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51.
In three experiments, we examined transfer and contextual memory in a category search task. Each experiment included two phases
(training and test), during which participants searched through category and exemplar menus for targets. In Experiment 1,
the targets were from one of two domains during training (grocery store or department store); the domain was either the same
or changed at test. Also, the categories were organized in one of two ways (alphabetically or semantically); the organization
either remained the same or changed at test. In Experiments 2 and 3, domain and organization were held constant; however,
categories or exemplars were the same, partially replaced, or entirely replaced across phases in order to simulate the dynamic
nature of category search in everyday situations. Transfer occurred at test when the category organization or domain was maintained
and when the categories or exemplars matched (partially or entirely) those at training. These results demonstrate that transfer
is facilitated by overlap in training and testing contexts. 相似文献
52.
Deanna Kuhn 《Perspectives on Psychological Science》2006,1(1):59-67
ABSTRACT— The news that the brain continues to develop through much of adolescence risks becoming an explanation for anything and everything about teenagers and suggests the need for closer analysis. Central to such analysis is clarifying what develops at a psychological level during these years. An examination of contemporary research data on adolescent cognitive development identifies increased executive control as a major dimension of cognitive development during the second decade of life. Such development is consistent with changes occurring in the brain during this period. 相似文献
53.
We identify three aspects of scientific thinking beyond the control-of-variables strategy that we claim are essential for students to master as a foundation for skilled scientific thinking. The first is strategic and involves the ability to coordinate effects of multiple causal influences on an outcome. The second is a mature understanding of the epistemological foundations of science, recognizing scientific knowledge as constructed by humans rather than simply discovered in the world. The third is the ability to engage in skilled argumentation in the scientific domain, with an appreciation of argumentation as entailing the coordination of theory and evidence. We present new empirical data with respect to the first two of these competencies, supporting the claim that they are not well developed by early adolescence and warrant attention and provision of effective kinds of scaffolding. 相似文献
54.
The attention network test (ANT) is a brief computerized battery measuring three independent behavioral components of attention: Conflict resolution (ability to overcome distracting stimuli), spatial Orienting (the benefit of valid spatial pre-cues), and Alerting (the benefit of temporal pre-cues). Imaging, clinical, and behavioral evidence demonstrate hemispheric asymmetries in these attentional networks. We constructed a lateralized version of the ANT (LANT), with brief targets flashed in one or the other visual hemifield. We also modified the tests by including invalid spatial cues in order to measure the cost component of Orienting. In a series of experiments, we investigated the efficiency of the attention networks separately in each hemisphere. Participants exhibited significant estimates of all networks measured by the LANT, comparable to the ANT. The three networks were represented in each hemisphere separately and were largely comparable across the two hemispheres. We suggest that the LANT is an informative extension of the original ANT, allowing for measurement of the three attention networks in each hemisphere separately. 相似文献
55.
We present evidence suggesting that the effect of self-explanations on learning is not always beneficial and, in fact, in some contexts has a detrimental effect. Over eight sessions, fourth-graders engaged in investigation of a database with the goal of identifying causal effects. In a separate task, children in one condition also generated self-explanations regarding the mechanisms underlying the causal effects they believed to be present. In a comparison condition, they did not. On a transfer task, children in the no-explanations condition showed superior causal inference performance. The findings are discussed as reflecting the development of “data-reading” skill with which an emphasis on explanations may interfere. 相似文献
56.
Deanna Kuhn Maria Pease Clarice Wirkala 《Journal of experimental child psychology》2009,103(3):268-284
The skill of predicting outcomes based on simultaneous effects of multiple factors was examined. Over five sessions, 91 sixth graders engaged this task either individually or in pairs and either preceded or followed by six sessions on the more widely studied inquiry task that requires designing and interpreting experiments to identify individual effects. Final assessment, while indicating a high level of mastery on the inquiry task, showed progress but continuing conceptual challenges on the multivariable prediction task having to do with understanding of variables, variable levels, and consistency of a variable’s operation across occasions. Task order had a significant but limited effect, and social collaboration conferred only a temporary benefit that disappeared in a final individual assessment. In a follow-up study, the lack of effect of social collaboration was confirmed, as was that of feedback on incorrect answers. Although fundamental to science, the concept that variables operate jointly and, under equivalent conditions, consistently across occasions is one that children appear to acquire only gradually and, therefore, one that cannot be assumed to be in place. 相似文献
58.
HOW WELL DO JURORS REASON? 总被引:1,自引:0,他引:1
Significant individual variation IS observed m how people reason as jurors At the saUsficing end of a continuum we identify, the juror draws on evi-dence selectively to construct a single story of what happened, with no acknowledgment of discrepant evidence or alternative possibilities A contrasting theory-evidence coordination mode of processing entails construction of multiple theories (story-verdict constellations)that are evaluated against the evidence and against alternatives Individual differences Influence task outcome, the satisficing mode being associated with more extreme verdict choices and very high certainty 相似文献
59.
We examined the relationships among verbosity, syntactic complexity, and pausing in the speech of 21 Diagnostic and Statistical Manual of Mental Disorders (3rd ed., rev.) (DSM-III-R) diagnosed schizophrenic participants and 19 DSM-III-R diagnosed manic participants. We found that less verbosity was associated with both less syntactic complexity and greater pausing. In addition, less syntactic complexity was associated with greater pausing. The strength of these associations did not differ significantly between the two diagnostic groups. We propose that deficits in verbosity, syntactic complexity, and pausing are all related to a disturbance in message generation. We discuss the consistency of this hypothesis with previous research linking information processing and frontal lobe deficits to disturbances in verbosity, syntactic complexity, and pausing. 相似文献
60.
This study investigated the relation between prevocational preference, as measured by the client's selection of a task object, and the work that followed that choice. After selecting a task object, the clients worked a task previously assessed to be more or less preferred than the one indicated by the object. The results indicated that when the selection represented a task that was less preferred than the one actually worked, choices for that object increased on subsequent trials. Conversely, when the selection represented a task that was more preferred than the task subject actually worked, choices for the object decreased on subsequent trials. The work that followed object choices reinforced or punished subsequent selections. These findings indicated that the clients' object choices were valid indicators of their preference for working different tasks. They were also consistent with Premack's principle that one class of responses may reinforce or punish a different class of responses for the same individual. 相似文献