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Handbook of mindfulness : theory, research, and practice
This handbook offers both a comprehensive review of the current science of mindfulness and a guide to its ongoing evolution. Scholars explore the topic in the context of contemporary psychological theories of attention, perceptual processing, motivation, and behaviour, as well as within a rich cross-disciplinary dialogue with the contemplative traditions.
Book
When less is more: mindfulness predicts adaptive affective responding to rejection via reduced prefrontal recruitment
Abstract
Social rejection is a distressing and painful event that many people must cope with on a frequent basis. Mindfulness—defined here as a mental state of receptive attentiveness to internal and external stimuli as they arise, moment-to-moment—may buffer such social distress. However, little research indicates whether mindful individuals adaptively regulate the distress of rejection—or the neural mechanisms underlying this potential capacity. To fill these gaps in the literature, participants reported their trait mindfulness and then completed a social rejection paradigm (Cyberball) while undergoing functional magnetic resonance imaging. Approximately 1 hour after the rejection incident, participants reported their level of distress during rejection (i.e. social distress). Mindfulness was associated with less distress during rejection. This relation was mediated by lower activation in the left ventrolateral prefrontal cortex during the rejection incident, a brain region reliably associated with the inhibition of negative affect. Mindfulness was also correlated with less functional connectivity between the left ventrolateral prefrontal cortex and the bilateral amygdala and the dorsal anterior cingulate cortex, which play a critical role in the generation of social distress. Mindfulness may relate to effective coping with rejection by not over-activating top-down regulatory mechanisms, potentially resulting in more effective long-term emotion-regulation.
Journal Article
Mindfulness training reduces loneliness and increases social contact in a randomized controlled trial
Loneliness and social isolation are a growing public health concern, yet there are few evidence-based interventions for mitigating these social risk factors. Accumulating evidence suggests that mindfulness interventions can improve social-relationship processes. However, the active ingredients of mindfulness training underlying these improvements are unclear. Developing mindfulness-specific skills—namely, (i) monitoring present-moment experiences with (ii) an orientation of acceptance—may change the way people perceive and relate toward others. We predicted that developing openness and acceptance toward present experiences is critical for reducing loneliness and increasing social contact and that removing acceptance-skills training from a mindfulness intervention would eliminate these benefits. In this dismantling trial, 153 community adults were randomly assigned to a 14-lesson smartphone-based intervention: (i) training in both monitoring and acceptance (Monitor+Accept), (ii) training in monitoring only (Monitor Only), or (iii) active control training. For 3 d before and after the intervention, ambulatory assessments were used to measure loneliness and social contact in daily life. Consistent with predictions, Monitor+Accept training reduced daily-life loneliness by 22% (d = 0.44, P = 0.0001) and increased social contact by two more interactions each day (d = 0.47, P = 0.001) and one more person each day (d = 0.39, P = 0.004), compared with both Monitor Only and control trainings. These findings describe a behavioral therapeutic target for improving social relationship functioning; by fostering equanimity with feelings of loneliness and social disconnect, acceptance-skills training may allow loneliness to dissipate and encourage greater engagement with others in daily life.
Journal Article
Dispositional mindfulness and the attenuation of neural responses to emotional stimuli
Considerable research has disclosed how cognitive reappraisals and the modulation of emotional responses promote successful emotion regulation. Less research has examined how the early processing of emotion-relevant stimuli may create divergent emotional response consequences. Mindfulness—a receptive, non-evaluative form of attention—is theorized to foster emotion regulation, and the present study examined whether individual differences in mindfulness would modulate neural responses associated with the early processing of affective stimuli. Focus was on the late positive potential (LPP) of the event-related brain potential to visual stimuli varying in emotional valence and arousal. This study first found, replicating past research, that high arousal images, particularly of an unpleasant type, elicited larger LPP responses. Second, the study found that more mindful individuals showed lower LPP responses to high arousal unpleasant images, even after controlling for trait attentional control. Conversely, two traits contrasting with mindfulness—neuroticism and negative affectivity—were associated with higher LPP responses to high arousal unpleasant images. Finally, mindfulness was also associated with lower LPP responses to motivationally salient pleasant images (erotica). These findings suggest that mindfulness modulates neural responses in an early phase of affective processing, and contribute to understanding how this quality of attention may promote healthy emotional functioning.
Journal Article
Adaptive neural reward processing during anticipation and receipt of monetary rewards in mindfulness meditators
Reward seeking is ubiquitous and adaptive in humans. But excessive reward seeking behavior, such as chasing monetary rewards, may lead to diminished subjective well-being. This study examined whether individuals trained in mindfulness meditation show neural evidence of lower susceptibility to monetary rewards. Seventy-eight participants (34 meditators, 44 matched controls) completed the monetary incentive delay task while undergoing functional magnetic resonance imaging. The groups performed equally on the task, but meditators showed lower neural activations in the caudate nucleus during reward anticipation, and elevated bilateral posterior insula activation during reward anticipation. Meditators also evidenced reduced activations in the ventromedial prefrontal cortex during reward receipt compared with controls. Connectivity parameters between the right caudate and bilateral anterior insula were attenuated in meditators during incentive anticipation. In summary, brain regions involved in reward processing—both during reward anticipation and receipt of reward—responded differently in mindfulness meditators than in nonmeditators, indicating that the former are less susceptible to monetary incentives.
