Transition facilitating behavior is introduced as a concept bridging attachment theory and British object relations theory. Examples of this behavior are given as they manifest themselves in normal mother-infant interaction. The origin of this normative pattern of behavior is examined in light of both the earlier-mentioned theoretical frameworks and its implications for development. Detailed examples are presented through infant observation in a newborn intensive care unit, and breakdown of the behavior is presented through clinical vignettes. Transition facilitating behavior is identified as an indication of the “containing process” present in the mind of the caretaking figure and as evidence of the “caretaking system” activated in the mother.