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Running Head: EXPLORING EXPECTED OUTCOMES 1 Exploring Expected Structural and Functional Outcomes of Mindfulness Based Stress Reduction (MBSR) Training Kyri Barilone Johnson & Wales University
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Page 1: RSCH4050 Final Project

Running Head: EXPLORING EXPECTED OUTCOMES 1  

Exploring Expected Structural and Functional Outcomes of

Mindfulness Based Stress Reduction (MBSR) Training

Kyri Barilone

Johnson & Wales University

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EXPLORING EXPECTED OUTCOMES 2

Exploring Expected Structural and Functional Outcomes of

Mindfulness Based Stress Reduction (MBSR) Training

Introduction

As the popularity of Eastern medicine practices and holistic health models are increasing

in Western culture, the use of mindfulness training is also rapidly increasing. As it is traditionally

referred to in Western psychological theory, Mindfulness Based Stress Reduction (MBSR) is the

process of working to gain moment-to-moment awareness in order to increase the ability to cope

in stressful situations (Kabat-Zinn, 1990). To do so, participants generally aim to observe

thoughts, feelings, and sensations in the present moment without judgment (Kabat-Zinn, 1990)

that is typically seen in the form of labeling these experiences as “good” or “bad.”

However, while MBSR is generally considered effective as a result of being linked to

positive changes in depression, anxiety, stress, empathy, self-compassion, etc. (Dobkin &

Hutchinson, 2013), there is insufficient data to support clinically accepted outcomes based on

neurological evidence. More specifically, there is a lack of empirical data to support common

structural and functional brain changes, and the resulting behavioral and cognitive changes,

associated with MBSR practice.

Background

Programs and Efficacy

While the traditional Kabat-Zinn (1990) model of MBSR training is comprised of eight

weekly 2-2½ hour sessions as well as a six hour retreat toward the end of the program, there are

numerous variations on this program that do not have a significant effect on outcomes.

Additionally, while the traditional model consists of sitting meditation, progressive awareness or

muscle relaxation, and gentle yoga (Kabat-Zinn, 1990), other mindfulness activities have also

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proven effective. As such, mindfulness programs can be modified in order to accommodate

populations with various needs and assets.

As the MBSR program was designed to provide enough time for participants to grasp the

concepts of mindfulness and become autonomous in practicing these skills (Kabat-Zinn, 1982),

there is little empirical evidence regarding the required length to achieve these outcomes.

Because a common barrier to treatment is lack of time, one study on mindfulness was aimed at

understanding whether a shortened program could provide the same benefits as the traditional

eight-week model (Carmody & Baer, 2009). While the traditional model is still the most well

studied and empirically backed, this study demonstrated that mean contact hours and mean effect

were not significantly correlated. As such, the researchers argued that shorter programs or

programs that are modified to include fewer contact hours may be beneficial for populations who

do not have the time to complete a traditional eight-week model (Carmody & Baer, 2009). For

many individuals who feel they do not have the time to devote to the original eight-week model,

this information may provide a renewed opportunity for treatment.

Additionally, while mindfulness is often regarded as a solitary task, the idea of working

with others to improve MBSR skills has also proven an effective method. In a study that

explored a community-based approach to developing an MBSR program for parents and

caretakers of children with disabilities, caregivers partnered with researchers to develop a

program unique to their needs (Bazzano et al., 2015). In order to decrease stress in parents and

caretakers who may be overwhelmed with their responsibilities and anxiety over past and future

traumas, a curriculum was designed consisting of two daily class offerings each including

meditation practice, discussion around stressors and challenges, and gentle stretching (Bazzano

et al., 2015). As results showed a significant reduction in stress at the end of the eight-week trial

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as well as at two months after the conclusion of the trial (Bazzano et al., 2015), it is clear that

this integration of a community-based approach is not a constraint to the efficacy of MBSR

training.

However, due to the lack of empirical data on long-term outcomes of Mindfulness Based

Stress Reduction, a group of researchers suggested a longitudinal study (Sarenmalm et al., 2013).

