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1.
The present experiment employed an appetitive spatial discrimination response to examine alleviation of forgetting induced by retroactive interference. For separate groups of rats, a footshock that had occurred during acquisition contingent upon a correct response was tested for its effectiveness as a reactivation treatment. The results indicated that the footshock effectively alleviated forgetting, but only for rats experiencing the shock stimulus during original learning. These results suggest that a reactivation treatment may arouse affective or stimulus properties in common with the target memory to elicit retrieval of that memory. 相似文献
2.
The impact of sequencing and prior knowledge on learning mathematics through spreadsheet applications 总被引：1，自引：0，他引：1
Tracey Clarke Paul Ayres John Sweller 《Educational technology research and development : ETR & D》2005,53(3):15-24
According to cognitive load theory, instruction needs to be designed in a manner that facilitates the acquisition of knowledge
in long-term memory while reducing unnecessary demands on working memory. When technology is used to deliver instruction,
the sequence in which students learn to use the technology and learn the relevant subject matter may have cognitive load implications,
and should interact with their prior knowledge levels. An experiment, using spreadsheets to assist studient learning of mathematics,
indicated that for studients with little knowledge of spreadsheets, sequential instruction on spreadsheets followed by mathematics
instruction was superior to a concurrent presentation. The reverse was found for studients with more knowledge of spreadsheets.
These results are explained in terms of cognitive load theory. 相似文献
3.
We evaluated the efficiency, precision, and concurrent validity of results obtained from adaptive and fired-item music listening tests in three studies: (a) a computer simulation study in which each of 2,200 simulees completed a computerized adaptive tonal memory test, a computerized fired-item tonal memory test constructed from items in the adaptive test pool and two standardized group-administered tonal memory tests; (b) a live testing study in which each of 204 examinees took the computerized adaptive test and the standardized tests; and (c) a live testing study in which randomly equivalent groups took either the computerized adaptive test (n = 86) or the computerized fired-item test (n = 86). The adaptive music test required 50% to 93% fewer items to match the reliability and concurrent validity of the fired-item tests, and it yielded higher levels of reliability and concurrent validity than the fired-item tests when test length was held constant. These findings suggest that computerized adaptive tests, which typically have been limited to visually produced items, may also be well suited for measuring skills that require aurally produced items. 相似文献
4.
Francesca Pazzaglia Cristina Toso Stefano Cacciamani 《British journal of educational technology : journal of the Council for Educational Technology》2008,39(1):110-124
Many models have hypothesized that multimedia comprehension requires the concurrent processing of verbal and visuospatial information by limited information processing systems. However, in spite of the emphasis devoted to the concurrent processing of verbal and visuospatial information, little research has so far investigated the specific role played by verbal and visuospatial abilities in multimedia comprehension. The present paper aims to study the specific involvement of verbal and visuospatial working memory in multimedia learning. Ninety‐two students (39 boys and 53 girls) from a middle school in a small city in the northeast of Italy, were asked to learn new information on the physical and social geography of Germany from a hypermedium. Participants were also required to perform a reading comprehension test, two short‐term memory tasks, and two working memory tasks, which assessed either verbal or visuospatial memory. The results support the hypothesis that both verbal and visuospatial working memory sub‐components play a role in hypermedium processing, but with specific and distinct functions: the performance in the verbal working memory task was able to predict the semantic knowledge children can derive from hypermedia learning. In contrast, visuospatial working memory seemed to have lower connections to the semantic knowledge children derived from a hypermedia document, whereas its role emerged in the ability to construct a representation of the document structure. 相似文献
5.
Three experiments were conducted examining short-term retention within individual object-discrimination learning-set (ODLS) problems. In Experiment I, it was found that intraproblem retention decreased during ODLS acquisition. Experiment II demonstrated that this phenomenon was not due to simple recency of experience with other ODLS problems. Experiment III demonstrated that retention was not influenced by the number of trials per problem or number of problems per session. These results were interpreted as supporting a conditional discrimination model of ODLS acquisition in bluejays.
相似文献6.
RAID技术在FTP服务器上的应用 总被引：1，自引：0，他引：1
FTP服务作为局域网资源的主要提供载体之一,对于资源共享和数据存储发挥重要的作用。FTP服务器对于存储器的要求较高,数据吞吐量、并发访问和并行操作都是影响FTP服务器性能的重要因素和瓶颈。RAID的使用改变了传统服务器存储的方式,以一种创新的存储思想对存储器进行了重组,提高了存储器的性能．因此FTP服务器可以更快的响应和传输客户端的请求。 相似文献
7.
