The "Strange Situation" is a research method developed by psychologist Mary Ainsworth in the 1970s to assess the attachment styles of infants. It involves a series of structured episodes where a child is observed in a controlled environment, typically a room with toys, while their caregiver and a stranger interact with them. The procedure includes separations and reunions to evaluate the child's responses to stress and comfort. Through this method, Ainsworth identified three main attachment styles: secure, insecure-avoidant, and insecure-resistant. These styles reflect how children bond with their caregivers and can influence their emotional and social development throughout life. The "Strange Situation" remains a foundational tool in developmental psychology.