Bowlby's definition

John Bowlby was a British psychologist and psychiatrist who is best known for his work on attachment theory. Bowlby defined attachment as a "lasting psychological connectedness between human beings." He believed that attachment is a fundamental aspect of human development and is essential for emotional and social well-being. According to Bowlby, attachment is formed through interactions with primary caregivers, typically parents, and plays a crucial role in shaping a person's relationships and behavior throughout their life.

Bowlby's definition of attachment:

Attachment is a lasting psychological connectedness between human beings. It is an adaptive behavior that promotes survival and security. Attachment is formed through repeated interactions between a caregiver and a child, and it is characterized by a sense of safety, trust, and reliance.