In this clinical randomized controlled trial, patients diagnosed with breast cancer would be

assigned to one of three groups: MBSR Intervention I (weekly group session and self instruction

program), MBSR Intervention II (self-instruction program only), or a control group (no MBSR

instruction) (Sarenmalm et al., 2013). In order to study the long-term effects, data would be

collected on participant well-being and immune response at baseline, 3, 6, and 12 months as well

as yearly for an additional four years in order to gain a long-term view of the changes related to

mindfulness that are not often depicted.

Of course, the most important factor in assessing an MBSR program is its efficacy. While

each MBSR program and study will inevitably result in different outcomes, there is a great deal

of consistency regarding how well MBSR programs work at achieving their desired outcomes. In

one study designed to examine potential psychological health benefits of a five-week MBSR

program, a curriculum consisting of two hours weekly for five weeks was implemented (Bergen-

Cico, Possemato, & Cheon, 2013). The curriculum included five hours of practice (sitting

meditation/breath work, body scan, moving meditation), and five hours of discussion integrated

into an academic course on addictive behaviors. At the close of the trial, results on the Kentucky

Inventory of Mindfulness Scale (KIMS) showed a statistically significant increase in

mindfulness (Bergen-Cico et al., 2013). However, while psychological distress described by trait

anxiety score was not statistically significant, psychological health improvement was

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demonstrated by statistically significant improvement in scores for Observing, Acceptance,

Common Humanity, Isolation, and Self-judgment (Bergen-Cico et al., 2013).

While many studies focus on the observable effects of MBSR on participants, few focus

on the reasons these effects take place. As such, another study explored the relationship between

spirituality, mindfulness practice, and mental health (Greeson et al., 2011). While the original

hypothesis that changes in mindfulness following an MBSR program might explain changes in

spirituality, and therefore changes in quality of life, was not entirely supported by the results,

another model was consider a better fit. Instead, it was determined that MBSR-related increases

in spirituality and increases in mindfulness could have a reciprocal relationship with one another

(Greeson et al., 2011). As such, it is a possibility that mindfulness practices based on some

aspect of spirituality may have a positive effect on participant quality of life.

Subjective Outcomes

Because MBSR is associated with stress management and decreased arousal, a study was

conducted in order to assess the efficacy of MBSR in treating these symptoms in relation to

insomnia (Cincotta, Gehrman, Gooneratne & Baime, 2011). After undergoing the traditional

eight-week program of MBSR, participants showed lower levels of pre-sleep arousal and

insomnia symptoms based on self-reports (Cincotta et al., 2011). Although there were no

significant objective changes as measured by actigraphy, the results showed that subjective

changes alone might lead to perceived relief from insomnia symptoms (Cincotta et al., 2011),

thus allowing insomnia patients to have an easier time falling asleep.

Similarly, because cancer patients often experience sleep disturbance for years after

treatment, another study was aimed at discovering whether an MBSR intervention could improve

sleep quality (Andersen et al., 2013). Participants were randomly assigned to either an MBSR

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program consisting of psycho-education, meditation, and gentle yoga or a control group where

they receive treatment as usual; using the Medical Outcome Study sleep scale, sleep quality was

measured at baseline, at the conclusion of the treatment, and at six and twelve months post-

treatment (Andersen et al., 2013). The results showed a significant improvement in sleep quality

post treatment, with the highest increase seen in those participants with the most severe

symptoms, but no long term changes (Andersen et al., 2013), which is evidence that continued

mindfulness practice could have a lasting effect on the sleep quality of patients suffering from

cancer and other medical conditions that result in sleep disruptions.

Unfortunately, one systematic review of MBSR for low back pain based on three

randomized controlled trials found mixed results with one set of findings showing short-term

improvements in pain intensity and disability and another showing no short-term or long-term

improvements (Cramer, Haller, Lauche & Dobos, 2012). However, two additional larger RCTs

found short-term improvements of pain acceptance (Cramer et al., 2012). Overall, while these

findings provide inconclusive evidence for the efficacy of MBSR as a treatment for low back

pain, they did show a possibility that MBSR is effective in improving pain acceptance (Cramer et

al., 2012). Though this would not provide an actual decrease in pain, it demonstrates that MBSR

may provide some relief for individuals suffering from chronic pain.