Although a number of studies have demonstrated nearly complete retention of fear in a conditioned suppression task, they provide little information about the nature of the memory for the CS. The purpose of the present experiment was to investigate the retention of an attribute of a tonal CS that had been paired with shock and was thus capable of eliciting a conditioned emotional response (CER) in rats. The Kamin blocking effect was utilized to detect changes in the memory of CS attributes. Either 1 or 21 days following conditioning to a tone, separate groups of rats received compound conditioning in which either the original or a novel tone was combined with a light. Subsequent measurement of suppression to the added element (light) indicated that only the original CS produced blocking at the short delay, but that both original and novel tones resulted in blocking at the 21-day interval. This increase in the extent of blocking suggests that memory for specific attributes of the CS does diminish as a function of time. 相似文献
8.
Behavioral self-regulation and executive function both predict visuomotor skills and early academic achievement 总被引：1，自引：0，他引：1
Derek R. Becker Alicia Miao Robert Duncan Megan M. McClelland 《Early childhood research quarterly》2014
The present study explored direct and interactive effects between behavioral self-regulation (SR) and two measures of executive function (EF, inhibitory control and working memory), with a fine motor measure tapping visuomotor skills (VMS) in a sample of 127 prekindergarten and kindergarten children. It also examined the relative contribution of behavioral SR, EF, and VMS skills for concurrent academic achievement. Results indicated that a measure of working memory (WJ-Working Memory) and a measure of behavioral SR (Head–Toes–Knees–Shoulders task; HTKS) were directly related to VMS. Differential relations were also examined for prekindergarten and kindergarten children. Results revealed a significant interaction between age and inhibitory control (Day–Night), and an interaction at a trend level between age and working memory suggesting both tasks are more related to VMS skills for younger children. Results also indicated that behavioral SR, EF, and VMS skills were differentially related to the three achievement outcomes. Both behavioral SR and VMS were significantly related to math, behavioral SR, EF, and VMS were significantly related to emergent literacy, and behavioral SR and EF were related to vocabulary scores. Results point to significant relations between behavioral SR and EF with VMS, and how each is related to early academic achievement in preschool and kindergarten. 相似文献
9.
《教育实用测度》2013,26(1):25-51
In this study, we compared the efficiency, reliability, validity, and motivational benefits of computerized-adaptive and self-adapted music-listening tests (referred to hereafter as CAT and SAT, respectively). Junior high school general music students completed a tonal memory CAT, a tonal memory SAT, standardized music aptitude and achievement tests; and questionnaires assessing test anxiety, demographics, and attitudes about the CAT and SAT. Standardized music test scores and music course grades served as criterion measures in the concurrent validity analysis. Results showed that the SAT elicited more favorable attitudes from examinees and yielded ability estimates that were higher and less correlated with test anxiety than did the CAT. The CAT, however, required fewer items and less administration time to match the reliability and concurrent validity of the SAT and yielded higher levels of reliability and concurrent validity than the SAT when test length was held constant. These results reaffirm important tradeoffs between the two administration procedures observed in prior studies of vocabulary and algebra skills, with the SAT providing greater potential motivational benefits and the CAT providing greater efficiency. Implications and questions for future research are discussed. 相似文献
10.
Five rats responded on several concurrent schedules in which pressing a key produced reinforcers in one component and pressing a lever produced reinforcers in the other component (Experiment 1). Four pigeons responded on several concurrent keypeck treadlepress schedules (Experiment 2). The programmed rates of reinforcement varied from 15 to 240 reinforcers per hour in different conditions. Rates of responding usually changed systematically within experimental sessions, and the changes were similar for the two components of a concurrent schedule. These results imply that within-session changes in responding may not confound the predictions of theories that describe the ratio of the rates of responding during the two components of concurrent schedules. Instead, within-session changes may be controlled by a mechanism that integrates the reinforcers obtained from the two components. 相似文献
11.
