Five adaptive survival styles are set in motion depending on how well the five biologically based core needs are met—or not met—in early life. These adaptive strategies, or survival styles, are ways of coping with the disconnection, dysregulation, disorganization, and isolation that a child experiences when core needs are not met.
Heller argues that survival is not a momentary response but a structured developmental orientation, producing enduring 'survival styles' organized around the failure of core biological needs.
, Healing Developmental Trauma How Early Trauma Affectsthesis