months with preferential reaching, even with black‐and‐white pictures.  相似文献   

10.
We report on the construction and application on an instrument entitled the “Science Achievement Influences Survey” to assess combined effects of student attitudes about science, peer interaction, and home support, and the frequency of student‐centred and teacher‐centred instructional practices on student achievement. Controlling for pre‐test content knowledge, results indicated that student‐centred teaching practices have a positive association with student achievement (p < .01; i.e., group experiments) and a negative association with teacher‐centred teaching practices (p < .01; i.e., copying notes). Additionally, student attitudes about science were positively associated with student‐centred teaching practices (p < .01) and negatively associated with teacher‐centred teaching practices (p < .01). Most significantly, this study documents the predicted gains in science achievement associated with frequency of specific instructional practices used by middle‐school science teachers. Especially noteworthy and significant is the finding that near‐daily implementation of group experiments and reduction of extensive note‐copying during class yield the greatest positive impact on student achievement. Outside of school, peer interaction and home support were not significantly associated (p > .05) with student achievement. The student sample included 611 middle‐school science students with a wide range of socioeconomic and cultural backgrounds.  相似文献   

11.
This study focused on the development and application of a three‐tier multiple‐choice diagnostic test (or three‐tier test) on the nature and propagation of waves. A question in a three‐tier test comprises the content tier, which measures content knowledge; the reason tier, which measures explanatory knowledge; and the confidence tier, which measures the strength of conceptual understanding of the respondents. This paper presents results based on the responses of 243 Grade 10 students after they were formally instructed on the topic. The vast majority of the respondents showed an inadequate grasp of concepts about waves. Eleven alternative conceptions (ACs), which were expressed with confidence by more than 10% of the students, were identified; four of these ACs were expressed with high confidence.  相似文献   

12.
Background: Incentives have been proposed as a method to improve attendance in adult literacy classes. In the UK, several areas have piloted the use of incentives to promote attendance at adult literacy classes. To date no rigorous evaluation of this policy has been undertaken. This paper describes (as far as we are aware) the only UK‐based randomised controlled trial to evaluate the use of financial incentives in order to promote attendance in classes for adult learners.

Methods: We used a cluster‐randomised design. Twenty‐nine adult literacy classes were randomised in two groups using minimisation. Intervention group learners received £5 (US$10) for each class attended. The main outcome was class attendance; the secondary outcome was literacy scores.

Results: After allocation, one class was found to be ineligible for the study. In the 28 remaining classes there was a statistically significant reduction of about 1.5 sessions (95% confidence interval (CI) 0.28, 2.79; p = 0.019) attended by the intervention group compared with control, after adjusting for cluster size and baseline scores. The difference in reading scores between the intervention and control group, conditioned on baseline scores, was ?2.38 (with controls scoring higher than the intervention group), but this difference was not statistically significant (95% CI ?7.40 to 2.57, p = 0.33).

Conclusion: Payments to attend adult literacy classes had an adverse effect on attendance. This trial needs urgent replication, ideally with a larger incentive, before this approach is widely used by policy makers.  相似文献   

13.
This paper takes a sideways look at the controversial topic of educational assessment, raising the question: what place should the success/failure distinction have in an effective and humane educational system? Though the experience of failure may undermine the self‐esteem that is conducive to learning, its possibility is clearly important educationally. Instead of asking whether teachers should be truthful about children’s achievements or dishonestly promote their self‐esteem, we need to recognise a certain logical indeterminacy about what young children can do. Given this, it is reasonable to presume in favour of many of their capacities rather than against them, for this is how children develop the confidence to act. This includes the confidence to fail as well as the confidence to succeed. It is argued that both are crucial for learning.  相似文献   

14.
This study presents the results of a meta‐analytic study about the effects of digital game‐based learning (DGBL) on vocabulary. The results of the study showed that the effects of DGBL on vocabulary learning may vary with game design features (Q = 5.857, df = 1, p = .016), but not with learners' age (Q = 0.906, df = 1, p = .341) or linguistic background (Q = 0.0001, df = 1, p = .994). In light of the research findings, Csikszentmihalyi's ( 1990 ) Flow Theory was adopted to theorize the role of game design in DGBL. It is proposed that a hierarchy should exist on the “challenge” axis in the Flow Theory, with adventure‐oriented games above non‐adventure‐based games along the “challenge” axis. The theoretical underpinning is that the dynamic equilibrium between challenge and abilities can function independently of the effects of learners' age and linguistic background.  相似文献   

