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251.
Fernandez-Duque D Knight M 《Journal of experimental psychology. Human perception and performance》2008,34(2):340-355
The cost of incongruent stimuli is reduced when conflict is expected. This series of experiments tested whether this improved performance is due to repetition priming or to enhanced cognitive control. Using a paradigm in which Word and Number Stroop alternated every trial, Experiment 1 assessed dynamic trial-to-trial changes. Incongruent trials led to task-specific reduction of conflict (trial n + 2) without cross-task modulation (trial n + 1), but this was fully explained by repetition priming. In contrast, an increased ratio of incongruent words did lead to sustained task-specific enhancement, above and beyond repetition priming (Experiment 2). Experiments 3 and 4 assessed the voluntary modulation of cognitive control: A cue predicted the congruency of the incoming trial, allowing participants to establish the correct mindset (Word Stroop in Experiment 3, Flanker task in Experiment 4). Preparing oneself to process an incongruent word (or flanker) enhanced conflict resolution in the subsequent Number Stroop, an example of cross-task modulation. Taken together, these experiments reveal the multifaceted aspects of conflict resolution: Trial-to-trial changes are often due to repetition priming; sustained modulations brought about by task demands are task specific; and voluntary modulations are task general. 相似文献
252.
Laurie K. McLay Karyn G. France Jacqueline Knight Neville M. Blampied Brent Hastie 《Behavioral Interventions》2019,34(1):30-51
This study investigated the effectiveness of functional behavioral assessment (FBA)—informed interventions for sleep problems, particularly co‐sleeping, in children with autism spectrum disorder (ASD). Seven children, who exhibited multiple sleep problems including unwanted co‐sleeping, participated. FBA, based on information derived from interviews and parent‐recorded sleep diaries, was used to develop individualized case formulations upon which multicomponent, parent‐implemented interventions were based. These were evaluated using a single‐case, non‐concurrent multiple‐baseline‐across‐participants design. Improvements were observed across all sleep problems, including the elimination of co‐sleeping. Gains were maintained at follow‐up for five out of seven children, though two children did not complete intervention. Parents reported high levels of satisfaction with the program. FBA‐based interventions for sleep problems in children with ASD and their clinical implications are further discussed. 相似文献
253.
Caroline Knight Malcolm Patterson Jeremy Dawson 《European Journal of Work and Organizational Psychology》2019,28(3):348-372
Work engagement is associated with important individual and organisational outcomes (e.g. employee health and well-being, performance). This narrative systematic review aims to synthesise the increasing number of work engagement interventions and inform future research by exploring: (1) the specific intervention foci, delivery methods and content of engagement interventions; (2) intervention effectiveness; and (3) underlying mediators and moderators. A systematic search for interventions employing a validated engagement measure revealed 40 studies. Five were personal resource building, twelve job resource building, three leadership training, eighteen health promotion, and two job and personal resource building. Twenty (50%) studies observed significant positive effects on work engagement, two (5%) had a negative effect, and eighteen (45%) had no effect. Job and personal resources, job demands and well-being were important mediators. Moderators included the specific intervention focus and delivery method, employee participation, manager support, and intervention level (top-down vs bottom-up). Bottom-up interventions, and job crafting and mindfulness interventions particularly, were most successful. Implementation difficulties were common, including poor response and attrition rates, and adverse factors (e.g. organisational restructuring, redundancy, economic downturn). We highlight implications for research and practice and stress the need to test underlying theories to build knowledge around how, why, and when interventions work. 相似文献
254.
Knight M Seymour TL Gaunt JT Baker C Nesmith K Mather M 《Emotion (Washington, D.C.)》2007,7(4):705-714
Previous findings reveal that older adults favor positive over negative stimuli in both memory and attention (for a review, see Mather & Carstensen, 2005). This study used eye tracking to investigate the role of cognitive control in older adults' selective visual attention. Younger and older adults viewed emotional-neutral and emotional-emotional pairs of faces and pictures while their gaze patterns were recorded under full or divided attention conditions. Replicating previous eye-tracking findings, older adults allocated less of their visual attention to negative stimuli in negative-neutral stimulus pairings in the full attention condition than younger adults did. However, as predicted by a cognitive-control-based account of the positivity effect in older adults' information processing tendencies (Mather & Knight, 2005), older adults' tendency to avoid negative stimuli was reversed in the divided attention condition. Compared with younger adults, older adults' limited attentional resources were more likely to be drawn to negative stimuli when they were distracted. These findings indicate that emotional goals can have unintended consequences when cognitive control mechanisms are not fully available. 相似文献
255.
