Evolution of Grief Theory. Three circles on a linear line. In each circle there is text that describes the evolution of grief theory. Text will describe each evolution. 1. Stages (implies linear, Neat & Tidy) 2. Tasks/Processs (Grief work is not necessarily linear) 3. and more... (Identity, meaning, and beyond) 1969 EKR: 5 Stages of Grief (Dying) 1970 Bowlby & Parkes: Four Phases 1982/2009 W. Worden: 4 Tasks of Mourning 1993 T. Rando: 6 R Processes of Mourning 1996 Silverman, Klass & Nickman: Continuing Bonds 1999 Dual Process Model Stroebe & Schut 2009 Berger: Identities of Grievers