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1.
Pigeons were trained to recall an arbitrary sequence on a delayed matching-to-successive-samples (DMTSS) task. Sample items were presented successively and then displayed simultaneously. Subjects were required to respond to them in the order in which they appeared. In Experiment 1, pigeons responded correctly on 75% of the trials on a two-item DMTSS task but at a chance level of accuracy on a three-item task. In Experiment 2, pigeons who learned to produce a three-item sequence prior to DMTSS training mastered a three-item DMTSS task at a 75% level of accuracy. Control groups, trained initially with the same items on nonserial tasks, performed as poorly on a three-item DMTSS task as the naive subjects of Experiment 1. It was hypothesized that pigeons that first learned to produce a three-item list were able to recall three-item samples in DMTSS because they had learned to represent three-item sequences.  相似文献   

2.
This study investigated whether two different versions of the serial rapid automatized naming (RAN) task, using similar alphanumeric stimuli, would differentially predict performance on word level reading skills (i.e., word recognition, nonword reading, and orthographic processing). To accomplish this, a subset of the Colorado Learning Disabilities Research Center twin sample (N = 307) was administered two different versions of serial RAN (traditional and alternative), and the relationship among these measures and word level reading skills was examined using an extension of multiple regression analysis known as dominance analysis (Budescu, 1993). The traditional RAN task (RAN-T) involved rapidly naming a visual array of 50 items, consisting of 5 symbols in a given category that are presented 10 times in random order in 5 rows (Denckla & Rudel, 1976). In the alternative RAN task (RAN-A), participants were presented with a similar set of 6 symbols in 5-item rows but asked to name as many items as possible in 15 sec. Results of dominance analysis indicate that the RAN-A measure explained significantly more unique variance in word recognition and orthographic-processing skills than the RAN-T task. In the case of word recognition skill, RAN-A was found to dominate RAN-T. Several explanations for this pattern of results across the two versions of RAN are explored.  相似文献   

3.
During a visual rhyming task, deaf participants traditionally perform more poorly than hearing participants in making rhyme judgements for written words in which the rhyme and the spelling pattern are incongruent (e.g. hair/bear). It has been suggested that deaf participants’ low accuracy results from their tendency to rely on orthographic similarity. To test this interpretation more directly, we compared profoundly and prelingually deaf, orally educated participants and hearing participants’ accuracy during a visual rhyming judgement task in which the two words of a pair share the orthographic rime, in order to discourage usage of a purely orthographic strategy. Accuracy was lower in deaf than in hearing participants. The gradient of difficulty between items, together with the finding of a significant correlation between accuracy and the consistency of the grapheme to rhyme, suggest that difference in accuracy between groups might be explained by an over regularization in deaf people, which is probably linked to less diversified phonological representations.  相似文献   

4.
Although memory performance benefits from the spacing of information at encoding, judgments of learning (JOLs) are often not sensitive to the benefits of spacing. The present research examines how practice, feedback, and instruction influence JOLs for spaced and massed items. In Experiment 1, in which JOLs were made after the presentation of each item and participants were given multiple study-test cycles, JOLs were strongly influenced by the repetition of the items, but there was little difference in JOLs for massed versus spaced items. A similar effect was shown in Experiments 2 and 3, in which participants scored their own recall performance and were given feedback, although participants did learn to assign higher JOLs to spaced items with task experience. In Experiment 4, after participants were given direct instruction about the benefits of spacing, they showed a greater difference for JOLs of spaced vs massed items, but their JOLs still underestimated their recall for spaced items. Although spacing effects are very robust and have important implications for memory and education, people often underestimate the benefits of spaced repetition when learning, possibly due to the reliance on processing fluency during study and attending to repetition, and not taking into account the beneficial aspects of study schedule.  相似文献   

