The aim of this study was to explore the differences and similarities between mindfulness and metacognitions, and to investigate how these constructs relate to symptoms of psychiatric disorders. The Five Facet Mindfulness Questionnaire (FFMQ), the Metacognitions Questionnaire 30 (MCQ-30), the Patient Health Questionnaire 9 (PHQ-9), the Generalized Anxiety Disorder Assessment 7 (GAD-7), and the Obsessive-Compulsive Inventory Revised (OCI-R) were administered electronically by the use of social media and online forums, and 224 people completed all five questionnaires. The FFMQ factors of non-judge and awareness were significantly correlated with all of the MCQ factors, while observe, non-react and describe showed weak and varying correlations. Through forward regression analyses the MCQ factors measuring negative metacognitions, uncontrollability and danger and need to control thoughts, was found to be important predictors of symptoms of psychiatric disorders. Awareness and nonreact were found to be the FFMQ factors most important in predicting symptoms of psychiatric disorders. The findings supported both the metacognitive model, and parts of the mindfulness model.

Metacognitions play a crucial role in the development and maintenance of psychiatric disorders, such as depression and anxiety. Its function in anorexia nervosa (AN), however, has been neglected. Examining the role of metacognitions in AN may prove useful for developing the AN conceptualization currently lacking. Additionally, it may provide a desperately needed new route for AN treatment, as no efficacious treatment for adult AN is available to date. This study aimed to build on preliminary findings suggesting that individuals with AN are characterized by the cognitive attentional syndrome (CAS), the vital component in the Self-regulatory Executive Function (S-REF) model underlying metacognitive processes. Hence, quantitative and qualitative measures of individuals with AN, dieting, and non-dieting adult women were examined to ascertain whether these groups embodied differences in their metacognitive frequency and nature. ANOVA, bivariate correlation, and ANCOVA were used for data analysis. Findings showed that the AN sample experienced higher overall metacognitions; particularly negative metacognitions and metacognitions around control. When anxiety and depression were controlled for, however, the association became non-significant. Nonetheless, anxious and depressive symptoms are greatly intertwined with eating symptoms and increased metacognitions in the AN sample are still highly plausible. Metacognitive themes endorsed by the AN sample were around sociability and control. Thought control strategies were found to be the same in all groups; however, the AN sample endorsed a higher utilization of punishment and a lower utilization of distraction. Several limitations including small AN sample size and no psychiatric control group should be taken into account. Overall, however, findings suggested that, because the AN sample was characteristic of the CAS and the S-REF model, dysfunctional metacognitions may be worth targeting in AN treatment.

The present study firstly aimed to examine specific metacognitions as unique predictors of various psychological symptoms including anxiety, depression, worry and social anxiety. The second aim of the study was to investigate the moderator role of coping styles in the relationship between metacognitions and these psychological symptoms. Based on these aims, the study was conducted with 435 participants between the ages 18-35 and the following scales were administered in addition to demographic forms / Trait Anxiety Inventory, Beck Depression Inventory, Penn State Worry Questionnaire, Libowitz Social Anxiety Scale, Metacognitions Questionnaire-30 and The Ways of Coping Inventory. According to the results, Negative Beliefs Concerning Uncontrollability of Thoughts and Danger (MCQ-2) was found to be as significant predictor of all examined psychological symptoms. Positive Beliefs about Worry (MCQ-1) was also revealed as significant predictor of anxiety, worry and social anxiety and avoidance. Furthermore, the results revealed negative associations between Cognitive Self-Consciousness (MCQ-5) and anxiety, worry and social anxiety. Finally, Beliefs about Need to Control Thoughts (MCQ-4) was found to be related with increase in depression and decrease in worry. In addition, regression analyses revealed negative relationship between Problem-Focused Coping and anxiety, depression and worry / and positive relationship between Emotion-Focused Coping and anxiety, social anxiety and avoidance. The moderation models of coping styles was also supported in which coping ways moderate the relationship between metacognitions and psychological symptoms including depression, absence of worry, social anxiety and avoidance. Findings were discussed based on relevant literature / and clinical implications of the study and future directions were also provided.

Metacognitive therapy (MCT) has been shown to be a promising treatment approach for obsessive-compulsive disorder (OCD). The changeability of metacognitions by (metacognitive) treatment and its relevance to treatment outcome is, however, still unclear. The current study investigates, (1) if treatment with MCT or exposure and response prevention (ERP) in a randomized-controlled pilot trial (n = 24 patients with OCD) changes OCD-specific metacognitions of thought fusion beliefs, beliefs about rituals and stop signals, and (2) if these changes are relevant for the treatment outcome in terms of patient- and therapist-rated OCD symptoms. ANOVA with pretest, posttest and follow-up scores could show that all three metacognitions significantly decreased during both treatments. Regarding thought fusion beliefs, a significant interaction effect indicated a higher decrease after MCT than ERP treatment. In hierarchical regression analyses, changes in stop signals from pre- to post-treatment significantly predicted patient-rating OCD symptoms at post-treatment and follow-up at 3 months after treatment. These changes were even predictive of post-treatment outcome after controlling for general metacognitions and dysfunctional cognitive beliefs. These findings support the assumption thatmetacognitions can change during both treatments and that changes in stop signals might be relevant for the treatment outcome on the symptom level in OCD.