Another area of mental health that has seen improvement through MBSR is Post

Traumatic Stress Disorder. In a study on the efficacy of mindfulness on PTSD symptoms in

survivors of childhood sexual abuse, adult survivors of childhood sexual abuse were recruited for

an eight-week program which consisted of 2.5-3 hour classes on sitting meditation, progressive

body awareness, walking meditation, and gentle yoga (Kimbrough, Magyari, Langenberg,

Chesney & Berman, 2010). Additionally, participants attended a 5-hour silent retreat and were

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asked to practice informal mindfulness during daily activities in their home lives. Measurements

taken at baseline, 4 8, and 24 weeks showed statistically significant improvements in depressive

symptoms (65%) as well as improvement in the PTSD symptom criteria of avoidance/numbing

(Kimbrough et al., 2010). While this specific study focused on PTSD in childhood sexual abuse

survivors, the same principles could be applied to individuals suffering from PTSD for a variety

of reasons.

Similarly, in one study participants underwent the traditional Kabat-Zinn (1990) eight-

week MBSR program model while being assessed daily for changes in mindfulness, positive

affect, and negative affect (Snippe, Nyklíček, Schroevers & Bos, 2015). As was expected by the

researchers, the outcomes showed that changes in mindfulness precede rather than follow

changes in affect on a daily basis (Snippe et al., 2015). Additionally, the same-day correlations

between mindfulness and positive and negative affect were 0.45 and -0.47 (Snippe et al., 2015).

Interestingly, this data might mean that mindfulness practice is related to reduced negative affect

at the same or an increased degree to which it is related to increased positive affect.

Another study focused on individuals who had experienced a stroke or traumatic brain

injury and had been physically rehabilitated with no residual gross impairments (Johansson,

Bjuhr & Rönnbäck, 2012). Because these individuals suffer from increased mental fatigue from

which there was previously no effective treatment, researchers hoped that MBSR could improve

mental stamina in these patients. At the close of the trial, researchers were able to discern that

participation in the eight-week MBSR program did result in significant improvement on a self-

assessment on mental fatigue as well as on two neurological tests: Digit Symbol-Coding and the

Trail Making Test (Johansson et al., 2012). While this specific study focused on mental fatigue

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in stroke and traumatic brain injury patients, these same improvements might also bee seen in

individuals who suffer from mental fatigue for a variety of other reasons.

Objective Outcomes

In order to examine the physiological effects of an MBSR program on cardiovascular and

cortisol activity during acute stress, a sample of healthy individuals with self-reported elevated

stress levels were randomly assigned to an MBSR group and a waitlist control group (Nyklíček,

Mommersteeg, Van Beugen, Ramakers & Van Boxtel, 2013). After using the standard MBSR

intervention (Kabat-Zinn, 1990), participants participated in a laboratory stress simulation using

mental arithmetic and speech tasks where measurements were taken consisting of systolic and

diastolic blood pressure, heart rate, heart rate variability, and salivary cortisol (Nyklíček et al.,

2013). After controlling for age, sex, body mass index, and beta-blockers, results showed a

significant decrease in overall systolic and diastolic blood pressure as well as decreased

variability in blood pressure (Nyklíček et al., 2013). While no other physiological changes were

significant, these findings alone may prove that mindfulness training is an effective

complementary therapy for patients suffering from hypertension or increased variability in blood

pressure.

In another study designed to investigate the medical benefits of MBSR, effects of MBSR

on the autonomic nervous system and the cardiovascular system were investigated using two

studies based on various MBSR techniques (Ditto, Eclache & Goldman, 2006). In Study 1,

participants were randomly assigned to a meditation group, a progressive muscle relaxation

group, or a waitlist control group then participated in two laboratory sessions four weeks apart

where they practiced their assigned technique; in Study 2, participants participated in two

laboratory sessions where they either practiced meditation or listened to an audiotape of a

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popular novel (Ditto et al., 2006). In both studies, heart rate, cardiac respiratory sinus arrhythmia

(RSA), and blood pressure were monitored. Results showed greatest increase in RSA during

meditation and a decrease in cardiac pre-ejection period, which may explain how sympathetic

and parasympathetic activities account for the lack of change in heart rate (Ditto et al., 2006),

which is often questioned in trials regarding MBSR effects on cardiology such as Nyklíček et al.

(2013) as mentioned above.

