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Perara at the Family Rehabilitation Center in Sri Lanka for facilitating data collection. This publication was made possible through the support of grant #24322 from the John Templeton Foundation awarded to Eranda Jayawickreme. The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of the John Templeton Foundation.

is a Postdoctoral Assistant for the Wake Forest Department of Engineering supporting with the development and assessment of character and ethics education in the engineering program. Since 2015 until her current position at Wake Forest she worked as the Director of Research at a youth development non-profit, The Future Project, which has worked with tens of thousands of underserved high school students nationwide to support their development of purpose, agency, hope, and resilience. Prior to this, she spent a decade as a STEM educator (mostly K-12). Her primary interests are in bridging research to practice to create deeply meaningful and impactful educational experiences. Jessica completed her PhD in Adolescent Motivational Psychology from the University of Pennsylvania Graduate School of Education in 2017. She also has a BA in Biochemistry from The Colorado College, and an MS in Chemistry from

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Though research on assessing posttraumatic growth has been severely critiqued, some evidence suggests close others can observe and report changes in individuals following traumatic life events and are sensitive to idiosyncratic ways in which changes manifest. We extended these findings by investigating corroboration of self-perceived posttraumatic growth (PTG) and depreciation (PTD) as measured by the Posttraumatic Growth Inventory–42 (PTGI-42) among Sri Lankan Tamil war survivors (n = 200). Informants slightly corroborated overall levels of PTG and PTD, while a more nuanced profile analysis procedure revealed overall—but not distinctive—profile agreement. This suggests self–other agreement is modest and may partly reflect shared narratives and collective cultural understandings about how people change after trauma. Results demonstrate further that informants were not sensitive to idiosyncratic ways in which target individuals had changed. Together, the lack of validity evidence suggests that the PTGI-42 may be inadequate in some cross-cultural contexts as a measure of nuanced posttraumatic change (i.e., as a measure of specific changes in the five theorized domains of growth and depreciation). Future work should emphasize culture- and context-sensitive measurement of posttraumatic change, particularly focusing on methods other than retrospective self-reports, such as prospective longitudinal designs.