The Association Between Birth Order & Attachment Style


  • Molly Clayton
  • Cassidy Colalillo
  • Jaskiran Guraya
  • Fatima Malik
  • Margaret Miller
  • Emily Vieira


This study explores the potential influence of birth order on individuals' attachment styles, situated within the framework of attachment theory. The research investigates the correlation between attachment styles and sibling birth order, focusing on attachment orientations that develop during childhood. Attachment is defined as an individual's relationship orientation and response to relationship aspects, categorized as secure, avoidant, anxious-ambivalent, and disorganized-disoriented (Ainsworth et al., 1978; Bowlby, 1959; Miller, 2022). Sibling birth order is considered in relation to an individual's birth position (e.g., first-born, second-born, etc.). The paper comprises sections such as a literature review, outlining previous research, a theoretical foundation discussing attachment theory and its styles, and a research methodology detailing the research question, data analysis, and project management plan. The study aims to provide insights into the connection between birth order and attachment styles, contributing to the understanding of attachment theory's applicability in Western contexts.






Thesis Papers