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The ability to regulate emotions is essential for human well-being. Among posttraumatic stress disorder (PTSD) patients, the capability to control emotions is impaired. Trauma-focused cognitive behavioral therapy is a recommended treatment for patients diagnosed with PTSD. Usually, cognitive reappraisal is considered the primary regulation technique in cognitive behavioral therapy treatment. The strategy aims to decrease negative or increase positive emotions by changing the interpretation of an event to alter the meaning of the situation. The aim of this thesis was to conduct a systematic review of the neural correlates of cognitive reappraisal among post-traumatic stress disorder patients. Through a systematic search, screening, and selection process out of initial 545 articles, six studies were included for data extraction and discussion. Using functional magnetic resonance imaging, participants utilized the strategy of cognitive reappraisal during an emotion regulation task in the scanner. Using functional magnetic resonance imaging, the neural activity of the participants in the included studies was compared during a cognitive reappraisal task. The result revealed a tendency of decreased activity in prefrontal cortices in PTSD patients during reappraisal compared to controls, indicating deficient recruitment of prefrontal cortices in PTSD patients during reappraisal.

Objectives: To investigate the preventive potential of the Developmental Origins of Health and Disease (DOHaD) hypothesis as it pertains to emotion dysregulation and psychopathology by: i) elucidating the impact of modifiable perinatal risk factors, and ii) examining whether a postnatal intervention can improve infant emotion regulation. Methods: Studies 1 and 2 used data from the Canadian Healthy Infant Longitudinal Development (CHILD) cohort and the Maternal-Infant Research on Environmental Chemicals (MIREC) cohort to examine if modifiable perinatal risk factors (including prenatal diet quality) confounded the link between prenatal metabolic complications and offspring psychopathology. Study 3 used MIREC data to examine if prenatal diet quality was linked to a biomarker of emotion regulation in infants (autonomic nervous system (ANS) function). Studies 4 and 5 used data from 40 infants of mothers diagnosed with postpartum depression (PPD) and 40 healthy control infants matched on infant age sex and socioeconomic status. These studies examined if infant emotion regulation (Study 4) and mother-infant physiological synchrony (a marker of dyadic emotion regulation-Study 5) improved following maternal cognitive behavioral therapy (CBT) for PPD. Results: In Studies 1 and 2, prenatal diet quality accounted for significant variance in the links between prenatal metabolic complications and offspring psychopathology. In Study 3, poor prenatal diet quality was associated with adverse ANS development in offspring. In Studies 4 and 5, infants exhibited more adaptive emotion regulation and mother-infant synchrony improved following maternal receipt of CBT for PPD. v Conclusions: Elucidating the impact of modifiable perinatal risk factors on offspring psychopathology provides meaningful targets for intervention, and postnatal interventions may improve offspring emotion regulation and could reduce the risk of psychopathology. This work highlights the importance of the perinatal period as a time during which modifiable risk factors can be identified and intervened upon to reduce mental disorder risk across the lifespan. / Dissertation / Doctor of Philosophy (PhD) / Healthy brain development is important for health and success in life. However, risk factors such as the mother’s poor physical and mental health during pregnancy and in the first postnatal year can increase the risk of emotion and behaviour problems in offspring. Therefore, the objectives of this thesis were to i) identify links between modifiable pre and postnatal risk factors and poorer offspring brain development and ii) determine if intervening on one of these risk factors might improve offspring brain development. Results from this thesis show that an unhealthy maternal diet in pregnancy was linked to more offspring emotion, behaviour, and brain development problems and that treating postpartum depression in mothers may improve offspring brain development. This work suggests that identifying and intervening on modifiable risk factors is important to improve early brain development and may prevent the development of mental disorders later in life.

