This research utilized multi-source data and intensive longitudinal methods to clarify how both internal (intrapersonal) and external (interpersonal) perfectionism processes predict psychological maladjustment. By collecting data from multiple perspectives and tracking participants' experiences in real-time over a five-year period, the study aimed to distinguish between the pressure individuals place on themselves and the pressure they perceive from others. The findings highlight how these distinct but related perfectionism dimensions interact to influence daily emotional functioning and long-term mental health outcomes. By identifying the specific mechanisms through which perfectionistic tendencies lead to distress, the research offers a more nuanced understanding of how to target these behaviors in clinical interventions. This work emphasizes the importance of addressing the social context of perfectionism alongside individual thought patterns to better support those struggling with maladaptive traits. Note: Winner of the Canadian Psychological Association Certificate of Academic Excellence.

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This research explored the long-term impact of early attachment styles on the quality of adult romantic relationships, specifically investigating the mediating roles of emotion regulation and conflict resolution strategies. By tracking the developmental trajectory from early caregiving experiences to adult intimacy, the study aimed to understand why certain attachment patterns lead to higher relationship satisfaction while others contribute to distress. The findings highlighted that the ability to effectively regulate emotions and employ constructive conflict resolution techniques—such as compromise and active listening—serves as a critical bridge between early security and later relationship success. Conversely, difficulties in these areas were found to exacerbate the negative effects of insecure attachment on relationship longevity and happiness. This work provides valuable insights for clinical interventions and couples therapy, emphasizing the importance of fostering self-regulation skills to break cycles of relational instability rooted in early childhood.

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This research aimed to clarify the mechanisms of restraint theory by investigating whether physiological and neurological markers could predict disinhibited eating behaviors in restrained eaters. Specifically, the study examined heart rate variability (HRV) as a potential predictor and mitigator of "overeating" episodes, while also considering the moderating role of frontal brain asymmetry. By monitoring these physiological signals, the research sought to identify whether certain individuals are more biologically predisposed to lose control over their eating habits when under stress or caloric restriction. The findings provide a deeper understanding of the "boundaries" of restraint, suggesting that internal self-regulatory strength—indicated by HRV—interacts with neurological patterns to influence eating behavior. This work offers significant implications for developing personalized interventions for disordered eating, emphasizing the importance of physiological self-regulation in managing dietary restraint.

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