MBSR may also be effective in treating numerous other medical conditions. For example,

in another study, a group of post-treatment breast cancer survivors were randomly assigned to

either an MBSR group or a “Usual Care” control group (Lengacher et al., 2014). With measures

taken for perceived stress, depressive symptoms, state anxiety, trait anxiety, and aggregate

mental and physical health using various assessments at baseline and six weeks, results showed a

significant reduction of fear of recurrence and an increase in physical functioning which led to a

decrease in perceived stress and anxiety (Lengacher et al, 2014). As these results demonstrate,

the decrease in fear of recurrence as a result of mindfulness training was related to improved

physical functioning, a concrete example of the potential physical health benefits of MBSR

training.

Mindfulness Neuroscience

While the functional magnetic resonance imaging (fMRI) technique has often been used

to assess changes associated with mindfulness practice, it is suggested by some researchers that

this technique be combined with other measures in order to get a more comprehensive

understanding of the benefits of MBSR (Tang & Posner, 2013). However, using the fMRI

technique, it has been noted that there are some common changes associated with mindfulness

training: in the first stage of mindfulness training, attentional control is practiced which results in

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changes to the lateral prefrontal cortex and parietal areas; in the intermediate stage of

mindfulness practice, diverse brain networks are utilized in order to deal with distraction; finally,

in the last stage of mindfulness practice, meditation is sustained through the anterior cingulate

cortex, which is accompanied by high parasympathetic activity (Tang & Posner, 2013). In

theory, what this means is that over time, mindfulness works on a variety of neurological

systems and structures in order to increase attention in the prefrontal cortex as well as to increase

the calming effects of the parasympathetic nervous system over time.

Finally, while it has often been thought that intelligence is a static ability, recent

psychological research has shown that sensorimotor and emotional awareness may be linked to

cognition and therefore intelligence (Heydenfeldt, Herkenhoff & Coe, 2011). By the same vein,

this is drawing a link between mindfulness training and neuroplasticity. According to Jaeggi et

al., working memory, or the ability to think in the moment, is related to an important element of

attaining mind fitness (as cited in Heydenfeldt et al., 2011). Moreover, according to Stanley and

Jha, the Mind Fitness Training Institute has developed a Mindfulness-Based Mind Fitness

Training (MMFT) program designed to increase performance in military personnel working in

high-stress environments by utilizing mindfulness practice to increase situational awareness,

adaptability, and mental agility (as cited in Heydenfeldt et al., 2011). As programs such as these

become more visible, the use of mindfulness for a variety of facets of mind fitness will surely

follow.

While the current research on mindfulness provides conclusive evidence for the efficacy

of MBSR based on various criteria, it does not provide a conclusive understanding of the

neurological changes to be expected from mindfulness training. As neuropsychology is quickly

becoming the new standard in evidence-based mental health practice, this study is aimed at

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describing the expected structural and functional changes resulting from MBSR practice as well

as the related changes in behavior and cognition.

Method

Participants

After obtaining approval from the Institutional Review Board, participants will be

recruited through a local recruitment campaign including fliers, online postings, and

advertisements in local publications. Respondents will be screened for the following criteria as

adapted from Robins, Keng, Ekblad and Brantley (2012): (1) at least eighteen years of age but

below sixty-five years of age; (2) no prior participation in an MBSR course; (3) no regular

(defined as thirty minutes or more per week) meditative practice including meditation, yoga, or

contemplative prayer; (4) able to attend MBSR practices at designated times; (5) willing to

commit to practice of mindfulness during daily activities; (6) able and willing to undergo

neurological imaging including an fMRI, and MRI, and a PET scan at designated times over a

period of one year.

Materials/Measures

Following the completion of a demographics questionnaire, two assessments will be used

to evaluate changes in mindfulness. The first is a questionnaire designed to assess the twelve

qualities of mindfulness described by Snyder (2002, p. 640): acceptance (open to seeing and

acknowledging things as they are in the present moment); loving kindness (a quality embodying

benevolence, compassion, forgiveness, and cherishing); generosity (giving in the present

moment without attachment to gain or return); non-judgment (observing the present moment by

moment without evaluation or categorization); empathy (understanding the perspective,

emotions, actions, or reactions or another and communicating this to them); letting go (not

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holding on to thoughts, feelings, or experiences); openness (seeing things as if for the first time);

trust (trusting that life is unfolding as it is supposed to); gratitude (the quality of reverence,

appreciating, and being thankful for the present moment); non-striving (remaining unattached to

outcome or achievement); patience (allowing things to unfold in their time); and gentleness

(characterized by a soft, considerate, and tender nature).