A recent and pervasive “urban legend” in education describes contemporary students as digital natives and effective multitaskers. The current study investigated the effects of sequential and concurrent multitasking scenarios on content retention and topic interest in a multimedia learning environment. Five hundred and seventy two undergraduate students were randomly assigned to one of the seven conditions in which either sequential or concurrent multitasking scenarios were simulated through a web-based system. While the sequential conditions either required switching between instructional and distractive videos or between two instructional videos, the concurrent multitasking scenarios involved online chatting while watching the videos. The relationships between digital device experience, daily media exposure, current multitasking habits, working memory components, and content retention were also investigated. Findings revealed that sequential multitasking did not interfere with retention whereas concurrent multitasking interfered with both retention and topic interest. Digital device experience and daily multitasking habits were not related with retention. Furthermore, daily media exposure was negatively associated with the retention, particularly in the longer sequential multitasking scenarios. Finally, different types of multitasking were related with different working memory constructs. 相似文献
12.
One hundred sixty-five Hong Kong Chinese children were administered measures of early mathematics, visual-spatial skills, and executive functioning (working memory, inhibition, shifting, updating) once in kindergarten (mean age?=?62.80 months, SD?=?3.74) and again in first grade (mean age?=?77.25 months, SD?=?4.60). In kindergarten, visual-spatial skills, inhibition, shifting, and working memory were all uniquely associated with concurrent mathematics performance; in first grade, only working memory and visual-spatial skills were significantly related to concurrent mathematics abilities. Furthermore, working memory and visual-spatial skills in kindergarten predicted 19% of the variance in children’s mathematics performance in first grade, beyond the autoregressive effects of mathematics performance in kindergarten as well as demographic variables. Findings highlight the importance of working memory and visual-spatial skills for young Chinese children in mastering mathematics. 相似文献
13.
A concurrent speaking paradigm was used to assess the importance of subvocalization during the reading of lengthy natural prose passages. Experiment 1 showed that having subjects count aloud while reading interfered with their comprehension and recall of the text's details as well as its gist, but did not affect the durability of the memory trace. Experiment 2 replicated these findings and established the validity of using concurrent speaking as a technique to interfere with speech-specific processes during silent reading. By pitting concurrent speaking against a nonverbal concurrent task, Experiment 2 provided evidence that its detrimental effect on comprehension was due to a competition for speech-related resources rather than a general competition for cognitive resources. Interfering with speech recoding during silent reading led to an average decrement of 10–12% in comprehension performance. However, Experiment 2 also showed that there were substantial individual differences in the magnitude of the speech interference effect and that these differences were systematically related to subjective reports about the concurrent speaking manipulation. 相似文献
14.
This study assumes that children of various academic abilities may be characterized by different patterns of memory function. To test this assumption, subgroups of children were identified through a hierarchical cluster analysis based upon a test battery of sentence span, preload, and concurrent memory demand tasks. One subtype presented a profile of children with learning disabilities showing severe memory performance deficits, while another subgroup yielded high memory and high academic performance. Four additional subtypes had variations in memory performance, which in turn reflected variations in external criteria related to reading, mathematics, and spelling performance. For each subtype, performance strengths and weaknesses were characterized within Baddeley's (1986) working memory model. The study provides partial validation for the classification of children with learning disabilities on psychometric measures according to patterns of memory performance. 相似文献
15.
Werner K. Honig 《Learning & behavior》1987,15(1):6-14
Pigeons were trained with two concurrent delayed conditional discriminations that involved different distributions of memory intervals, namely 1 and 5 sec in the “short” and 5 and 10 sec in the “long” distribution. Memory for the initial stimulus was much better after 5 sec in the short distribution than in the long one. The memory functions between the intervals within each distribution were essentially flat. These findings were replicated in a second study that involved differential outcomes; this procedure enhanced memory generally within trials so that memory intervals of 1, 9, and 19 sec could be used, with 9 sec serving as the common memory interval. The findings are interpreted on the basis of the subject’s expectation of the likely duration of the upcoming memory interval and the associated delay of reinforcement. 相似文献
16.
Phonological Analysis Skills, Verbal Working Memory, and Reading Ability in Second-Grade Children 总被引：9，自引：0，他引：9
This study tested the hypothesis that phonological analysis skills make a unique contribution to reading ability against the hypothesis that one latent phonological factor underlies the assocations among analysis skills, verbal working memory skills, and reading achievement. Hierachical multiple regression analyses examined the unique contributions of phonological analysis and verbal working memory measures to the prediction of 3 measures of concurrent reading ability in 68 second-grade children (mean age 7 years 4 months). Phonological analysis and verbal working memory measures each accounted for unique variation in each of the 3 reading measures. In addition, phonological analysis measures, but not verbal working memory measures, were particularly strong predictors of pseudoword reading skills. These results suggest that, although phonological analysis and verbal working memory skills share a substantial amount of common variance, phonological analysis and verbal working memory tasks do tap somewhat different reading-related skills. 相似文献
17.