5.
Tower of Hanoi has become a popular tool in cognitive and neuropsychology to assess a set of behaviors collectively referred to as executive functions. Substantial variability in performance on the Tower of Hanoi (TOH) disk-transfer task among normally functioning young adults, and potential contributions to these individual differences, were examined. In this expanded 60-problem version of the four-disk TOH, the degree to which problem administration (blocked vs. random) and strategy knowledge influenced overall performance and changes in accuracy across problems was examined. Eighty-seven college students were randomly assigned to a Blocked Group (problems given in ascending order of move-length) and a Random Group (problems given in a random order). After administration of the TOH task, participants described their problem solving and these verbal protocols were analyzed with regard to four elements of a strategic approach to problem solving. Problem administration order demonstrated no effect on task performance or on expressed strategy knowledge; however, strategy knowledge did predict performance on the TOH. An expected decrease in performance across trials was observed in the Blocked Group, and an increase in accuracy in the Random group indicated a learning effect. Strategy knowledge did not interact with these changes in performance across the items. These results suggest that external cues do not influence performance on the TOH to the same extent as individual differences in strategy induction relatively early in the problem solving process.  相似文献   

6.
We investigated if instruction on a Table of Specifications (TOS) would influence the quality of classroom test construction. Results should prove informative for educational researchers, teacher educators, and practising teachers interested in evidenced-based strategies that may improve assessment-related practices. Fifty-three college undergraduates were randomly assigned to an experimental (exposed to the TOS strategy) and a comparison condition (no specific strategy support) and given materials for an instructional unit to use to construct a classroom test. Results of a multivariate analysis of covariance suggested that students exposed to the TOS strategy constructed a test with higher test content evidence but not response process evidence scores. Furthermore, we found that treatment participants were able to accurately complete the TOS tool and choose items that reflected the subject matter specified in the TOS tool. However, they experienced difficulty selecting items at the cognitive level specified in the TOS tool.  相似文献   

7.
Squirrel monkeys (Saimiri sciureus) were trained on visual recognition memory tasks in a Wisconsin General Testing Apparatus with a trial-unique procedure that used 250 objects as stimuli. In Experiment 1, acquisition of a trial-unique delayed non-match-to-sample task (DNMS) was compared with acquisition of a trial-unique delayed match-to-sample (DMS) task. The DNMS task was learned in significantly fewer trials and with significantly fewer errors. Two animals in the DNMS group demonstrated highly accurate retention of the DNMS strategy despite an 11-month hiatus in experimental testing. In Experiment 2, the same procedures were used to study the learning of lists of 3, 5, 10, or 20 serially presented items. Although the animals were able to accurately remember lists of up to 20 items, there was no evidence of serial position effects.  相似文献   

8.
9.
This study intends to investigate how multi-symbolic representations (text, digits, and colors) could effectively enhance the completion of co-located/distant collaborative work in a virtual reality context. Participants’ perceptions and behaviors were also studied. A haptics-enhanced virtual reality task was developed to conduct collaborative work. An experiment was conducted with which participants were separated into four groups with the combinations of two variables: w/o multi-symbols and co-located/distant. Performance results show that multi-symbolic representations significantly helped users reduce the time in completing a task in the co-located case. Perception results show that awareness, presence and social presence are highly correlated to usefulness, ease of use and playfulness. Further, behavior analysis found two strategies beneficial to the completion of collaborative work with which divide and conquer is used in problem solving. In addition, the major failure mode is identified and it implies that participants had problems in depth perception. In summary, multi-symbolic representations in haptics-enhanced virtual reality systems have potentials to effectively help collaborative work.  相似文献   

10.
The purpose of the study was twofold: to understand how usability affected physicians' performance as they used an electronic health record (EHR) and to ascertain whether use of a semantic search feature would better support physician performance during an information‐seeking task. Participants (n = 10) were asked to complete two search tasks to find pertinent patient information. In the first task, participants located the information as they normally would (through browsing the EHR). In the second task, participants employed a semantic search tool. Upon task completion, participants were interviewed to further understand their perceptions and information‐seeking behavior in an EHR. Statistically significant results confirmed that participants were able to more efficiently navigate through an EHR in terms of time and number of clicks when using the semantic search feature. Moreover, participants were more confident in the accuracy of their answers when using semantic search compared with the browsing method. Implications for practice are discussed.  相似文献   

11.
Psychometric properties of 24 items from the fifth grade Early Childhood Longitudinal Study-Kindergarten Cohort Mathematics Teacher Questionnaire were investigated in a sample of 5,181 participants. These items asked teachers to report how often they had their classroom students engage in different mathematics content, skills and instructional practices. Exploratory factor analyses were employed to evaluate the underlying factor structure of the selected items. Results suggest that these items effectively measure three distinct latent constructs that are specific to mathematics instruction: Instructional Practices for Teaching Mathematics, Developing Number Sense, and Beyond Number Sense. These results support the use of this instrument as a guide for research and policy, or to inform teacher curriculum decisions.  相似文献   