Knight DC Smith CN Cheng DT Stein EA Helmstetter FJ 《Cognitive, affective & behavioral neuroscience》2004,4(3):317-325
Previous functional magnetic resonance imaging (fMRI) studies have characterized brain systems involved in conditional response
acquisition during Pavlovian fear conditioning. However, the functional neuroanatomy underlying the extinction of human conditional
fear remains largely undetermined. The present study used fMRI to examine brain activity during acquisition and extinction
of fear conditioning. During the acquisition phase, participants were either exposed to light (CS) presentations that signaled
a brief electrical stimulation (paired group) or received light presentations that did not serve as a warning signal (control
group). During the extinction phase, half of the paired group subjects continued to receive the same treatment, whereas the
remainder received light alone. Control subjects also received light alone during the extinction phase. Changes in metabolic
activity within the amygdala and hippocampus support the involvement of these regions in each of the procedural phases of
fear conditioning. Hippocampal activity developed during acquisition of the fear response. Amygdala activity increased whenever
experimental contingencies were altered, suggesting that this region is involved in processing changes in environmental relationships.
The present data show learning-related amygdala and hippocampal activity during human Pavlovian fear conditioning and suggest
that the amygdala is particularly important for forming new associations as relationships between stimuli change. 相似文献
256.
Knight TA 《Psychological reports》2003,93(1):66-68
Instructions for the Matrix Reasoning subtest of the WAIS-III do not communicate to examinees that the subtest is untimed. The present study examined what percentage of participants (34 women, 26 men, M age = 20.1; 55 Caucasian, 3 African American, 2 Hispanic) made the assumption that Matrix Reasoning was timed, and its effect on examinees' scores. 55% of participants receiving standard instructions retrospectively reported assuming the subtest was timed, and those who did not assume Matrix Reasoning was timed scored significantly higher than participants who did. Participants receiving additional instructions that clarified the untimed nature of Matrix Reasoning scored significantly higher than those receiving standard instructions who believed the subtest was timed. 相似文献
257.
Visual implicit memory in the left hemisphere: evidence from patients with callosotomies and right occipital lobe lesions 总被引:2,自引:0,他引:2
Yonelinas AP Kroll NE Baynes K Dobbins IG Frederick CM Knight RT Gazzaniga MS 《Psychological science》2001,12(4):293-298
Identification of visually presented objects and words is facilitated by implicit memory for past visual experiences with those items. Several behavioral and neuroimaging studies suggest that this form of memory is dependent on perceptual processes localized in the right occipital lobe. We tested this claim by examining implicit memory in patients with extensive right occipital lobe lesions, using lexical-decision, mirror-reading, picture-fragment, and word-fragment-completion tests, and found that these patients exhibited normal levels of priming. We also examined implicit memory in patients with complete callosotomies, using standard and divided-visual-field word-fragment-completion procedures, and found that the isolated left hemisphere exhibited normal priming effects. The results indicate that the right occipital lobe does not play a necessary role in visual implicit memory, and that the isolated left hemisphere can support normal levels of visual priming in a variety of tasks. 相似文献
258.
259.
260.
Hazel Prelow Marcia Michaels Leticia Reyes George Knight Manuel Barrera Jr. 《Anxiety, stress, and coping》2013,26(2):135-147
We examined the cross-ethnic and cross-language equivalence of the Children's Coping Strategies Checklist (Ayers, T.S., Sandler, I.N., West, S.G. and Roosa, M.W. (1996). A dispositional and situational assessment of children's coping: Testing alternative models of coping. Journal of Personality , 64 (4), 923-958) by assessing item, functional, and scalar equivalence in a sample of 319 European American, African American, and Mexican American adolescents from low-income inner-city families. Depression, as measured by Children's Depression Inventory, was the criterion in the analyses of scalar equivalence. The results suggest considerable cross-ethnic and cross-language measurement equivalence of the Children's Coping Strategies Checklist. The findings also suggest some caution in using the Children's Depression Inventory in comparative studies of African American and Mexican American adolescents or in studies that treat these groups as homogeneous samples. 相似文献