In two experiments, rats solved two concurrent discrimination problems in which one stimulus (i.e., a facilitator) signaled the reinforcement of another stimulus (i.e., a target). Then a transfer test assessed the capacity of facilitators trained in one problem to promote responding to targets trained in the other. Experiment 1 found that a facilitator promoted as much responding to such a transfer target as to the target with which it was originally trained. Transfer was not obtained with a pseudofacilitator that was uninformative, in training, about the reinforcement of its target. Experiment 2 manipulated the stimulus modality of the targets and facilitators. Its results indicated that transfer performance was not due to generalization between training and transfer targets or facilitators. These results parallel those from comparable autoshaping paradigms with pigeons, and they agree with the view that facilitators promote responding by lowering the threshold for activation of the US representation. 相似文献
18.
In four experiments, rats were trained on different patterning discriminations before being tested with compounds composed of novel combinations of the trained stimuli. In Experiment 1, rats were trained on a negative-patterning schedule (A+ B+ AB-) intermixed with reinforced presentations of a second compound (CD+). On a subsequent test, the rats responded more to two novel compounds, AC and BD, than to A and B, but less than to CD. In Experiment 2, rats were trained on two concurrent negative-patterning discriminations (A+ B+ AB-, C+ D+ CD-). On test, they responded more to AC and BD than to AB and CD, but less than to the single stimuli. In Experiment 3, rats were trained on two concurrent positive-patterning discriminations (A-B- AB+, C- D- CD+). On test, their response rates to AC and BD were not different from the response rates to the trained compounds (AB and CD). Finally, in Experiment 4, rats were trained on a positive- and negative-patterning discrimination concurrently. Once again, on test, response rates to AC and BD were not different from responding on reinforced trials of the trained discriminations (A+, B+, and CD+). We discuss the implications of these findings for elemental and configural models of stimulus representation. 相似文献
19.
We examined the contribution of working memory capacity to the development of children’s reading comprehension. We present
data from three waves of a longitudinal study when the children were 7 years (Grade 1), 8 years (Grade 2) and 9 years (Grade
3). Two questions were raised: The first question concerned the developmental changes of the relative contribution of working
memory in predicting reading comprehension compared to vocabulary and decoding skills. The second question explored to what
extent reading comprehension could be predicted by working memory capacity measured at a prior time. At the end of each grade,
reading comprehension, nonword reading, vocabulary knowledge and working memory capacity were assessed. To test the first
question, the predictive power of working memory capacity was compared to vocabulary and decoding skills by performing concurrent
multiple-regression analyses in each grade. The results showed that working memory capacity emerged as a direct predictor
of reading comprehension in Grade 3. To address the second question, we performed multiple-regression analyses predicting
reading comprehension from working memory, nonword reading, and vocabulary measured at a prior time. In these analyses, the
autoregressive effect was taken into account to separately assess the unique contribution of each predictor to the development
of later reading comprehension. The results showed that Grade 1 vocabulary and Grade 2 working memory had additional effects
on Grade 3 reading comprehension after the autoregressive effect of reading comprehension had been accounted for. These findings
support the idea that, as word recognition becomes automated throughout the early grade levels, working memory becomes an
important determinant of reading comprehension. There is also evidence that working memory capacity directly influences the
development of reading comprehension skills. The direction of the causal flow is discussed. 相似文献
20.
When Words Are Represented in Memory Like Pictures: Evidence for Spatial Encoding of Study Materials
《Contemporary educational psychology》1999,24(1):38-54
We examined whether different word displays also differ in terms of the format in which they are represented in memory. Undergraduates studied a text, an outline, a graphic organizer, or a concept map and then were shown either a verbal (digits) or spatial (dots) display. They were then tested on comprehension of the first display and recognition of the second display. Comprehending graphic organizers and concept maps interfered with the spatial concurrent task and vice versa, whereas the verbal concurrent task interfered with comprehension of texts and outlines. These results are consistent with the conjoint retention hypothesis suggesting that spatial encoding may explain the facilitative effects of graphic organizers and concept maps. 相似文献