Studies examining the association between personal growth initiative (PGI) and post-traumatic stress symptoms (PTSS) have often utilized cross-sectional research designs, and as a result, the changes in the levels of PGI and its association with the trajectory of PTSS remain unclear. The current study aimed to (1) explore the different trajectories in both PGI and PTSS and (2) examine the associations of the identified trajectories between PGI and PTSS among individuals. The final sample were 419 adults who were physically residing in the area when Hurricane Harvey made landfall on 26 August 2017. The initial data collection occurred approximately 16 months after the Hurricane, and participants were asked to participate again after 1-and 3-month later. A result from the latent growth mixture modeling revealed that for PGI, the 4-class model was the best-fitting model, and for PTSS, the 3-class model was the best-fitting model. When examining the association between the trajectories of PGI and PSS, individuals classified to higher PGI subgroups were more likely to be associated with the Recovery PTSS subgroup. The current study suggests that disaster survivors with higher PGI were more likely to recover from PTSS, raising an importance of incorporating PGI to alleviate future PTSS.
K E Y W O R D Slatent growth mixture modeling, natural disaster, personal growth initiative, post-traumatic stress symptoms, trajectories
| INTRODUCTIONAfter a disaster, experiencing psychopathology is not uncommon where the prevalence rate of post-traumatic stress disorder (PTSD) typically range from 5% to 40% (Goldmann & Galea, 2014). Although a prevalence rate of PTSD is typically higher following human-made disasters, which can range from 25% to 75% (Galea, Nandi, & Vlahov, 2005) and the odds of PTSD were found to be significantly higher after human-made disasters than natural disasters (Bromet et al., 2017), research has also shown that it is not uncommon for the survivors of a large-scale Hurricane to experience post-traumatic stress symptoms (PTSS; DeSalvo et al., 2007). Furthermore, factors such as proximity of the disaster, greater intense exposure and experiencing ongoing stressors (e.g., property damage and displacement) can also influence mental health outcomes (Goldmann & Galea, 2014). These statistics increase the importance of examining the mental health following a natural disaster, which can influence millions of people.Although the prevalence of PTSD and its symptoms may be high, studies have also shown that some are more resilient than others, experiencing lower PTSS (Bonanno, 2004). In examining a potential protective factor against PTSS, researchers have explored the role of personal growth initiative (PGI;Robitschek et al., 2012) in the aftermath of a traumatic event (Blackie, Jayawickreme, Forgeard, &