Publications by authors named "Keith Hutchison"

Article Synopsis
  • The study examined how collaborative learning affects memory retention over time.
  • Participants recalled word lists and prose individually or collaboratively after learning and completed further tests after delays of 5 minutes, 48 hours, or 1 week.
  • Results indicated that collaboration initially reduced correct recall (collaborative inhibition) but improved long-term accurate recall for up to a week, while the benefits for reducing false recall did not last.
  • These findings suggest that collaboration has a lasting positive impact on true memory recall, driven by processes of reexposure and error correction.
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Article Synopsis
  • - The study investigates how physical fatigue and cognitive performance impact knee mechanics, which could increase the risk of Anterior Cruciate Ligament (ACL) injuries during challenging movements.
  • - Researchers hypothesized that fatigue would negatively influence knee mechanics and that there would be a correlation between reduced cognitive function and these changes in knee mechanics.
  • - Results indicated that as fatigue increased, knee flexion decreased, and poorer cognitive performance (like attentional control and reaction time) was linked to altered knee angles, highlighting the interplay between fatigue, cognition, and knee injury risk.
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Context: Does lower baseline cognitive function predispose athletes to ACL injury risk, especially when performing unplanned or dual-task movements?

Objective: To evaluate the association between cognitive function and biomechanics related to ACL injuries during cognitively challenging sports movements.

Data Sources: PubMed (MEDLINE), Web of Science, Scopus, and SciELO databases were searched; additional hand searching was also conducted.

Study Selection: The following inclusion criteria had to be met: participants completed (1) a neurocognitive test, (2) a cognitively challenging sport-related task involving lower limbs, and (3) a biomechanical analysis.

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Previous research has shown that Stroop effects interact with working memory capacity (WMC) more strongly with lists of mostly congruent items. Although the predominant explanation for this relationship is goal maintenance, some research has challenged whether listwide effects truly reflect goal-maintenance abilities. The current study improved upon previous methodology by using both within-subject and between-subjects manipulations of goal reminder, increasing both the number of trials between reminders and the total length of the task to allow for greater goal neglect, and more precisely maintaining congruency proportion within each block.

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Collaborative inhibition (reduced recall in collaborative vs. nominal groups) is a robust phenomenon. However, it is possible that not everyone is as susceptible to collaborative inhibition, such as those higher in working memory capacity (WMC).

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Mycobacterium abscessus is an emerging pathogen of concern in cystic fibrosis and immunocompromised patients and is considered one of the most drug-resistant mycobacteria. The majority of clinical Mycobacterium abscessus isolates carry 1 or more prophages that are hypothesized to contribute to virulence and bacterial fitness. The prophage McProf was identified in the genome of the Bergey strain of Mycobacterium chelonae and is distinct from previously described prophages of Mycobacterium abscessus.

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We sought to better understand the influence of cognitive perturbations on transient aspects of postural control. Twenty healthy, younger adults had their postural control assessed during eyes open quiet stance. Participants completed three different conditions that either had no cognitive perturbation present, an easy cognitive perturbation (i.

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Attention control is often examined behaviorally by measuring task performance and self-reported mind wandering. However, recent studies have also used pupillometry to measure task engagement versus task disengagement/mind wandering. In the current study, we investigated participants' ability to engage versus relax attention control in anticipation of hard (antisaccade) versus easy (prosaccade) trials within a saccade task, creating a "Cue-Evoked" Pupillary Response (CEPR).

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Cognitive function plays a role in understanding noncontact anterior cruciate ligament injuries, but the research into how cognitive function influences sport-specific movements is underdeveloped. The purpose of this study was to determine how various cognitive tasks influenced dual-task jump-landing performance along with how individuals' baseline cognitive ability mediated these relationships. Forty female recreational soccer and basketball players completed baseline cognitive function assessments and dual-task jump landings.

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Background: The global rise in the incidence of non-tuberculosis mycobacterial infections is of increasing concern due their high levels of intrinsic antibiotic resistance. Although integrated viral genomes, called prophage, are linked to increased antibiotic resistance in some bacterial species, we know little of their role in mycobacterial drug resistance.

