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On the interpretation of working memory span in adults   总被引:2,自引:0,他引:2  
Experimental research into children's working memory span has shown that retention duration contributes substantially to span performance, while processing efficiency need not be related to concurrent memory load (Towse, Hitch, & Hutton, 1998). These findings have been used to argue for a model of working memory span that emphasizes time-based forgetting rather than the popular resource-sharing or tradeoff framework. The present paper considers whether adults perform working memory span tasks in a qualitatively different way. Data from reading span and operation span tasks show that adults' performance can be distinguished from that of children, but also that a task-switching model of working memory span can explain some important aspects of performance.  相似文献   
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A dual-task methodology was used to investigate the roles played by executive and phonological aspects of working memory in mental arithmetic. Experiment 1 showed that suppression of articulation impaired the ability to add a pair of briefly presented three-digit numbers. Suppression had no effect when the need to store temporarily was minimized by making the numbers visible throughout calculation. Experiment 2 showed that disrupting executive processes by requiring concurrent performance of a Trails task impaired the ability to add numbers that remained permanently visible. Performance on the Trails task deteriorated as the number of carry operations in the addition increased. Experiment 3 showed that this decline in Trails performance was not simply due to the extra time taken by carrying. These and other features of the results suggest that the carrying component of mental arithmetic places substantial demands on executive processes, whereas the need to retain problem information is met by the phonological loop. The results are consistent with an interpretation of executive processes according to which there is a limit on the capacity to inhibit strongly primed routine operations.  相似文献   
944.
Evans and Kihlstrom (1973) have proposed that the phenomenon of “disrupted retrieval” may be an unobtrusive measure of post-hypnotic amnesia not readily explicable in terms of role-playing or task motivational paradigms of hypnotic behaviour. An attempt was made to test the viability of a role-playing explanation of hypnotic disrupted retrieval by giving equivalent role-playing instructions to carry out hypnosis scale suggestions to unhypnotised subjects. When given the instruction to “pretend” to remember on a few items, unhypnotised subjects recalled items in a random and disorganised manner similar to Evans' and Kilstrom's “hypnotised” subjects; when not given this instruction the unhypnotised subjects showed the sequential organised recall of Evan's and Kihlstrom's hypnotically insusceptible subjects. It was concluded that the phenomenon of disrupted retrieval in post-hypnotic amnesia can readily be explained in terms of the role-playing behaviour implicitly demanded of hypnotically susceptible subjects.  相似文献   
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J. C. Schank (2001) claimed to identify 2 categories of error-measurement error and recall biases-in the methodology used in studies of menstrual synchrony. This commentary focuses on the 2nd of these, recall biases, and other errors that he argued may result from "allowing participants to fill out menstrual-cycle-onset calendars" (p. 3). J. C. Schank's detailed discussion of various types of recall biases is inappropriate and misleading given that the majority of menstrual-synchrony studies have used prospective menstrual calendars. The use of menstrual calendars is a well-accepted method in a number of research areas and demands little of participants. J. C. Schank questioned the validity of menstrual calendar data on the basis of assumptions about recall bias for which he had no evidence.  相似文献   
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