The Kübler-Ross model, commonly known as The Five Stages of Grief, was first introduced by Elisabeth Kübler-Ross in her 1969 book, On Death and Dying.

Included in the book was a model, The Model of Coping with Dying, which was based on her research and interviews with more than 500 dying patients. It describes, in five discrete stages, a process by which people cope and deal with grief and tragedy, especially when diagnosed with a terminal illness or experience a catastrophic...