Volume 6, Issue 2 (Spring 2018- 2018)                   PCP 2018, 6(2): 63-72 | Back to browse issues page

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Rezaei F, Hosseini Ramaghani N A. Experiential Avoidance and Cognitive Emotion Regulation Strategies as the Mediators in the Relationship Between Mindfulness and Social Anxiety Disorder Symptoms. PCP. 2018; 6 (2) :63-72
URL: http://jpcp.uswr.ac.ir/article-1-499-en.html
1- Department of Psychology, Faculty of Literature and Humanities, Lorestan University, Khorramabad, Iran.
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1. Introduction
Social Anxiety Disorder (SAD) is characterized by a marked and persistent fear of negative evaluation in social situations (American Psychiatric Association, 2013). It is a chronic psychiatric disorder associated with poor educational and occupational achievement, interpersonal impairment, and considerable psychiatric and medical comorbidity (Grant et al., 2005). This chronic disorder is the fourth most common psychiatric disorder with a lifetime prevalence of 10–15% and a 1-year prevalence of 5–10% (Ohayon & Schatzberg, 2010). SAD is often treated using Cognitive Behavior Therapy (CBT). Although CBT has been broadly indicated as efficacious for treating social anxiety, many people with social anxiety do not sufficiently benefit from this treatment or achieve only minimal improvement (Hofmann & Bögels, 2006; Taylor, Abramowitz & McKay, 2012).  Thus, clinicians and researchers have started focusing on other methods of treatment, including mindfulness and acceptance-based interventions.
Mindfulness can be described as the awareness that comes from paying attention to events of the present moment life in an intentional and non-judgmental way (Kabat-Zinn, 1994; Orzech, Shapiro, Brown & McKay, 2009). A growing number of studies have provided evidence for the effectiveness of mindfulness-based interventions, specifically in the context of social anxiety (Bögels, Sijbers & Voncken 2006; Kocovski, Fleming, Hawley, Ho & Antony, 2015; Kocovski, Fleming, Hawley, Huta & Antony, 2013; Kocovski, Fleming & Rector, 2009; Shikatani, Antony, Kuo & Cassin, 2014). Although these findings in support of mindfulness-based treatments for social anxiety are hopeful, further investigations of such interventions are necessary to build support for their use and also to address the mechanism of these treatments. Careful investigation of the hypothesized mechanisms of mindfulness and how these might result in beneficial changes could notify the development and refinement of future treatments.
Emotion regulation is one pathway through which mindfulness demotes psychological distress (anxiety, depression, and stress). Garland, Gaylord and Park (2009) have offered the mindful coping model on the mechanisms of mindfulness on health-related outcomes. According to this model, the positive effect of mindfulness might occur through the process of reappraisal, which acts as an adaptive strategy. Reappraisal involves redefining an emotion-eliciting experience or stimulus (usually negative) in a mode that modifies the effect of that experience (Garland, Gaylord & Fredrickson, 2011). Emerging evidence reveals that individuals with SAD are less able to apply reappraisal and have lower self-efficacy regarding the use of reappraisal and may engage in more unproductive efforts at reappraisal (Brozovich et al., 2015; Werner, Goldin, Ball, Heimberg & Gross, 2011; Goldin et al., 2012). Mindfulness practice is associated with increases in positive reappraisal; by mediating reductions in stress through mindfulness practice, individuals may create a broadened state of awareness that facilitates empowering interpretations of stressful life events, leading to strikingly reduced distress (Garland et al., 2011).
Other cognitive emotion regulation strategies that might underlie the processes through which mindfulness decreases symptoms are rumination and reduced catastrophizing (Garland et al., 2011; Desrosiers, Vine, Klemanski & Nolen‐Hoeksema, 2013). Rumination is described by repetitive thoughts about a negative emotional experience, including causal factors and probable consequences of the experience (Nolen-Hoeksema, 1991), and catastrophizing is characterized by the tendency to interpret the events’ special ambiguous conditions in a very negative way (Stopa & Clark, 2000). Individuals with SAD engage in a post-event process that attends to rumination and focus on negative information about themselves and others’ opinions of them during the social situation and compare this to an ideal standard (Brozovich et al., 2015; Brozovich & Heimberg, 2011). Also, individuals with SAD have a tendency to interpret negative social events in a catastrophic fashion (e.g. Vassilopoulos & Banerjee, 2008; Kingsbury & Coplan, 2016). Higher levels of rumination and catastrophizing have been frequently associated with lower levels of trait mindfulness (Petrocchi & Ottaviani, 2015; Garland et al. 2011; Trompetter, Bohlmeijer, Fox & Schreurs, 2015). Emphasis on the present moment and the nonjudgmental aspect of mindfulness may diminish the abstract self-evaluative thoughts, thereby reducing depression and anxiety (Nolen-Hoeksema, Wisco & Lyubomirsky, 2008).
