Browsing College of Arts and Sciences (MU) by Thesis Advisor "Cowan, Nelson"
Now showing items 1-18 of 18
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Boundary conditions for a visual working memory capacity model
(University of Missouri--Columbia, 2009)Cowan's K (Cowan, 2001) is an effective measure of visual working memory capacity and has been widely accepted by working memory researchers in recent years. However, one fundamental assumption of this measure, so called ... -
Can the focus of attention accommodate multiple, separate items?
(University of Missouri--Columbia, 2011)Researchers of working memory currently debate capacity limits of the focus of attention, the proposed mental faculty in which items are most easily accessed. Cowan (1999) suggested that its capacity is about 4 chunks, ... -
Cognitive load and time based forgetting
(University of Missouri--Columbia, 2009)Recently, various researchers have claimed that time does not play a direct role in shortterm forgetting. Instead, they claim that time is only related to forgetting because it is correlated with other factors that cause ... -
Decreases in working memory capacity for sentence stimuli with adult aging
(University of Missouri--Columbia, 2007)Previous studies have found that older adults have poorer immediate recall for language. Older adults may recall fewer chunks from working memory, or may have difficulty binding words or sentences together to form multi-unit ... -
Differentiating a chunk from a group : the role of verbal rehearsal in creating a hierarchical list structure
(University of Missouri--Columbia, 2012)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Working memory, the small amount of information that can be temporarily held in mind, can be boosted through the use of mnemonic processes. The purpose ... -
Domain-general and domain-specific brain activations and networks in visual and auditory working memory
(University of Missouri--Columbia, 2013)Working memory (WM) is a latent cognitive structure that involves active maintenance and manipulation of information for a short time. How items are stored in WM is an important issue that remains controversial. Whereas ... -
Estimating working memory capacity for lists of nonverbal sounds
(University of Missouri--Columbia, 2011)Working memory (WM) capacity limit has been extensively studied in the domains of visual and verbal stimuli. The previous studies have suggested a constant WM capacity of typically about 3 or 4 items, based on the number ... -
Forgetting in short term memory : the effect of time
(University of Missouri--Columbia, 2008)Forgetting in short-term memory has been studied extensively and yet no consensus has emerged to explain its cause. Two theories continue to provide competing explanations of forgetting in short-term memory: decay and ... -
How syntactic structure and cue position affect working memory for connected discourse
(University of Missouri--Columbia, 2019)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI--COLUMBIA AT REQUEST OF AUTHOR.] The current study explored working memory for connected discourse, as well as the potential roles of syntactic structure and cue position ... -
Maintaining cross-domain objects and features in working memory : implications for storage in models of working memory
(University of Missouri--Columbia, 2007)A great deal of evidence, both from behavioral studies of cross-domain interference and from neuroimaging, suggests the need for a domain-general store in models of working memory. Baddeley included such a store in an ... -
The nature of time-based forgetting in immediate memory
(University of Missouri--Columbia, 2013)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The existence of time-based forgetting has been a controversial topic almost as long as memory has been investigated. In recent years there have been ... -
Reasoning and memory : multiple simple response strategies are used in visual working memory for color-orientation binding /
(University of Missouri--Columbia, 2017)Recent research has examined the how effectively people use the information in working memory (WM) when reasoning about that information is required in a recognition memory task (Chen and Cowan, 2013; Hardman and Cowan, ... -
Remembering and forgetting concurrently : new benefits of high working memory span
(University of Missouri--Columbia, 2009)Previous studies of working memory capacity have suggested that individuals with high capacities excel at several processes, including (1) distinguishing between information that is applicable versus irrelevant to the task ... -
Remembering complex objects in visual working memory
(University of Missouri--Columbia, 2013)Visual working memory stores stimuli from our environment as representations that can be accessed by high-level control processes. This study addresses a longstanding debate in the literature about whether storage limits ... -
Repetition effects in object switch costs: against a switch cost measure of a discrete focus of attention
(University of Missouri--Columbia, 2014)Object switch costs have been taken to index items in the focus of attention (e.g., Oberauer, 2005). They refer to savings in reaction time (RT) when a target object to which a response must be made is the same as the ... -
School-aged children's awareness of their own working memory contents
(University of Missouri--Columbia, 2018)Working memory researchers in psychology have long wondered about how the mind organizes the many different pieces of information that must be maintained at any one time in order that the individual may carry out daily ... -
A study of selective attention in young autistic subjects
(University of Missouri--Columbia, 2006)Pertinence level of the information in the unattended channel is supposed to play an important role in the process of selective attention in normal subjects (Norman, 1968). The developmental disorder of autism has been ... -
Young children's use of working memory for producing unfamiliar sentence structures
(University of Missouri--Columbia, 2021)In a previous study (here termed Study 1), we explored the effects of working memory loads on young children's recall of passive voice structures. We found that participants (n = 36) were more likely to use the passive ...