Developmental psychology
Attachment theory, originally developed by John Bowlby, focuses on the importance of open, intimate, emotionally meaningful relationships. Attachment is described as a biological system or powerful survival impulse that evolved to ensure the survival of the infant. A child who is threatened or stressed will move toward caregivers who create a sense of physical, emotional and psychological safety for the individual. Attachment feeds on body contact and familiarity. Later Mary Ainsworth developed the Strange Situation protocol and the concept of the secure base.
Mindfulness
Acceptance and commitment therapy or (ACT) (typically pronounced as the word "act") is a form of clinical behavior analysis (CBA) used in psychotherapy. It is a psychological intervention that uses acceptance and mindfulness strategies mixed in different ways with commitment and behavior-change strategies, to increase psychological flexibility. The approach was originally called "comprehensive distancing". It was developed in the late 1980s by Steven C. Hayes, Kelly G. Wilson, and Kirk Strosahl.