Another hypothesized mechanism of mindfulness that demotes psychological distress (anxiety, depression, and stress) is reductions in experiential avoidance (Eustis, Hayes-Skelton, Roemer, & Orsillo, 2016; Shapiro, Carlson, Astin,  & Freedman, 2006). Previous studies show that adults with SAD, in comparison with a healthy group, reported more experiential avoidance even after controlling for the presence of other comorbid anxiety disorders and depression (Kashdan et al., 2013; Epkins, 2016). Experiential avoidance can be described as a process that occurs when people are unwilling to stay in contact with unpleasant inner experience (Cunha, Galhardo & Pinto-Gouveia, 2016). The mindfulness practice increases the capacity for objectivity in the relationship to one’s internal/external experience and facilitates the acceptance of internal experiences (Shapiro et al., 2006).
Despite initial support for the mediated role of experiential avoidance and cognitive emotion regulation strategies in the relationship between mindfulness and psychological problems, existing studies that have tested these hypotheses have less focused on SAD. However, most studies have used general self-report measures of experiential avoidance (Acceptance and Action Questionnaire), but several complaint-specific measures have been adapted from this scale. Context-specific indices of experiential avoidance have arisen from the belief that general measures of experiential avoidance may possess less utility than those that pertain to certain circumstances. Theoretically, individuals may find it difficult to report avoiding decontextualized thoughts and feelings, as listed in these general measures, and may find it easier to respond by avoiding specific internal events that are associated with particular settings (Sandoz, Wilson, Merwin & Kellum, 2013; MacKenzie & Kocovski, 2010). Therefore, in this study, context-specific indices of experiential avoidance have been used (Social Anxiety – Acceptance and Action Questionnaire, MacKenzie & Kocovski, 2010) that are more sensitive and more precise than the existing Acceptance and Action Questionnaire (Kocovski et al., 2015). Also, according to the data of the researchers of the present study, most former studies of mindfulness and emotion regulation have used non-clinical samples (Desrosiers et al., 2013). In the current study, we synthesize our predictions in the moderated mechanisms of mindfulness for clinical sample of social anxiety according to the previous studies in literature (e.g. Desrosiers et al., 2013; Desrosiers, Vine, Curtiss, Klemanski, 2014; Brown, Bravo, Roos & Pearson, 2015; Shapiro et al., 2006; Eustis et al., 2016) and the model suggested by Garland et al. (2011)), depicted conceptually in Figure 1. In the current study, this conceptual model is designed to examine whether experimental avoidance and maladaptive cognitive emotion regulation strategies (rumination and catastrophizing) and adaptive cognitive emotion regulation strategies (reappraisal) mediate associations between mindfulness and social anxiety symptoms. 
2. Methods 
A cross-sectional study was used to investigate the direct and indirect associations between facets of mindfulness, rumination, catastrophizing, reappraisal and experiential avoidance in SAD patients. The protocol of the study was approved by the “Regional Ethics Committee” at (the institute where the research was conducted).
Statistical population of this study contained all the students with SAD in Lorestan University in the academic year 2016-2017. The sample consisted of 104 students with SAD, which is in line with the recommendations by Kline (2011), who suggested a sample size of 100 to 200 participants when analyzing data using structural equation modeling.
