Imprinting- The process of which animals form strong attachments during early life critical period
Strange Situation- a procedure for studying child-caregiver attachment, a child is placed in an unfamiliar environment while their caregiver leaves and returns, then the child's behaviors are observed.
Secure attachment- Although in a new environment, if their mother's presence is there, the infant will happily explore the environment, and when she leaves, the infant becomes distressed, demonstrating secure attachment.