Mindfulness meditation practices (MMPs) are a subgroup of meditation practices which are receiving growing attention. The present paper reviews current evidence about the effects of MMPs on objective measures of cognitive functions. Five databases were searched. Twenty three studies providing measures of attention, memory, executive functions and further miscellaneous measures of cognition were included. Fifteen were controlled or randomized controlled studies and 8 were case–control studies. Overall, reviewed studies suggested that early phases of mindfulness training, which are more concerned with the development of focused attention, could be associated with significant improvements in selective and executive attention whereas the following phases, which are characterized by an open monitoring of internal and external stimuli, could be mainly associated with improved unfocused sustained attention abilities. Additionally, MMPs could enhance working memory capacity and some executive functions. However, many of the included studies show methodological limitations and negative results have been reported as well, plausibly reflecting differences in study design, study duration and patients' populations. Accordingly, even though findings here reviewed provided preliminary evidence suggesting that MMPs could enhance cognitive functions, available evidence should be considered with caution and further high quality studies investigating more standardized mindfulness meditation programs are needed.
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- Contemplation by Applied Subject,
- Psychiatry and Contemplation,
- Mindfulness-Based Stress Reduction / Cognitive Therapy,
- Psychotherapy and Contemplation,
- Health Care and Contemplation,
- Neuroscience and Contemplation,
- Cognition and Contemplation,
- Psychology and Contemplation,
- Science and Contemplation
<p>How do we, as humans, take in the feelings and thoughts of other people? Theory-of-Mind (ToM) and Embodied Simulation (ES) approaches hypothesize divergent neural and behavioral mechanisms underlying intersubjectivity. ToM investigators assert that humans take in the belief states and intentions of another person by holding "a theory of mind" that cognitively posits the other person's mental contents, with some experiments identifying the right temporo-parietal junction as a specific ToM brain region. ES theorists hypothesize that humans perceive the other's state of mind by simulating his/her actions, emotions, and goals in the "mirror neuron system" in the brain. A historical review suggests these understandings rely on opposing, dualist models of cognition and perception. William James's intervention on this earlier debate is informative in anticipating recent findings in low-level sensory neuroscience. Of specific interest are studies showing that intersubjectivity and low-level sensory attentional filtering are both processed in the same cortical area (the temporo-parietal junction) suggesting that the ability to entertain other minds may be related to the ability to perceive salient stimuli during attention-demanding tasks.</p>
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Cognitive deficits have been reported in children who experienced early neglect, especially children raised in institutionalized settings. Previous research suggests that early neglect may differentially affect the directional organization of white matter in the prefrontal cortex (PFC). This may be one mechanism to explain cognitive deficits associated with neglect. To test this idea, properties of white matter and neurocognitive performance were assessed in children who suffered early neglect and those raised in typical environments (n = 63, Mage = 11.75 years). As predicted, prefrontal white matter microstructure was affected, consistent with more diffuse organization, in children that suffered early neglect and this was related to neurocognitive deficits. Such findings underscore how early adversity may affect the PFC and explain cognitive deficits associated with neglect.
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A successful clinical trial is dependent on recruitment. Between December 2003 and February 2006, our team successfully enrolled 289 participants in a large, single-center, randomized placebo-controlled trial (RCT) studying the impact of the patient-doctor relationship and acupuncture on irritable bowel syndrome (IBS) patients. This paper reports on the effectiveness of standard recruitment methods such as physician referral, newspaper advertisements, fliers, audio and video media (radio and television commercials) as well as relatively new methods not previously extensively reported on such as internet ads, ads in mass-transit vehicles and movie theater previews. We also report the fraction of cost each method consumed and fraction of recruitment each method generated. Our cost per call from potential participants varied from $3–$103 and cost per enrollment participant varied from $12–$584. Using a novel metric, the efficacy index, we found that physician referrals and flyers were the most effective recruitment method in our trial. Despite some methods being more efficient than others, all methods contributed to the successful recruitment. The iterative use of the efficacy index during a recruitment campaign may be helpful to calibrate and focus on the most effective recruitment methods.
A successful clinical trial is dependent on recruitment. Between December 2003 and February 2006, our team successfully enrolled 289 participants in a large, single-center, randomized placebo-controlled trial (RCT) studying the impact of the patient-doctor relationship and acupuncture on irritable bowel syndrome (IBS) patients. This paper reports on the effectiveness of standard recruitment methods such as physician referral, newspaper advertisements, fliers, audio and video media (radio and television commercials) as well as relatively new methods not previously extensively reported on such as internet ads, ads in mass-transit vehicles and movie theater previews. We also report the fraction of cost each method consumed and fraction of recruitment each method generated. Our cost per call from potential participants varied from $3–$103 and cost per enrollment participant varied from $12–$584. Using a novel metric, the efficacy index, we found that physician referrals and flyers were the most effective recruitment method in our trial. Despite some methods being more efficient than others, all methods contributed to the successful recruitment. The iterative use of the efficacy index during a recruitment campaign may be helpful to calibrate and focus on the most effective recruitment methods.
