Stern (1985) sees attunement as the basis for the emerging sense of self in the pre-verbal infant: Tracking and attuning… permit one human to be with another in the sense of sharing likely inner experience on an almost continuous basis.
This passage presents Stern’s attunement concept as the developmental cornerstone of intersubjective selfhood and links it directly to the secure-base phenomenon in attachment-informed therapy.
, John Bowlby and Attachment Theory (Makers of Modern, 2014thesis