Using purposive sampling method, a sample of 114 socially anxious students were selected based on the following conditions: obtained a score higher than the cutoff point (i.e. 29 points) in the Social Phobia Inventory (SPIN) (Dogaheh, 2013); and received diagnoses of SAD according to the Diagnostic and Statistical Manual for Mental Disorders, fifth edition (DSM-V; APA, 2013) criteria in a clinical diagnostic interview by a doctorate in Clinical Psychology. Of the initial sample of 114 patients, 10 (8.77%) were excluded because of incomplete data. The final sample consisted of 104 patients, including 74 females (71.2%) with an age range of 18 to 47 years (M=33.91, SD=7.90) and 30 males (28.8%) with an age range of 19 to 51 years (M=35.8, SD=8.32). There was no significant difference between genders in age. 
Inclusion criteria to participate in the current study included: a) receiving diagnosis of SAD by clinicians and b) willingness to participate in the study. Patients were excluded from the study if they: a) had a co-morbid psychiatric disorder except for mild depression (Getting a score below 18 in BDI-II) in a clinical diagnostic interview according to DSM-5, b) were using drugs, c) were participating in psychotherapy, and d) were not willing to participate in study. 
Those patients who satisfied the inclusion criteria were then explained the aim and the process of the study, including the ethical considerations such as confidentiality and ability to withdraw without consequence. The patients were then given a questionnaire package and instructions on how to return the completed questionnaires. Data were analyzed using AMOS (Version 22).
The questionnaire package given to the patients consisted of six questionnaires, as outlined below: The Social Phobia Inventory (SPIN), Beck depression inventory II (BDI-II), Cognitive Emotion Regulation Questionnaire (CERQ), Social - Anxiety Acceptance and Action Questionnaire (SA-AAQ), and Five Facet Mindfulness Questionnaire (FFMQ). 
Social Phobia Inventory (SPIN) was developed by Connor et al. (2000) to assess social anxiety. It is a 17-item self-report measure of avoidance and fear of a range of social situations and physiological symptoms of anxiety. The SPIN has been validated for use in clinical populations, has discriminant validity and strong convergent, and good internal consistency and test-retest reliability (Radomsky et al., 2006). The psychometric properties of this questionnaire in Iran have also been examined. The reliability of the retest of this test was 0.82, and its internal consistency was reported by Cronbach’s alpha 0.86 (Zanjani, 2010). 
Beck depression inventory II (BDI-II) (Beck, Steer, & Brown, 1996) is a multiple-choice self-report instrument designed to measure both the presence and severity of depressive symptoms. BDI-II contains 21 items, and its answers are scored from 0 to 3. Higher total scores suggest more severe depressive symptoms. The standardized cutoffs are (different from the original version) as follows: 0–13; minimal depression, 14–19; mild depression, 20–28; moderate depression; and 29–63, severe depression (Beck et al., 1996). The BDI-II has been shown to have excellent internal consistency (α=0.90) and good psychometric properties (Storch, Roberti, & Roth, 2004). The psychometric properties of this questionnaire in Iran have also been examined. Fata, Birashk, Atefvahid and Dabson (2005) reported internal consistency to be 0.91., test-retest coefficient to be 0.81 within one week, and correlation coefficient with Beck Anxiety Inventory to be 0.61.
Cognitive Emotion Regulation Questionnaire (CERQ) (Garnefski, Kraaij & Spinhoven, 2001) consists of 36 Likert-scaled items and 9 subscales that assess how often certain cogni-tive strategies are used to cope with stressful life events. In this study, reappraisal, rumination and catastrophizing subscales were used. Cronbach’s alpha coefficients for these sub-scales are 0.85, 0.81 and 0.70, respectively. The CERQ has been shown to have good internal consistency and convergent validity with subscales of the SCL-90 (Garnefski, Kraaij & Spinhoven, 2001). The psychometric properties of this questionnaire in Iran have also been examined. Good divergent and convergent validity and internal consistency 0.78- 0.93 has been report-ed (Besharat & Bazzazian, 2014). 
The Social - Anxiety Acceptance and Action Questionnaire (SA-AAQ) developed by MacKenzie & Kocovski, (2010) was used to assess acceptance or experiential avoidance specific to social anxiety. It was based on the AAQ (Hayes et al., 2004), but so many adapted items reveal a social anxiety context. There was support for a one-dimensional factor structure in two nonclinical samples (MacKenzie & Kocovski, 2010). Higher scores on the scale represent less experiential avoidance and more acceptance. The SA-AAQ has excellent internal consistency (0.94 in MacKenzie & Kocovski, 2010). In the present study, psychometric properties of this questionnaire in Iran have been examined. The reliability of 0.89 was obtained using the internal consistency, indicating good convergent validity for this questionnaire.