15.
Consumer confidence and trust, as it relates to the food system, is one of the most sensitive areas within consumers’ understanding of food. Surveys have shown that a large majority of people would like to learn more about agriculture and food manufacturing, with young people being among those most eager for more information about where their food comes from. Food‐focused educational resources often go unused due to teachers’ lack of familiarity with the subject area, the pressures of standardized testing, and lack of alignment to state content standards. Building on the success of the Hands On Classrooms platform that developed and validated curricula with high adoption rates by teachers and a demonstrated impact on student knowledge and self‐efficacy, a new curriculum on food system and food processing was developed and pilot tested. Two teachers from rural Virginia and Tennessee participated in the study. Both teachers received online professional development prior to implementation. Students were given pretests and posttests to measure (a) what impact does the curriculum have on students’ knowledge of food systems and processing and (b) to what extent does the curriculum have an impact on student's self‐reported skills related to these topics? A total of 87 students completed the assessments and showed significant improvements from pretest to posttest on both knowledge (p < .001) and skills (p < .001) related specifically to where food comes from and how it is processed, content that is typically not covered in middle school curriculum. Further research can be undertaken to measure the impact on others in different geographic and socioeconomic areas to provide additional data to validate the program.  相似文献   

16.
Children with severe learning difficulties who fail to begin word recognition can learn to recognise pictures and symbols relatively easily. However, finding an effective means of using pictures to teach word recognition has proved problematic. This research explores the use of morphing software to support the transition from picture to word recognition. Morphing software was used to teach word recognition to a group of eight children who were previously unable to recognise words. At the end of 16 teaching sessions, in a related design, the morphing technique was more effective than a word‐alone approach ( p < 0.05, one‐tailed). These results support the use of techniques such as symbol accentuation ( Miller & Miller, 1971 ) and challenge the concept that the use of pictorial information is inherently detrimental to learning in this context, in comparison to the repeated presentation of words alone. The recent advent of accessible morphing software removes previous barriers to this type of approach. The investigation highlights several useful avenues for future research, in particular, the use of mnemonic elements within morphing teaching methods.  相似文献   

17.
Employing a Wald confidence interval to test hypotheses about population proportions could lead to an increase in Type I or Type II errors unless the hypothesized value, p0, is used in computing its standard error rather than the sample proportion.  相似文献   

18.
New technologies enable flexible combinations of text and interactive or non-interactive pictures. The aim of the present study was to investigate (a) whether adding pictures to texts is generally beneficial for learning or whether it can also have detrimental effects, (b) how interactivity of pictures affects learning, (c) whether the visualization format of pictures affects the structure of the learner's mental model, and (d) whether the visualization format modifies the effects of interactivity. One hundred university students were randomly assigned to five groups. In four groups, a text about the different daytimes and days on the earth was combined with interactive or non-interactive pictures of different visualization formats. In the fifth group, the text was presented without pictures. According to the results, adding pictures to text was neither beneficial nor harmful for learning. In terms of learning efficiency, however, learning from text only was more successful than learning from text and pictures. Interactivity was beneficial for one learning task, but not for the other task. The visualization format affected participants’ interaction with pictures, but not the learning outcomes; however this effect was not influenced by interactivity. Implications for multimedia design and for further research are pointed out.  相似文献   

19.
Masculinity ideology is argued to be associated with academic outcomes. However, relatively few studies have examined these associations. This study examines the associations between masculinity ideology and academic skepticism, self‐presentation of low achievement, academic engagement, academic initiative, and self‐regulation, above and beyond academic self‐efficacy, among a diverse sample of urban youth. With a sample of 135 eighth‐grade students from a Northeastern middle school, 5 separate multiple hierarchical regression analyses were used to examine whether students’ endorsement of masculinity ideology predicted the criterion variables above and beyond academic self‐efficacy. The sample was comprised of 54 girls and 74 boys ages 12–14 years (M = 13.14; SD = .37). Results showed academic self‐efficacy significantly predicted academic engagement (B = 1.26; β = .53, p < .001; f2 = .39), academic initiative (B = .98; β = .37; p < .001, f2 = .16), and behavioral regulation (B = .61; β = .24; p < .05; f2 = .09) and explained an additional 8 and 10% of the variance in self‐presentation of low achievement (B = .54; β = .33; p = .001; f2 = .14) and academic skepticism (B = .56; β = .35; p < .001; f2 = .15), respectively, over and above academic self‐efficacy. Gender, which was dummy coded and entered as a covariate, only predicted self‐presentation of low achievement. Findings from this study point to the need to foster positive academic outcomes through bolstering academic self‐efficacy and, perhaps more important, addressing masculinity ideology.  相似文献   

20.
When analyzing incomplete data, is it better to use multiple imputation (MI) or full information maximum likelihood (ML)? In large samples ML is clearly better, but in small samples ML’s usefulness has been limited because ML commonly uses normal test statistics and confidence intervals that require large samples. We propose small-sample t-based ML confidence intervals that have good coverage and are shorter than t-based confidence intervals under MI. We also show that ML point estimates are less biased and more efficient than MI point estimates in small samples of bivariate normal data. With our new confidence intervals, ML should be preferred over MI, even in small samples, whenever both options are available.  相似文献   

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