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Studies on the effects of mindfulness interventions on mental health and behavioral problems in children show promising results, but are primarily conducted with selected samples of children. The few studies investigating school-based interventions used self-selected samples, provided training outside of the classroom, and did not report longer-term effects. The immediate and longer-term effects of a class-based mindfulness intervention for elementary school children were investigated as a primary prevention program (MindfulKids) to reduce stress and stress-related mental health and behavioral problems. Children (8–12 years) from three elementary schools participated. Classes were randomized to an immediate-intervention group (N = 95) or a waitlist-control group (N = 104), which received the intervention after a waitlist period. Twelve 30-min sessions were delivered in 6 weeks. At baseline, pretest, posttest, and follow-up, variables indicative of stress and metal well-being were assessed with children, variables indicative of mental health problems were assessed with parents, and teachers reported on class climate. Multilevel analysis revealed that there were no significant changes from baseline to pretest. Some primary prevention effects on stress and well-being were found directly after training and some became more apparent at follow-up. Effects on mental health problems also became apparent at follow-up. MindfulKids seems to have a primary preventive effect on stress, well-being, and behavior in schoolchildren, as reported by children and parents. Exploratory analysis revealed that children who ruminate more are affected differently by the intervention than children who ruminate less. It is concluded that mindfulness training can be incorporated in elementary schools at the class level, letting all children benefit from the intervention.
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This study describes the effects of an 8-week course in Mindfulness-Based Stress Reduction (MBSR; J. Kabat-Zinn, 1982, 1990) on affective symptoms (depression and anxiety), dysfunctional attitudes, and rumination. Given the focus of mindfulness meditation (MM) in modifying cognitive processes, it was hypothesized that the primary change in MM practice involves reductions in ruminative tendencies. We studied a sample of individuals with lifetime mood disorders who were assessed prior to and upon completion of an MBSR course. We also compared a waitlist sample matched with a subset of the MBSR completers. Overall, the results suggest that MM practice primarily leads to decreases in ruminative thinking, even after controlling for reductions in affective symptoms and dysfunctional beliefs.
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The authors address 2 questions about embarrassment. First, Is embarrassment a distinct emotion? The evidence indicates that the antecedents, experience, and display of embarrassment, and to a limited extent its autonomic physiology, are distinct from shame, guilt, and amusement and share the dynamic, temporal characteristics of emotion. Second, What are the theoretical accounts of embarrassment? Three accounts focus on the causes of embarrassment, positioning that it follows the loss of self-esteem, concern for others' evaluations, or absence of scripts to guide interactions. A fourth account focuses on the effects of the remedial actions of embarrassment, which correct preceding transgressions. A fifth account focuses on the functional parallels between embarrassment and nonhuman appeasement. The discussion focuses on unanswered questions about embarrassment.
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<p>Mindfulness meditation is an increasingly popular intervention for the treatment of physical illnesses and psychological difficulties. Using intervention strategies with mechanisms familiar to cognitive behavioral therapists, the principles and practice of mindfulness meditation offer promise for promoting many of the most basic elements of positive psychology. It is proposed that mindfulness meditation promotes positive adjustment by strengthening metacognitive skills and by changing schemas related to emotion, health, and illness. Additionally, the benefits of yoga as a mindfulness practice are explored. Even though much empirical work is needed to determine the parameters of mindfulness meditation's benefits, and the mechanisms by which it may achieve these benefits, theory and data thus far clearly suggest the promise of mindfulness as a link between positive psychology and cognitive behavioral therapies.</p>
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<p>Abstract The authors examined the effect of a 6-week mind/body intervention on college students' psychological distress, anxiety, and perception of stress. One hundred twenty-eight students were randomly assigned to an experimental group (n = 63) or a waitlist control group (n = 65). The experimental group received 6 90-minute group-training sessions in the relaxation response and cognitive behavioral skills. The Symptom Checklist-90-Revised, Spielberger State-Trait Anxiety Inventory, and the Perceived Stress Scale were used to assess the students' psychological state before and after the intervention. Ninety students (70% of the initial sample) completed the postassessment measure. Significantly greater reductions in psychological distress, state anxiety, and perceived stress were found in the experimental group. This brief mind/body training may be useful as a preventive intervention for college students, according to the authors, who called for further research to determine whether the observed treatment effect can be sustained over a longer period of time.</p>
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Metacognition refers to any knowledge or cognitive process that monitors or controls cognition. We highlight similarities between metacognitive and executive control functions, and ask how these processes might be implemented in the human brain. A review of brain imaging studies reveals a circuitry of attentional networks involved in these control processes, with its source located in midfrontal areas. These areas are active during conflict resolution, error correction, and emotional regulation. A developmental approach to the organization of the anatomy involved in executive control provides an added perspective on how these mechanisms are influenced by maturation and learning, and how they relate to metacognitive activity.