12.
In language learning contexts, writing tasks that involve reading of source texts are often used to elicit more authentic integrative language use. Thus, interests in researching these read-to-write tasks in general and as assessment tasks keep growing. This study examined and modeled the process of summary writing as a read-to-write integrated task. Data of test-taking process were collected from 94 Chinese English as a foreign language (EFL) learners who completed two summarization tasks. Seven students first completed the tasks while thinking aloud their mental process. The researcher observed their test-taking process and conducted post-test interviews to learn more about how they completed the tasks. Participants’ verbal reports were coded into mental moves, which were then grouped according to their purposes. These formed the basis for identifying the processes and sub-stages participants followed while completing the tasks. Based on the analysis of the think-aloud, observation, and interview data, a questionnaire was developed containing items specifying the processes task takers went through. The questionnaire was completed by the remaining 87 participants to test the generalizability of the findings. A process model of summarization was constructed subsequently. The implications of the study are discussed with reference to construct validity of summarization tasks, EFL writing instruction and assessment.  相似文献   

13.
This qualitative study was designed to investigate teachers’ perceptions of the impact of inclusion of children with special needs on their classes. Twenty participants were randomly selected from the 25 teachers who had volunteered for the study. These teacher participants completed a survey which was composed of 62 items dealing with attitudes and perceptions, incentives for encouraging inclusion, and concerns from a classroom perspective. From these 20 participants, five teachers were then randomly selected for interviews. Findings revealed that some of the teachers’ primary concerns were planning time, meeting the needs of all students, and ongoing professional development to respond effectively to the increasingly diverse needs of students in the classroom.  相似文献   

14.
This study was designed to examine the following central Vygotskian hypotheses about the functions of preschool children's private speech: (1) that private speech facilitates the transition from collaborative to independent task performance, and (2) that children's use of private speech is conducive to task success. Age-related changes in children's use of private speech were also examined. Forty preschoolers, ranging in age from three to five, completed a selective attention task with scaffolded assistance given from an experimenter when needed. In an effort to overcome several methodological limitations found in previous research, a new microgenetic method of analyzing speech-performance relations based on assigning task items to discrete categories reflecting six possible co-occurrences between private speech (item-relevant speech, item-irrelevant speech, silence) and performance (success, failure) was introduced. Results were that (1) item-relevant speech was used more often during successful than during failed items while the opposite was true for item-irrelevant speech; (2) children were more likely to use private speech on successful items after scaffolding than they were on similar items not following scaffolding; (3) after scaffolding, children were more likely to succeed on the next item if they talked to themselves than if they were silent; and (4) hypothesized curvilinear, age-related patterns in children's item-relevant private speech and silence were found, however, only when analyzing speech during successful items. Implications of this research for preschool teachers and parents are discussed.  相似文献   

15.
Every aspect of our daily lives has been touched by the ubiquitous nature of mobile devices. We have experienced an exponential growth of mobile computing—a trend that seems to have no limit. This paper provides a report on the findings of a recent offering of an iPhone Application Development course at Sheridan College, Ontario, Canada. It includes a report on the effectiveness of the course by assessing students’ opinions of the course, and by analyzing student performance scores in relation to traditional programming courses. It also provides an overview of the development environment, an assessment of this new course including qualitative surveys, informal observations and quantitative analysis including student performance score results. Overall, it was found that students enjoyed the iPhone course and performed very well. The iPhone Group exceeded the performance of a Comparison Group: F(1,81) = 4.145, p < .05.  相似文献   

16.
The main aim of this study was to examine second language production and discrimination skills in the light of musical aptitude. Our study was conducted in university settings in south-western Finland. English was used as a model for the second language due to its popularity among young adults. There were three types of tests used in this study: a pronunciation test, a phonemic listening discrimination task, and the Seashore test as an index of the musical aptitude. All the participants performed equally well in the phonemic listening discrimination task. However, the participants with higher musical aptitude were able to pronounce English better than the participants with less musical aptitude. The results, therefore, imply that musical and linguistic skills are interconnected.  相似文献   

