Loss

Bowlby's four stages of Loss observed through studies of attachment; Klein’s integration of loss in the Depressive Position (see above) and Bowlby’s Loss are seen as essential process for integration and healthy emotional development. .

• numbing that usually lasts from a few hours to a week and may be interrupted by outbursts of extremely intense distress and/or anger.
• yearning and searching for the lost figure lasting some months or sometimes for years.
• disorganization and despair.
• greater or less degree of organization

(Bowlby’s original 3-phase process of Loss was published in "Processes Of Mourning" Int. J. Psycho-Anal. 42:317-40.