Short-form video applications (SVAs) have been gaining increasing popularity among users, which has raised the concern of problematic SVA use. Flow—a positive experience in which individuals feel immersion, enjoyment, temporal dissociation, and curiosity—contributes to the development of problematic SVA use. Most of the prior research examined the motivations of flow and the self-traits that trigger flow, but paid limited attention to the technological affordances of smartphone applications that facilitate users' flow. Algorithm recommendation, multimodality, and low-cost interaction are three affordances of SVAs. Thus, drawing upon the stimulus-organism-response (S-O-R) framework, this study proposes a mediation model to examine how these affordances influence problematic SVA use through flow. An online survey (N = 621) showed that algorithm recommendation was negatively associated with problematic SVA use but was not significantly correlated to flow. Multimodality was directly and positively associated with problematic SVA use. Meanwhile, the relationship between these two variables were mediated by flow. Low-cost interaction had an indirect link with problematic SVA use via flow, while the direct link between them was not significant. The results suggest that low-cost interaction is the affordance that is most likely to trigger flow and problematic SVA use, followed by multimodality. However, algorithm recommendation seems to be an affordance that is less likely to facilitate flow or cause problematic SVA use. Our proposed model not only enriches the S-O-R framework in the digital environment, but also denotes a techno-psychological approach to examine problematic use of SVAs and other digital applications. Moreover, the findings offer practical implications for optimizing SVAs' technological affordances to properly manage problematic SVA use.

This research investigated how implicit theories of health and consideration of future consequences influence people’s engagement in health-protective behaviors during the COVID-19 pandemic in China. Three hundred and ninety Chinese completed the study during the peak period of COVID-19 pandemic in China. Gender, education level, implicit theories of health, and consideration of future consequences were significant predictors of people’s engagement in health-protective behaviors. Consideration of future consequences mediated the effect of implicit (incremental) theories of health on people’s engagement in health-protective behaviors. Implications of the current research for promoting engagement in health-protective behaviors during pandemics of infectious diseases and directions for future research are discussed.

Objective: Recent research suggests that stress mindset influences how people response to stress, however, there is a dearth of research investigates the underlying mechanism accounting for the effects of stress mindset on psychological health. The current research investigated how stress mindset and engagement in proactive coping behaviors predicted posttraumatic growth among health care professionals during the COVID-19 pandemic in China. Method: Health care professionals (N = 589) from mainland China were invited to participate in this online study through completing the Stress Mindset Measure, Posttraumatic Growth Inventory (PTGI-X), and measurement on engagement in proactive coping behaviors and demographic variables at their convenience from July 9 to July 17, 2020. Results: Health care professionals reported high levels of posttraumatic growth at the total scale (58.6%), subdomains (84.9%). Age, stress mindset, and engagement in proactive coping behaviors were significant predictors of posttraumatic growth among health care professionals. Engagement in proactive coping behavior mediated the predicting effect of stress mindset on posttraumatic growth among health care professionals in China. Conclusion: A stress-is-enhancing mindset predicts higher level of posttraumatic growth among health care professionals during the COVID-19 pandemic in China, and the effect was mediated by engagement in proactive coping behaviors. Clinical Impact Statement The COVID-19 pandemic induced widespread stress among both health care professionals and the general public. The current research demonstrated that adopting the stress-is-enhancing mindset and engagement in proactive coping behaviors significantly predicted posttraumatic growth among health care professionals in China during COVID-19, with engagement in proactive coping behaviors mediated the relationship between stress-is-enhancing mindset and posttraumatic growth. The results have implications for health care organizations to improve the mental health of health care professionals by cultivating the stress-is-enhancing mindset and promoting engagement in proactive coping behaviors during COVID-19.