The second assessment is based on the Baer, Smith, Hopkins, Krietemeyer, and Toney

self-report questionnaire (as cited in Heydenfeldt et al., 2011) measures five facets of mindful

behavior: nonreactivity to inner experience; observing/noticing/attending to sensations,

perceptions, thoughts, and feelings; acting with awareness/automatic

pilot/concentration/nondistraction; describing/labeling with words; and nonjudging of

experience. In conjunction, these two assessments will allow for both quantitative and qualitative

analysis in changes cognition and behavior relative to mindfulness training.

In order to assess neurological changes, various neuroimaging techniques will be

implemented. Because an MRI (magnetic resonance imaging) is used to reveal brain anatomy

(Nguyen, 2015), this will be used to determine structural changes. In order to asses functional

changes, two neuroimaging techniques will be used: an fMRI (functional magnetic resonance

imaging), which displays which parts of the brain are most active based on oxygen use, and a

PET (positron emission tomography), which uses radioactive molecules known as tracers to

track which parts of the brain metabolize these tracers (Nguyen, 2015). The resulting images

should provide a comprehensive view of the different structural and functional brain changes

resulting from MBSR practice.

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Design/Procedure

This research will be carried out using a randomized controlled trial in which the

independent variable is an MBSR program while the dependent variables include cognitive and

behavioral components of mindfulness as well as structural and functional neurological changes.

The study will begin by collecting demographic data, through a questionnaire disseminated by

email, from all participants who will be randomly numbered in order to preserve anonymity. This

data will be recorded in a secure file and used to randomly assign participants into either the

MBSR group (Group A) or the control group (Group B). At that point, participants will be

contacted to schedule initial evaluations where the following data will be assessed recorded:

results of the Baer, Smith, Hopkins, Krietemeyer, and Toney self-report questionnaire (as cited

in Heydenfeldt et al., 2011), results of the questionnaire on mindfulness qualities (Snyder, 2002),

and the results of an MRI, an fMRI, and a PET scan. Participants will then be scheduled either

for dates and times to attend the MBSR program, or for dates and times to return for further

testing.

Participants in Group A will then undergo an MBSR program adapted from the

traditional Kabat-Zinn model (1982). This will be an eight-week program comprised of seven

2½-hour classes and a six-hour class during week seven. Unlike the original model, the first half-

hour of each two-hour session will focus on psychoeducation on the topic of Mindfulness Based

Stress Reduction (Kabat-Zinn, 2004). The remaining two hours will be divided equally between

sitting meditation/breath work, progressive awareness, active meditation, and a period for

discussion. The six-hour class will be comprised of an hour of sitting meditation/breath work, an

hour of gentle yoga, an hour-long mindfulness labyrinth walk, a half hour of progressive muscle

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relaxation, a half hour of guided imagery, an hour for discussion, and an hour-long break for a

silent lunch.

The measures listed above will be recorded for members of Group A at baseline, at the

end of the eight-week program, at six months post-intervention, and at one year post-

intervention. For members of Group B, these measures will be recorded at the same intervals as

Group A less the measurement taken for those individuals at the close of the intervention. The

following table (Table 1) outlines a suggested timeline for the study at a total of 68 weeks:

Table 1 Research Timeline

Research Phase Week Number

(Cumulative Week Number) Activities Pre-Intervention Week 1 (Week 1) Deploy recruitment campaign

Weeks 2-5 (Week 5) Screen respondents to determine eligibility Week 6 (Week 6) Assess participant demographics Week 7 (Week 7) Input demographics and randomly assign to group Week 8 (Week 8) Collect all measures for baseline

Intervention Weeks 1-6 (Week 14) Group A – 2½-hour MBSR class Group B – N/A

Week 7 (Week 15) Group A – 6-hour MBSR class Group B – N/A

Week 8 (Week 16) Group A – 2½-hour MBSR class Group B – N/A

Post-Intervention Week 24 (Week 40) Collect all measures Week 52 (Week 68) Collect all measures