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Adolescence and emerging adulthood are both critical transition phases wrought with developmental changes and challenges. One of the major developmental tasks that families of children, adolescents and emerging adults deal with is facilitating the development of emotion regulation. The practices that families engage in that attempt to create order and stability within the family—their routines and rituals—may be one key family variable that helps develop better emotion regulation. Family routines and rituals tend to create a more stable environment, which in turn may predict better outcomes for individuals (Crespo, Davide, Costa & Fletcher, 2008; Fiese, 2007; Leon & Jacobvitz, 2003). The current study examined the extent to which routines and rituals in the family of origin during adolescence contributed to longer term, post-adolescent positive psychological outcomes in emerging adults. The current study used a sample of 492 college students between the ages 18-24 years old. The college students completed a series of online questionnaires about their family routines and rituals during adolescence, their current psychological well being and emotion regulatory skills. A subset of college student had their parents participate in the study who completed similar online questionnaires about their past family routines and rituals. When emerging adults ascribed greater meaning to past family routines and rituals, this was directly related to greater psychological well being. Emerging adults and parents ascribed a different level of meaning to the family routines and rituals, which predicted greater psychological well being of emerging adults. The results of the study showed that emotion regulation was a significant mediator of the relationship between family routines and relationships and emerging adults’ psychological well being. The findings of the current study support the notion that mechanisms such as family routines and rituals that families implement are related to better outcomes for individuals. When families engage in meaningful family practices during adolescence, the impact of these practices can carry over into emerging adulthood.

The studies originated from research on group-based emotions and examine emotions and emotion regulation in the context of group-based provocations. In addition, the studies examined the ways in which people identify with their group and how that affects responses to group provocations. I hypothesized that the process of ruminating in contrast to reappraising would increase anger and negative action intentions and attitudes towards the provoking outgroup. I hypothesized that individual differences in ingroup glorification and trait emotion regulation would moderate the relationship between a group provocation and affective and attitudinal responses such that high glorification and high rumination would lead to more anger and more negative attitudes and behavioral intentions. The participants were University of Massachusetts-Amherst undergraduates in the psychology participant pool who identified as United States citizens. Study 1 was an experimental three-level design (rumination, reappraisal control). Study 2 was an experimental three-level design (provocation, no provocation, control). Study 1 demonstrated that response to provocation was affected by the emotion regulation manipulation and level of ingroup identification. Study 2 revealed that individual differences in chronic emotion regulation style and identification interacted to predict responses to the provocation. Implications of the research are discussed.

Individuals with borderline personality disorder (BPD) experience emotional instability and have a high suicide rate. Treatment for BPD includes psychotherapy and adaptive emotion regulation strategies, which include cognitive reappraisal. Previous systematic reviews indicate that abnormal brain patterns may cause emotional instability in BPD individuals. To further explore this, this review collected articles that examined neural activity using fMRI during cognitive reappraisal in subjects with BPD and healthy controls. We identified four relevant articles through a search of Web of Science and PubMed. The articles included conflicting results in both participant groups regarding increased or decreased activity during cognitive reappraisal applying either reinterpretation or distancing. The affected brain regions were the following: lateral and ventrolateral prefrontal cortex, left middle temporal gyrus, and superior temporal gyri. Three of the articles reported consistent results of activity in the dorsolateral prefrontal cortex during downregulation, two in all participants and one only in the healthy control group. However, no significant group differences were found in this region during cognitive reappraisal. The discussion includes limitations regarding the comparability of the included studies, such as the method of eliciting negative affect, the use of written or verbal instructions, and the cognitive reappraisal strategy applied. Further research is necessary to better understand the involvement of distinct brain regions in cognitive reappraisal and BPD, as well as to establish more standardized research methods. These efforts can offer comprehensive insights into the neural mechanisms underlying cognitive reappraisal in individuals with BPD.

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Morbid obesity, defined by having a BMI of 40 or greater, has gained increasing attention. Despite a greater number of bariatric surgery cases for the treatment of obesity, research has demonstrated concerning results for patients, particularly involving weight regain and the development of mental illness. Patients seeking bariatric surgery are often required to complete a psychological evaluation to determine readiness for the procedure and associated post-operative lifestyle changes. However, research suggests mixed results in determining predictors for post-surgical success. Few studies have looked at emotionality and eating patterns in bariatric surgery seeking patients, though emotional eating is often talked about in the literature. It is likely that emotional eating and problematic patterns of emotional regulation that may contribute to obesity carry implications for post-surgical mental health and weight loss maintenance. In the current study, 30 bariatric surgery-seeking patients have thus far completed the Dutch Eating Behaviors Questionnaire and the Difficulties in Emotion Regulation Scale. Preliminary data suggest a significant relationship between emotional eating patterns and a difficulty in emotion regulation (r= .397, p = .049). Trends toward significance were also discovered between difficulties in emotion regulation and restricted and external eating patterns (restrained, r = -.356, p = .081; external, r = .330, p = .099). This preliminary data is part of a larger study on emotion and eating patterns in bariatric surgery seeking patients, and additional data will help us better understand these relationships. Results may have implications for intervention regarding emotional dysregulation prior to and following bariatric surgery.