Five Facet Mindfulness Questionnaire (FFMQ) was developed by Baer, Smith, Hopkins, Krietemeyer, and Toney (2006) and is a 39-item questionnaire assessing mindfulness in daily life. Researchers mixed items from five existing mindfulness questionnaires into a single data set and performed an exploratory factor analysis. Based on this analysis, researchers found five component skills that contribute to mindfulness: observing (8 items), non-reactivity to inner experiences (7 items), not judging of inner experiences (8 items), acting with awareness (8 items), and describing (8 items) (Baer et al., 2006). Items were rated on a 5-point Likert-type scale. The five-facet scale demonstrated adequate-to-good internal consistency in non-meditators, with α coefficients ranging from 0.75 to 0.91 (Baer et. al 2006). The five factor model is a good fit with experienced meditators (Baer et al., 2008). The psychometric features of the Persian version of this questionnaire have been studied by Dehghani, Esmaeilian, Akbari, Hassanvand (2014) in Iran, whose results indicate favorable internal consistency (0.81-0.93). The convergence and differential validity is appropriate for this scale.
We computed the Pearson correlations between the predictors and outcome variables in SPSS 20.0. Due to the latent variables (e.g. mindfulness and cognitive emotion regulation strategies), the authors tested mediational hypotheses by employing nested Structural Equation Models (SEM) in AMOS 22.0. SEM permits the inclusion of correlated variables and can be used when variables predict other variables (Byrne, 2001). Goodness of fit was assessed by the CMIN/DF (values of 3.0 or less show that the model adequately fits the data), X2 (non-significant values P>0.05 indicate that the model adequately fits the data), Goodness of Fit Index (GFI) (values of 0.95 or greater indicate that the model adequately fits the data), Comparative Fit Index (CFI) (values ≥0.95 signify the model fitness), Bentler–Bonett Normed Fit Index (NFI) (values ≥0.95 denote the model fitness to the data), Tucker-Lewis Index (TLI) (values ≥0.95 indicate that the model sufficiently fits the data), and the Root Mean Squared Error of Approximation (RMSEA) (values ≤0.08 suggest that the model adequately fits the data) (Kline, 2011; Browne & Cudeck, 1993).
An initial model is indicated in Figure 1 SEM required the selection of beginning and endpoints in the cyclical model, and the symptoms of SAD were designed as the endpoint for the model. As shown in Figure 1, the latent construct mindfulness was specified by five facets: observing, non-reactivity to inner experiences, non-judging of inner experiences, acting with awareness and describing. The latent construct Cognitive Emotion Regulation strategies were specified by three strategies: reappraisal, rumination and catastrophizing. Amos software path analysis was conducted to test the model which showed the direct and indirect effects of mindfulness on symptoms of SAD with the mediation of experiential avoidance and Cognitive Emotion Regulation strategies. 
It is noteworthy that before testing the model, a confirmatory factor analysis was performed for the latent variables. The results of analyses for mindfulness facets indicated that the path of observing facet was not significant; thus, in the model analysis, this path was removed. 
3. Results
The means, standard deviations and zero-order correlations among the key variables are displayed in Table 1. As can be seen, describe, acte-aware, non-judge, non-react, experimental avoidance, reappraisal, rumination, catastrophizing and SAD were correlated. Independent samples t-tests revealed no significant differences in mean scores between males and females.

Supposed models examination 
In order to test the validity of the hypothesized model (Figure 1), AMOS (version 22) was used. All factor loadings that are presented in Figure 2 were significant (P<0.01). The index demonstrated good fit (X2 24=36.13, P=0.053, GFI=0.92, AGFI=0.86, CFI=0.97, NFI=0.92, TLI=0.96, RMSEA=0.07, CMIN/df=1.50.)

Figure 2 explains that all paths are significant. The standardized regression coefficients for the relevant paths are indicated in Figure 2. According to this figure, directed effects of all paths through bootstrapping for model are significant. Also, indirect effects of all paths, i.e., (mindfulness→ experiential avoidance → symptom of SAD) and (mindfulness→ emotion regulation → symptom of SAD) are significant (P<0.001).

