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.
Affect infusion model
The Affect infusion model (AIM) is a theoretical model in the field of human psychology. Developed by social psychologist Joseph Paul Forgas in the early 1990s, it attempts to explain how mood affects one's ability to process information. A key assertion of the AIM is that the effects of mood tend to be exacerbated in complex situations that demand substantial cognitive processing. In other words, as situations become more complicated and unanticipated, mood becomes more influential in driving evaluations and responses.