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Belief in one's ability to change is an important cognitive variable related to treatment gains. This study investigated pretreatment expectancy for anxiety change and early homework compliance in relation to initial and total cognitive change in group cognitive-behavioral therapy (CBT) for anxiety. Participants, who met diagnostic criteria for at least 1 anxiety disorder, completed 10 sessions of group CBT. Early homework compliance mediated the relationship between expectancy for anxiety change at baseline and initial change in CBT. In addition, initial cognitive symptom improvement mediated the relationship between homework compliance and posttreatment outcome. These results suggest that expectancy for change is an important cognitive variable that may provide the initial impetus and subsequent momentum for therapeutic involvement and gains. (PsycINFO Database Record (c) 2012 APA, all rights reserved)
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Mindfulness-based cognitive therapy (MBCT) is a relatively new intervention that has been developed to help people with recurrent depression stay well in the long term. Although there is evidence that depression impacts negatively on parenting, little is known regarding MBCT’s potential impact on parenting. This study used a qualitative design to explore how parents with a history of recurrent depression experience their relationships with their children one year after MBCT. We interviewed 16 parents who had participated in MBCT as part of a randomized controlled trial (RCT) (Kuyken et al., 2008). Thematic analysis was used to identify prevalent themes in parents’ accounts, including: (i) emotional reactivity and regulation; (ii) empathy and acceptance; (iii) involvement; (iv) emotional availability and comfort; and (v) recognition of own needs. Based on these exploratory findings, we suggest that some components of MBCT may help parents with a history of depression with emotional availability, emotion regulation and self-care and set out avenues of further research.
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<p>With his knack for making science intelligible for the layman, and his ability to illuminate scientific concepts through analogy and reference to personal experience, James Zull offers the reader an engrossing and coherent introduction to what neuroscience can tell us about cognitive development through experience, and its implications for education.Stating that educational change is underway and that the time is ripe to recognize that the primary objective of education is to understand human learning and that all other objectives depend on achieving this understanding, James Zull challenges the reader to focus on this purpose, first for her or himself, and then for those for whose learning they are responsible. The book is addressed to all learners and educators to the reader as self-educator embarked on the journey of lifelong learning, to the reader as parent, and to readers who are educators in schools or university settings, as well as mentors and trainers in the workplace.In this work, James Zull presents cognitive development as a journey taken by the brain, from an organ of organized cells, blood vessels, and chemicals at birth, through its shaping by experience and environment into potentially to the most powerful and exquisite force in the universe, the human mind.Zull begins his journey with sensory-motor learning, and how that leads to discovery, and discovery to emotion. He then describes how deeper learning develops, how symbolic systems such as language and numbers emerge as tools for thought, how memory builds a knowledge base, and how memory is then used to create ideas and solve problems. Along the way he prompts us to think of new ways to shape educational experiences from early in life through adulthood, informed by the insight that metacognition lies at the root of all learning.At a time when we can expect to change jobs and careers frequently during our lifetime, when technology is changing society at break-neck speed, and we have instant access to almost infinite information and opinion, he argues that self-knowledge, awareness of how and why we think as we do, and the ability to adapt and learn, are critical to our survival as individuals; and that the transformation of education, in the light of all this and what neuroscience can tell us, is a key element in future development of healthy and productive societies.</p>
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<p>In this commentary I discuss the integration of mindful procedures in cognitive therapy of generalized anxiety disorder (CAD) and attempt to answer questions concerning the effects of mindfulness on information processing and on mechanisms purported to maintain CAD in the meta-cognitive model of this disorder. Different techniques that promote mindfulness can be identified, including mindfulness meditation and attention training. These techniques are intended to disrupt repetitive styles of dysfunctional thinking. I argue that the effect of mindfulness strategies on information processing in emotional disorder can be conceptualized in meta-cognitive terms as (a) activating a meta-cognitive mode of processing; (b) disconnecting the influence of maladaptive beliefs on processing; (c) strengthening flexible responding to threat; and (d) strengthening meta-cognitive plans for controlling cognition. Although mindfulness meditation may have general treatment applications, the meta-cognitive model of CAD suggests caution in using this treatment in CAD. It is unclear which dimension of worry should be targeted, and mindfulness meditation does not contain information that can lead to unambiguous disconfirmation of erroneous beliefs about worry.</p>
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Recent studies have identified a distributed network of brain regions thought to support cognitive reappraisal processes underlying emotion regulation in response to affective images, including parieto-temporal regions and lateral/medial regions of prefrontal cortex (PFC). A number of these commonly activated regions are also known to underlie visuospatial attention and oculomotor control, which raises the possibility that people use attentional redeployment rather than, or in addition to, reappraisal as a strategy to regulate emotion. We predicted that a significant portion of the observed variance in brain activation during emotion regulation tasks would be associated with differences in how participants visually scan the images while regulating their emotions. We recorded brain activation using fMRI and quantified patterns of gaze fixation while participants increased or decreased their affective response to a set of affective images. fMRI results replicated previous findings on emotion regulation with regulation differences reflected in regions of PFC and the amygdala. In addition, our gaze fixation data revealed that when regulating, individuals changed their gaze patterns relative to a control condition. Furthermore, this variation in gaze fixation accounted for substantial amounts of variance in brain activation. These data point to the importance of controlling for gaze fixation in studies of emotion regulation that use visual stimuli.
