John Bowlby was a British psychologist best known for his work in attachment theory. He believed that the bonds formed between children and their primary caregivers are crucial for emotional development. Bowlby conducted research that highlighted how these early relationships influence behavior and relationships throughout life. His theories were influenced by his observations of children and his studies on the effects of separation from caregivers. Bowlby’s work laid the foundation for further research in psychology and child development, impacting fields such as psychotherapy, education, and social work. His ideas continue to be relevant in understanding human relationships today.