Hokkaido University · Psychology
Professor Kuniyoshi Toyoshima's research lab focuses on the interplay between mental health, cognitive function, and psychosocial functioning in community-dwelling adults. The lab investigates how subjective cognitive complaints, depressive symptoms, and anxiety-related factors influence work performance, quality of life, and functional disability. A central theme is the mediating role of cognitive complaints in linking psychological symptoms to real-world outcomes such as presenteeism and social functioning.
Figures are computed from collected data and may differ slightly.
Our results suggest that work limitations may be predicted by not only depressive symptoms but also cognitive complaints. Moreover, subjective cognitive impairment may mediate the effect of depressive symptoms on presenteeism among adult workers.
Changes in subjective cognitive function may affect QoL via depressive symptoms. Evaluations of subjective cognitive function may help identify factors that reduce QoL.
Complaints of cognitive functions (CCFs), defined as subjective cognitive dysfunction, affect social function; additionally, for workers, this condition is an important factor in presenteeism and mediates the effect of depressive symptoms on presenteeism. This study aimed to investigate whether CCFs mediate the relationships among insomnia, state anxiety (SA), and presenteeism. Participants were 471 Japanese adult workers evaluated using the Athens Insomnia Scale, State-Trait Anxiety Inventory (
Childhood maltreatment indirectly affects functional disability via depressive symptoms and via cognitive function through depressive symptoms. We suggest that depressive symptoms and cognitive function play crucial roles in the influence of childhood maltreatment on functional disability in adult community volunteers.
The role of cognitive complaints may be different between SWB and SIB associated with trait anxiety and depressive symptoms. Evaluating the mediating effect of cognitive complaints may be more useful on SIB than SWB associated with trait anxiety and depressive symptoms. These findings may be useful when considering intervention targets in mental health.
Subjective cognitive function mediates the effect of affective temperaments on functional disability in Japanese adults. However, the cross-sectional design may limit the identification of causal associations between the parameters. In the present study, the participants were from a specific community population; therefore, the results may not be generalizable to other communities.
Stressful life events can elicit depressive symptoms, and biological traits like the behavioral inhibition system (BIS) and the behavioral activation system (BAS) also influence depressive symptoms. However, the roles of BIS and BAS as moderators in the relationship between stressful life events and depressive symptoms are not well known. Therefore, this study investigated the effect of the interaction between BIS and BAS and stressful life events. A total of 286 adult community volunteers in Ja
The results suggest that SCI and presenteeism mediate the associations of rumination with SWB and SIB in Japanese adult workers. To address the psychological well-being associated with rumination, evaluating SCI and presenteeism simultaneously may be useful in occupational mental health. This study provides key insights into the development of comprehensive intervention strategy based on the biopsychosocial perspective for worker's psychological well-being.
This study suggests that CCs mediate the associations of sleep disturbance and state anxiety with SWB and SIB, respectively, in adult community volunteers. To address SWB and SIB associated with sleep disturbance and state anxiety, evaluating CCs may be useful in public mental health. