Andreas Maercker

When confronted with a traumatic event, people may suffer from adverse posttraumatic outcomes, such as posttraumatic stress disorder (PTSD) or complex PTSD (CPTSD). Positive psychology research has shown that meaning in life and vitality are potentially correlated protective factors against negative developments following trauma exposure that can lead to PTSD or CPTSD. This systematic review aimed to synthesize global empirical research findings, emphasizing the impact of meaning in life and vitality on both PTSD and CPTSD. A search of empirical studies was performed within the Embase, Scopus, and Web of Science core collection databases, as well as PsycInfo, using the PRISMA checklist. A total of 29 studies were included after a systematic exclusion process. The collective findings from 22 studies examining meaning in life and five studies focusing on vitality revealed a consistent negative association with symptoms of PTSD. No study that explored the associations among meaning in life, vitality, and CPTSD was found. In contrast to vitality, meaning in life has been extensively studied in relation to traumatic stress worldwide, and few discrepancies in results were found. This systematic review identified the need to intensify scientific efforts in capitalizing on meaning in life as a possible target for psychological interventions, especially for trauma survivors globally, and to consider vitality as a protective factor that needs more empirical attention in relation to posttraumatic stress. Furthermore, there is a need for studies that encompass diverse target samples and employ longitudinal study design to examine the associations between protective factors and CPTSD.