Attachment and the processing of social information across the life span: Theory and evidence. Attachment and the experience and expression of emotions in adult romantic relationships: A developmental...Attachment and the processing of social information across the life span: Theory and evidence. Attachment and the experience and expression of emotions in adult romantic relationships: A developmental perspective. The influence of temperament and mothering on attachment and exploration: An experimental manipulation of sensitive responsiveness among lower-class mothers with irritable infants.