Results: We present here for the first time, evidence of increased antibiotic resistance and expression of intrinsic antibiotic resistance genes in a strain of Mycobacterium chelonae carrying prophage.

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Previous research has shown that list-wide effects in the Stroop task interact with working memory capacity (WMC). The predominant explanation for this relationship is goal maintenance. However, some researchers have challenged whether list-wide effects truly reflect goal-maintenance abilities.

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This study examined the influence of same-age and mixed-age dyads on the collaborative inhibition effect (reduced recall in collaborative groups compared to the combined recall of the same number people who recall individually). Younger (age 18-25) and older (age 65+) adults recalled categorized word lists alone or in collaboration with a same-age or a different-age partner. On an initial recall test, the magnitude of collaborative inhibition for veridical recall was similar across dyads, regardless of age.

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We investigated participants' task set preparation by measuring changes in pupil diameter during a blank interval as they prepared for an easy (i.e., prosaccade) or difficult (i.

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Background: Identifying athletes at an increased risk of injury is a promising approach to improve the effect of injury prevention interventions; however, it requires first identifying the potential athlete-specific risk factors. Cognitive ability was recently shown to correlate with noncontact anterior cruciate ligament injury rates and lower extremity mechanics, marking an underexplored area. A better understanding of how individuals' cognitive ability is associated with neuromuscular control during sport-specific tasks may improve injury prevention.

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Many researchers have tried to predict semantic priming effects using a myriad of variables (e.g., prime-target associative strength or co-occurrence frequency).

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This project investigated the underlying mechanisms that boost false remember responses when participants receive study words that are both semantically and phonologically similar to a critical lure. Participants completed a memory task in which they were presented with a list of words all associated with a critical lure. Included within the list of semantic associates was a target that was either semantically associated (e.

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Temperate phages are common, and prophages are abundant residents of sequenced bacterial genomes. Mycobacteriophages are viruses that infect mycobacterial hosts including Mycobacterium tuberculosis and Mycobacterium smegmatis, encompass substantial genetic diversity and are commonly temperate. Characterization of ten Cluster N temperate mycobacteriophages revealed at least five distinct prophage-expressed viral defence systems that interfere with the infection of lytic and temperate phages that are either closely related (homotypic defence) or unrelated (heterotypic defence) to the prophage.

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We examined whether 2 types of interpolated tasks (i.e., retrieval-practice via free recall or guessing a missing critical item) improved final recognition for related and unrelated word lists relative to restudying or completing a filler task.

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Semantic priming, the phenomenon that a target is recognized faster if it is preceded by a semantically related prime, is a well-established effect. However, the mechanisms producing semantic priming are subject of debate. Several theories assume that the underlying processes are controllable and tuned to prime utility.

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The item-specific proportion congruency (ISPC) effect refers to the reduction in the Stroop effect for items (e.g., words) that mostly appear in an incongruent format, as compared to items that mostly appear in a congruent format.

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In the speeded word fragment completion task, participants have to complete fragments such as tom_to as quickly and accurately as possible. Previous work has shown that this paradigm can successfully capture subtle priming effects (Heyman, De Deyne, Hutchison, & Storms Behavior Research Methods, 47, 580-606, 2015). In addition, it has several advantages over the widely used lexical decision task.

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Younger and older adults studied lists of words directly (e.g., creek, water) or indirectly (e.

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The current study examines the underlying processes of semantic priming using the largest priming database available (i.e., Semantic Priming Project, Hutchison et al.

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In two experiments, we examined veridical and false memory for lists of associates from two meanings (e.g., stumble, trip, harvest, pumpkin, etc.

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The present research examines the nature of the different processes that have been proposed to underlie semantic priming. Specifically, it has been argued that priming arises as a result of automatic target activation and/or the use of strategies like prospective expectancy generation and retrospective semantic matching. This article investigates the extent that these processes rely on cognitive resources by experimentally manipulating working memory load.

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