17.
A teacher network was formed at an Australian university in order to better promote interdisciplinary student learning on the complex social-environmental problem of climate change. Rather than leaving it to students to piece together disciplinary responses, eight teaching academics collaborated on the task of exposing students to different types of knowledge in a way that was more than the summing of disciplinary parts. With a part-time network facilitator providing cohesion, network members were able to teach into each other's classes, and share material and student activities across a range of units that included business, zoology, marine science, geography and education. Participants reported that the most positive aspects of the project were the collegiality and support for teaching innovation provided by peers. However, participants also reported being time-poor and overworked. Maintaining the collaboration beyond the initial one year project proved difficult because without funding for the network facilitator, participants were unable to dedicate the time required to meet and collaborate on shared activities. In order to strengthen teacher collaboration in a university whose administrative structures are predominantly discipline-based, there is need for recognition of the benefits of interdisciplinary learning to be matched by recognition of the need for financial and other resources to support collaborative teaching initiatives.  相似文献   

18.
The aim of the present study was to address how to effectively predict mathematics learning disability (MLD). Specifically, we addressed whether cognitive data obtained during kindergarten can effectively predict which children will have MLD in third grade, whether an abbreviated test battery could be as effective as a standard psychoeducational assessment at predicting MLD, and whether the abbreviated battery corresponded to the literature on MLD characteristics. Participants were 226 children who enrolled in a 4‐year prospective longitudinal study during kindergarten. We administered measures of mathematics achievement, formal and informal mathematics ability, visual‐spatial reasoning, and rapid automatized naming and examined which test scores and test items from kindergarten best predicted MLD at grades 2 and 3. Statistical models using standardized scores from the entire test battery correctly classified ~80–83 percent of the participants as having, or not having, MLD. Regression models using scores from only individual test items were less predictive than models containing the standard scores, except for models using a specific subset of test items that dealt with reading numerals, number constancy, magnitude judgments of one‐digit numbers, or mental addition of one‐digit numbers. These models were as accurate in predicting MLD as was the model including the entire set of standard scores from the battery of tests examined. Our findings indicate that it is possible to effectively predict which kindergartners are at risk for MLD, and thus the findings have implications for early screening of MLD.  相似文献   

19.
This qualitative instrumental case study explored the experiences and perceptions of seven community college leaders of their use of anticipatory leadership. Two research questions guided this study: (a) How do community colleges use anticipatory leadership to respond to internal and external changes? (b) How do community college leaders use anticipatory leadership principles for problem solving? The themes that emerged to address question one were engagement with others is required to respond to change effectively, data analysis and currency of knowledge are required to identify gaps and to respond to them, leaders must be willing to take calculated risks, and leaders must communicate effectively in order for change to occur. The themes that emerged to address question two were analysis of data is instrumental to identifying and closing the gaps in institutions, leading to better informed decisions; and anticipatory leadership reduces the need to use reactionary leadership practices. The findings of the study are that the participants identified and supported that anticipatory leadership practices are effective for responding to change. The anticipatory leadership practices highlighted as needed by the participants included the need for leaders who are engaged, have the skills and ability to utilize data to make decisions, are current in their higher education knowledge, take calculated risks when needed, and can communicate effectively. These skills are needed for community college leaders to be able to be proactive versus reactionary in their decision-making, as well as effective with their gap analysis identification, trend predictions, decision-making, and problem solving.  相似文献   

20.
This research examined whether distinct student profiles emerged from measures of interest, mastery goals, task value, and self-efficacy in samples of Norwegian student nurses and business administration students. Additionally, profile differences in self-reported strategy use and epistemological beliefs were examined, as well as changes in student profiles over one academic year. Distinct groups of participants were identified in both samples, with considerable consistency in student profiles across the two academic contexts. In both contexts, more positively motivated participants consistently reported more use of deeper-level strategies and expressed more sophisticated beliefs about the nature of knowledge and knowledge acquisition. The longitudinal analysis showed that despite overall decreases in adaptive motivation in both contexts, many participants were able to maintain relatively high levels of motivation across the academic year, and, especially among the business administration students, quite a few developed more adaptive motivation over time. Yet, a great many participants in both samples lost some of their enthusiasm and engagement.  相似文献   

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