Analysis

As results are measured, data will be recorded and the qualitative data from the

mindfulness quality questionnaire will be coded to allow for quantitative analysis. While both

measures utilize a five-point Likert scale, the Baer et al. self-report questionnaire lists possible

responses as on a scale of 1-5 while the mindfulness quality questionnaire lists possible

responses as (Strongly Disagree, Disagree, Unsure, Agree, or Strongly Agree). As such, data

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from the mindfulness quality questionnaire will be coded so that Strongly Disagree = 1, Disagree

= 2, Unsure = 0, Agree = 3, Strongly Agree = 4. Using this method, possible correlations

between changes in mindfulness related cognitions and behaviors would be explored. These

results will also be used to ensure that the MBSR intervention was successful overall.

Additionally, neurologists will analyze the resulting MRIs, fMRIs, and PET scans in

order to determine if structural and functional changes have taken place. If statistically

significant changes have taken place, it will be necessary to code these changes according to

their strength in order to explore possible correlations between these neurological changes and

the possible cognitive and behavioral changes described above. For example, it would be

possible to compute a correlation between an observed neurological change and either a reported

change in mindfulness based on the questionnaires, or more specifically, a reported change in a

specific area such as empathy on the mindfulness qualities survey. The would show possible

evidence for relationships between certain areas of the brain and certain aspects of mindfulness

that may not have been previously evident.

All data will be used to compare differences among members of Group A and Group B in

order to ensure that the MBSR intervention was the most likely cause of any resulting changes.

By taking measures for both groups at baseline, six months post-intervention, and one year post-

intervention, it is possible to account for any other time related changes such as aging and the

increase in knowledge that occurs through daily life.

Finally, neurologists and neuropsychologists will review the structural and functional

changes in the brain in order to determine the resulting behavioral and cognitive changes that are

commonly seen as a result of these changes. If consistent changes are found, this will provide

empirical evidence behind the efficacy of mindfulness from a neuropsychological perspective.

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Discussion

Limitations

While this study has the potential to provide a great deal of information on the complex

relationships between mindfulness, cognition, behavior, and neurological structure and

functioning, it is also quite intricate and therefore poses several limitations. Firstly, when using

human participants there are always certain limitations that arise including lack of responses to

recruitment efforts, lack of respondents who meet necessary criteria, and a sample that might not

be entirely representative despite efforts to the contrary.

Additionally, because this study will be carried out over the course of more than a year,

the likelihood that participants will drop out over time is higher than for a brief study. Moreover,

because subjective measures are being used, there is always possibility for error due to

participants responses not aligning with their actual behavior and cognitions for a variety of

reasons including a fear of giving truthful responses, an impulse to answer questions in a way the

participant feels they are compelled to, and poor personal awareness.

Moreover, because there will be several different neurological imaging techniques used

to assess brain changes, the way professionals interpret these results may not be consistent with

one another. Also, there is always a possibility that false correlations may come up between

factors that are not actually related.

A final drawback to this study is the resources that would be required to see it through. In

order to carry out such a complex study a great deal of time and money would be required. As

such it would be necessary to apply for grants and various other forms of funding. In addition, it

may be beneficial to partner with a teaching or research hospital in order to share knowledge and

resources.

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Of course, this study design does have advantageous factors as well. By using a well-

respected MBSR program model, the likelihood of achieving valid results is greatly increased.

Additionally, by using randomized assignment it is much more likely that intra-group differences

will be minimized. Finally, by taking measures at various points throughout the study, the effects

of time on outcomes are minimized.

Ethical Considerations

At present, the only clear ethical issue with this study design is the lack of intervention

for those participants in the control group (Group B). While these participants are not in any

direct harm as a result of not receiving an intervention, the principle of benevolence dictates that

some form of MBSR training be offered to these participants as a result of it’s obvious benefits.

As such, it is suggested that after the final measures have been collected, members of Group B

are offered access to materials on mindfulness or an opportunity to participate in an MBSR

program if possible. Additionally, it may be beneficial to further incentivize participation for

those members assigned to the control group by offering additional compensation of a reasonable

nature.

By adhering to these guidelines, it is likely that the suggested study would provide a great

deal empirical evidence for the common structural and functional neurological changes seen as a

result of Mindfulness Based Stress Reduction and the resulting cognitive and behavioral changes

that can be expected while providing participants with a safe and worthwhile experience.

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