Journal Article
Meta-analytic evidence that mindfulness training alters resting state default mode network connectivity
This meta-analysis sought to expand upon neurobiological models of mindfulness through investigation of inherent brain network connectivity outcomes, indexed via resting state functional connectivity (rsFC). We conducted a systematic review and meta-analysis of rsFC as an outcome of mindfulness training (MT) relative to control, with the hypothesis that MT would increase cross-network connectivity between nodes of the Default Mode Network (DMN), Salience Network (SN), and Frontoparietal Control Network (FPCN) as a mechanism of internally-oriented attentional control. Texts were identified from the databases: MEDLINE/PubMed, ERIC, PSYCINFO, ProQuest, Scopus, and Web of Sciences; and were screened for inclusion based on experimental/quasi-experimental trial design and use of mindfulness-based training interventions. RsFC effects were extracted from twelve studies (mindfulness
n
= 226; control
n
= 204). Voxel-based meta-analysis revealed significantly greater rsFC (MT > control) between the left middle cingulate (
Hedge’s g
= .234,
p
= 0.0288,
I
2
= 15.87), located within the SN, and the posterior cingulate cortex, a focal hub of the DMN. Egger’s test for publication bias was nonsignificant, bias = 2.17,
p
= 0.162. In support of our hypothesis, results suggest that MT targets internetwork (SN-DMN) connectivity implicated in the flexible control of internally-oriented attention.
Journal Article
Mindfulness: Theoretical Foundations and Evidence for its Salutary Effects
Interest in mindfulness and its enhancement has burgeoned in recent years. In this article, we discuss in detail the nature of mindfulness and its relation to other, established theories of attention and awareness in day-to-day life. We then examine theory and evidence for the role of mindfulness in curtailing negative functioning and enhancing positive outcomes in several important life domains, including mental health, physical health, behavioral regulation, and interpersonal relationships. The processes through which mindfulness is theorized to have its beneficial effects are then discussed, along with proposed directions for theoretical development and empirical research.
Journal Article
Are Psychological and Ecological Well-Being Compatible? The Role of Values, Mindfulness, and Lifestyle
Happiness and ecological well-being are often portrayed as conflictual pursuits, but they may actually be complementary. In samples of adolescents (Study 1) and adults (Study 2), we tested this proposition and examined the role of three factors in promoting both subjective well-being (SWB) and ecologically responsible behavior (ERB). In both studies, individuals higher in SWB reported more ERB. An intrinsic value orientation (Studies 1 and 2) and dispositional mindfulness (Study 2) related to higher SWB and ERB, while a lifestyle of voluntary simplicity (Study 2) related to higher ERB. Further analyses showed that the compatibility of SWB and ERB was explained by intrinsic values and mindfulness. These findings offer clues to a sustainable way of life that enhances both personal and collective well-being.
Journal Article
Weekends, Work, and Well-Being: Psychological Need Satisfactions and Day of the Week Effects on Mood, Vitality, and Physical Symptoms
We examine the effects of weekend versus weekday and work versus nonwork experiences on mood and other well-being indicators in a sample of 74 men and women employed in a wide variety of occupations. It was hypothesized that both weekends and nonworking times would be associated with enhanced well-being, and that these relations would be mediated by greater satisfaction of autonomy and relatedness needs. In addition, we hypothesized that much of the weekend effect would be accounted for by the work versus nonwork contrast, given that work activities are expected to be associated with a lower sense of autonomy and relatedness than nonwork activities. Results supported these hypotheses, showing that for both male and female workers, weekend and nonwork activities were associated with several indicators of well-being, and these relations were partially or fully mediated by basic psychological need satisfaction. The findings are discussed in terms of mood variability and the implications of free time and work for workers' well-being. [PUBLICATION ABSTRACT]
Journal Article
Mindfulness Enhances Episodic Memory Performance: Evidence from a Multimethod Investigation
Training in mindfulness, classically described as a receptive attentiveness to present events and experiences, has been shown to improve attention and working memory. Both are key to long-term memory formation, and the present three-study series used multiple methods to examine whether mindfulness would enhance episodic memory, a key form of long-term memory. In Study 1 (N = 143), a self-reported state of mindful attention predicted better recognition performance in the Remember-Know (R-K) paradigm. In Study 2 (N = 93), very brief training in a focused attention form of mindfulness also produced better recognition memory performance on the R-K task relative to a randomized, well-matched active control condition. Study 3 (N = 57) extended these findings by showing that relative to randomized active and inactive control conditions the effect of very brief mindfulness training generalized to free-recall memory performance. This study also found evidence for mediation of the mindfulness training-episodic memory relation by intrinsic motivation. These findings indicate that mindful attention can beneficially impact motivation and episodic memory, with potential implications for educational and occupational performance.
Journal Article