Kübler-Ross model Kübler-Ross model The Kübler-Ross model is popularly known as the five stages of grief, though more accurately, the model postulates a progression of emotional states experienced by terminally ill patients after diagnosis. The five stages are chronologically: denial, anger, bargaining, depression and acceptance. The model was first introduced by Swiss-American psychiatrist Elisabeth Kübler-Ross in her 1969 book "On Death and Dying", and was inspired by her work with terminally ill patients. Motivated by the lack of instruction in medical schools on the subject of death and dying, Kübler-Ross examined death and those faced with it at the University of Chicago
Animal grief sulked and barely moved. Brown deciphered that the male chimpanzee was depressed after the female chimpanzee died. However, Brown concluded that any permanent grief is only found in man, as the chimpanzee seemed fine after a couple of days. William E. Ritter (1925) connects animal and human emotion to provide evidence of human descent from the animal kingdom. He mentions the James-Lange theory, where "all emotional stages as of joy, grief, fear, anger, jealousy, love, are associated with more or less characteristic bodily manifestation". Ritter proposes new evidence to the theory, mentioning that no item on the above list is