Clarifying the role of intra- and interpersonal processes in predicting maladjustment using multi-source and intensive longitudinal methods - Shakira Mohammed (2025)

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.