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<p>Grounded cognition rejects traditional views that cognition is computation on amodal symbols in a modular system, independent of the brain's modal systems for perception, action, and introspection. Instead, grounded cognition proposes that modal simulations, bodily states, and situated action underlie cognition. Accumulating behavioral and neural evidence supporting this view is reviewed from research on perception, memory, knowledge, language, thought, social cognition, and development. Theories of grounded cognition are also reviewed, as are origins of the area and common misperceptions of it. Theoretical, empirical, and methodological issues are raised whose future treatment is likely to affect the growth and impact of grounded cognition.</p>
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Thirty years ago, grounded cognition had roots in philosophy, perception, cognitive linguistics, psycholinguistics, cognitive psychology, and cognitive neuropsychology. During the next 20 years, grounded cognition continued developing in these areas, and it also took new forms in robotics, cognitive ecology, cognitive neuroscience, and developmental psychology. In the past 10 years, research on grounded cognition has grown rapidly, especially in cognitive neuroscience, social neuroscience, cognitive psychology, social psychology, and developmental psychology. Currently, grounded cognition appears to be achieving increased acceptance throughout cognitive science, shifting from relatively minor status to increasing importance. Nevertheless, researchers wonder whether grounded mechanisms lie at the heart of the cognitive system or are peripheral to classic symbolic mechanisms. Although grounded cognition is currently dominated by demonstration experiments in the absence of well-developed theories, the area is likely to become increasingly theory driven over the next 30 years. Another likely development is the increased incorporation of grounding mechanisms into cognitive architectures and into accounts of classic cognitive phenomena. As this incorporation occurs, much functionality of these architectures and phenomena is likely to remain, along with many original mechanisms. Future theories of grounded cognition are likely to be heavily influenced by both cognitive neuroscience and social neuroscience, and also by developmental science and robotics. Aspects from the three major perspectives in cognitive science—classic symbolic architectures, statistical/dynamical systems, and grounded cognition—will probably be integrated increasingly in future theories, each capturing indispensable aspects of intelligence.
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BACKGROUND: Although it has been hypothesized that glucocorticoid hypersecretion in depressed patients leads to neuronal atrophy in the hippocampus, magnetic resonance imaging (MRI) -based morphometry studies of the hippocampus to date have produced mixed results.
METHODS: In our MRI study, hippocampal volumes were measured in 25 depressed patients (13 with melancholia and 12 without melancholia) and 15 control subjects.
RESULTS: No significant differences in hippocampus volumes were found between any of the subject groups, although within subjects right hippocampal volumes were found to be significantly larger than left hippocampal volumes. Additionally, right and total (left + right) hippocampal volumes in control and depressed subjects were found to be positively correlated with trait anxiety as measured by the state/trait anxiety inventory.
CONCLUSIONS: Because our subject group is younger than those in studies reporting hippocampal atrophy, we conclude that longitudinal studies will be necessary for investigation of the lifelong course of hippocampal volumetry.
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People construct ad hoc categories to achieve goals. For example, constructing the category of “things to sell at a garage sale” can be instrumental to achieving the goal of selling unwanted possessions. These categories differ from common categories (e.g., “fruit,” “furniture”) in that ad hoc categories violate the correlational structure of the environment and are not well established in memory. Regarding the latter property, the category concepts, concept-to-instance associations, and instance-to-concept associations structuring ad hoc categories are shown to be much less established in memory than those of common categories. Regardless of these differences, however, ad hoc categories possess graded structures (i.e., typicality gradients) as salient as those structuring common categories. This appears to be the result of a similarity comparison process that imposes graded structure on any category regardless of type.
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