4. Discussion
This study investigated the associated mechanisms between mindfulness and mental health and suggests that the experimental avoidance and certain emotion regulation strategies significantly mediate the relationship between mindfulness and symptoms of social anxiety in adults.
As hypothesized, rumination and catastrophizing (maladaptive cognitive emotion regulation strategies) significantly mediated associations between mindfulness and symptoms of social anxiety. This finding is in line with previous studies in literature (e.g. Desrosiers et al., 2013; Desrosiers et al., 2014; Brown et al., 2015). Theorists have argued that individuals with SAD engage in a post-event process that attends to rumination and focus on negative information about themselves and others’ opinions of them during the social situation and compare this to an idealistically standard (Brozovich et al., 2015; Brozovich & Heimberg, 2011). Also, individuals with SAD have a tendency to interpret mildly negative social events in a catastrophic, fashion way (e.g. Vassilopoulos & Banerjee, 2008; Kingsbury & Coplan, 2016). Emphasis on the present moment and the nonjudgmental aspect of mindfulness may diminish the abstract self-evaluative thoughts characteristic of rumination and catastrophizing, thereby, reducing symptoms of social anxiety (Nolen-Hoeksema et al., 2008). The nonjudgmental facet is particularly incompatible with self-critical questioning and may help ruminators disconnect from it, thus decreasing the effects of rumination and maintenance of social anxiety symptoms. 
Our hypothesis for reappraisal was supported in that it significantly mediated the associations between mindfulness and symptoms of social anxiety. This finding is consistent with the neuroimaging studies showing positive correlations between dispositional mindfulness and areas of the brain activated through reappraisal (Modinos, Ormel & Aleman, 2010) and is consistent with the mindful coping model (Garland et al., 2011) that suggests an increase in dispositional mindfulness and a reduction in stress partly through promoting positive reappraisal. Individuals may develop a broader state of awareness that promotes interpretations of stressful life events, leading to noticeably lower distress (Garland et al. 2011). Also, taking a nonjudgmental style toward experience is in itself a form of redefining that may assist a more general tendency toward the reappraisal of preliminary negative cognitions. This nonjudgmental reappraisal, non-evaluative, or redefining may then lead to improvements in anxiety symptoms (Carmody, 2009; Chambers, Gullone, & Allen, 2009). 
The result of this study for the mediating role of experiential avoidance indicated that it significantly mediated associations between mindfulness and symptoms of social anxiety. This finding is in line with studies that show that anxiety disorders are both characterized and maintained by experiential avoidance (Panayiotou, Karekla & Panayiotou, 2104; Epkins, 2016) and is consistent with study results that mindful awareness may result in lower experiential avoidance (Weinrib, 2011). Thus, increased mindfulness is related with decreased experiential avoidance, which, in turn, is associated with lower social anxiety symptoms. 
Some limitations of the present study need to be highlighted. First, the findings are cross-sectional and correlational, and no causal or temporal relations can be demonstrated. Additionally, sample characteristics are also a limitation, as the focus was on a community sample of treatment-seeking; thus, the generalizability of our results may be limited. Finally, as our study overlooked the mechanisms of action following mindfulness-training, the implications for mindfulness-based interventions are limited. Future studies should examine if self-reported mindfulness following mindfulness-training acts through similar mechanisms, and compare the results on the sample of treatment-seeking and nonclinical samples. Also, it is suggested that future research be conducted on the trans-diagnostic role of the mechanisms of action underlying mindfulness in mood and anxiety disorders.
The current results add to our understanding of the process underlying the relationship between the mindfulness and social anxiety symptoms by revealing that experimental avoidance, maladaptive cognitive emotion regulation strategies (rumination and catastrophizing), and adaptive cognitive emotion regulation strategies (reappraisal) mediate associations between mindfulness and social anxiety symptoms. So it may need to become part of how anxiety disorders (particularly SAD) are conceptualized and treated and protocols for SAD specifically target the experimental avoidance, rumination, catastrophizing and reappraisal. 
This research had no financial supporters. 
Conflict of Interest
The authors declared no conflicts of interest.

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Type of Study: Research | Subject: Psychiatry
Received: 2017/08/8 | Accepted: 2017/12/25 | Published: 2018/04/1

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