3papers in this issue.
This study aimed to verify the longitudinal mediating effect of depression and perceived social support in the relationship between loneliness and life satisfaction during the COVID-19 Pandemic period. The first survey was conducted from February 19 to March 3, 2021, and the second survey was conducted from October 19 to November 17, 2021. First, depression was found to mediate the relationship between loneliness and life satisfaction. Second, depression and perceived social support showed a double mediating effect in the relationship between loneliness and life satisfaction. Third, the path through which loneliness directly affects life satisfaction was not significant, and it was confirmed that loneliness had a significant effect on life satisfaction through depression and perceived social support. This is expected to contribute to increasing individual’s lower life satisfaction by considering the characteristics of depression and perceived social support in conducting interventions for individuals who experienced loneliness during the COVID-19 period.
Cognitive Reserve (CR) refers to the individual’s neuropsychological properties that enable better cognitive performance than what is expected based on current levels of brain resources or pathology. Aging is often accompanied by pathological changes such as a brain atrophy as well as the accumulation of neural plaques or neurofibrillary tangles, leading to functional decline in various cognitive domains. CR, accumulated through diverse experiences in the life course, serves to delay negative outcomes and pathological manifestations of aging. Consequently, it is crucial to understand the concept and mechanisms of CR in this rapidly aging society. This paper comprehensively reviewed the concept and theoretical framework, clinical manifestations, mechanisms, and measurement methods of CR. Additionally, the dynamic aspects of CR, suggestive interventions during late life, and specific considerations for Korean society were also discussed.
Hybrid collaboration is a method where individuals first tackle tasks independently before utilizing their outcomes collaboratively. Prior studies have demonstrated its superiority in idea generation tasks over starting with collaboration from the outset. This research introduces an innovative collaborative method by integrating feedback into the hybrid collaboration and examines its effect on a decision-making task. To assess the effectiveness of feedback, a hidden profile task was employed. The experiment was conducted with 267 undergraduate students, who were randomly assigned to one of three conditions: traditional collaboration(working together from the start), hybrid collaboration, and feedback-enhanced hybrid collaboration. Participants carried out tasks under these conditions, with their performance later evaluated to compare the decision quality and the discussion quality. Decision quality was evaluated based on accuracy, while discussion quality was measured through intensity and bias. Findings indicated that the feedback-enhanced hybrid collaboration achieved the highest decision accuracy, with no significant difference between hybrid and traditional collaboration. Discussion intensity was highest in the group with feedback-enhanced hybrid collaboration, followed by the hybrid collaboration, and finally, the traditional collaboration. No significant differences in discussion bias were detected across the various collaboration methods. These findings imply that integrating feedback into collaborative processes can improve group decision-making performance in hidden profile situations.