Elisabeth Kübler-Ross introduced the five stages of grief, denial, anger, bargaining, depression, and acceptance, in 1969, based on her clinical observations of terminally ill patients confronting their own impending death. The framework was groundbreaking for its time: it took seriously the emotional experience of dying at a moment when medicine largely avoided the subject, and it gave clinicians language for conversations that the profession had not equipped them to have. But the model was never intended to describe a universal, sequential process through which all bereaved people must pass. In the five decades since its publication, it has been misapplied so broadly and so consistently that the misapplication has become the dominant popular understanding of grief.
What the Research Actually Shows
Contemporary grief research presents a more varied and more accurate picture. George Bonanno's decades of work at Columbia University, using prospective longitudinal designs that follow bereaved individuals from before loss through multiple years afterward, identifies at least four distinct grief trajectories. The most common, shown by roughly half to two-thirds of bereaved adults, is resilience: a trajectory characterized by acute sadness and disruption in the immediate aftermath of loss, followed by relatively rapid return to baseline functioning without prolonged impairment. This does not mean these individuals did not love deeply or grieve genuinely. It means that grief, for many people, is an acute response rather than a prolonged disorder.
A second trajectory involves gradual recovery, which takes longer but reaches a similar endpoint. A third involves chronic grief, in which impairment is significant and sustained over years. A fourth involves delayed grief, in which functioning is initially maintained and impairment emerges months later. The existence of these distinct trajectories means that a single stage model cannot accommodate the actual diversity of grief experience, and that expecting grief to follow a prescribed sequence misrepresents what most bereaved people experience and pathologizes natural resilience.
Prolonged Grief Disorder
A minority of bereaved individuals, estimated at between 10 and 15 percent, experience prolonged grief disorder (PGD), a condition characterized by intense yearning for the deceased, difficulty accepting the reality of the loss, functional impairment lasting more than a year, and a grief experience that does not naturally diminish over time. PGD is distinct from depression and PTSD, though it can co-occur with both. It is now recognized as a diagnosable condition in DSM-5-TR, and evidence-based treatments for it have been developed and validated in randomized trials.
Complicated grief treatment and prolonged grief therapy, both developed specifically for PGD, show significant efficacy in reducing grief symptoms and restoring functioning. They work by targeting the specific processes that maintain prolonged grief, particularly avoidance of reminders of the loss and difficulty integrating the loss into an ongoing sense of meaning and identity. They are more effective than standard depression treatment for this specific condition, which underscores the importance of accurate assessment rather than assuming that grief-related depression responds to standard antidepressant approaches.
What Supportive Care Looks Like
For the majority of bereaved people who will recover through natural processes, the most valuable support is often social rather than clinical: presence without pressure to perform recovery on any particular timeline, practical assistance with the overwhelming logistics of loss, and space to grieve in ways that reflect individual personality and cultural context rather than stage-model prescriptions. The most unhelpful response to grief is the one that communicates that the bereaved person's emotional experience is wrong, too intense, not intense enough, or not following the expected pattern. Grief is not a problem requiring a solution. It is a natural response to loss that takes the form it takes, in the time it takes, for reasons that are deeply individual.
