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This self-report measure evaluates perceived positive psychological change following exposure to a highly stressful or traumatic event. The Posttraumatic Growth Inventory (PTGI), developed by Richard G. Tedeschi and Lawrence G. Calhoun, assesses change across several domains commonly described in the posttraumatic growth literature.
It consists of 21 items and typically requires about 4 minutes to complete. Items ask respondents to rate the degree to which they have experienced specific changes since the event, including shifts in relationships, recognition of new possibilities, perceived personal strength, appreciation of life, and spiritual or existential change. The Posttraumatic Growth Inventory (PTGI) is used in clinical and research settings to support case formulation and to monitor perceived growth over time alongside other indicators of adjustment.