Prolonged Grief Disorder Treatment (PGDT/CGT) vs Worden's Task Model of Mourning

Prolonged Grief Disorder Treatment (PGDT/CGT)

Tradition

Integrative

Founder

M. Katherine Shear (2005)

Review status

1 condition assessment available

Official sources

Guidelines and official sources (1)

1 professional reference check

Read the recommendation and its scope. A source may discuss an approach without recommending it.

• Prolonged Grief Disorder: patient and family information

  American Psychiatric Association · Current information checked September 2026 · Professional reference · Treatment; Prolonged Grief Disorder in the DSM

  Discussed in the source

  The association discusses prolonged-grief therapy in patient information. This is distinct from a clinical practice guideline, and DSM recognition of the diagnosis is not treatment endorsement.

  Scope: Information about prolonged grief disorder and treatment approaches.

  Source checked 2026-09-06

Focus

Processing + Restoration

Format

Individual

Duration

16 sessions

Condition-specific assessments

Each conclusion applies to the population and use described. These source-based assessments do not certify the full entry or replace expert clinical review.

Grief & Loss

Population and scope: Bereaved adults aged 18–95 with clinically primary complicated grief in the 2016 trial; 16-session CGT added to placebo plus structured clinical management.

Randomized studies

Shear et al. (2016) randomized 395 adults to citalopram or placebo, with or without CGT. At 20 weeks, CGT plus placebo improved grief-response rates compared with placebo plus clinical management. Adding citalopram did not significantly improve the grief-response outcome, although depressive symptoms improved. This was not an IPT comparison. Missing assessments remained a limitation despite statistical adjustment; the sample was predominantly White, female and well educated. The historical complicated-grief criteria are not identical to current PGD criteria. Findings do not grade routine early bereavement, every grief therapy or suicide prevention.

Source assessment dated 2026-09-06

• Shear et al. 2016, original CGT trial: methods, outcomes and limitations

Worden's Task Model of Mourning

Tradition

Integrative

Founder

J. William Worden (1982)

Review status

Framework — unranked

Focus

Grief + Adaptive

Format

Individual, group

Duration

Variable (weeks to years)

Prolonged Grief Disorder Treatment (PGDT/CGT)

Core mechanism: Revisiting the death narrative integrates the reality of loss + imaginal conversations transform the continuing bond + restoration goals rebuild engagement with life

Ontology: Prolonged grief as a failure of natural adaptation: the attachment system cannot update to accommodate the permanence of loss, leaving the bereaved stuck between wanting the person back and knowing they are gone

Worden's Task Model of Mourning

Core mechanism: Active engagement with four developmental tasks transforms acute grief into integrated loss; failure to accomplish tasks results in complicated mourning

Ontology: Grief is active work requiring engagement, not a passive process to endure; complicated grief results from incomplete task accomplishment

Prolonged Grief Disorder Treatment (PGDT/CGT)

Philosophical roots: Bowlby (attachment); Shear (complicated grief as attachment disorder); Foa (emotional processing applied to grief); Klass & Silverman (continuing bonds); Stroebe & Schut (dual process model, source of the loss-oriented and restoration-oriented halves of the protocol); Worden (task model of mourning); DSM-5-TR nosology

Blind spots: Revisiting exercises may feel coercive for clients whose culture doesn't value explicit grief narration; the highly structured protocol may not suit every grieving style; much less evidence for non-death losses than for bereavement; 16-session format may be insufficient for losses compounded by other traumas; PGD diagnosis itself is debated as potentially pathologizing normal grief

Therapeutic voice: I'd like you to close your eyes and tell me the story of the day he died. Start a little before you knew, and tell it as though it's happening now, in the present tense. We'll go about ten minutes. I'm recording it so you can listen at home, and I'm right here the whole time.

Worden's Task Model of Mourning

Philosophical roots: Bowlby (attachment and loss); Klass, Silverman & Nickman (continuing bonds); Stroebe & Schut (dual process model as complement); Parkes (psychosocial transitions)

Blind spots: Task model can imply a normative sequence that doesn't match all cultural grief expressions; can pathologize grief that doesn't follow expected trajectory; limited attention to systemic and disenfranchised grief; applying the tasks as a fixed sequence is a clinician error rather than a contraindication, since the framework is not unsafe when it is forced, it is simply no longer the framework

Therapeutic voice: You keep saying you should be further along by now. I don't think grief runs on a schedule, but I do think there's work in it. And right now it sounds like some part of you is still listening for his key in the door. Can we stay with that for a minute?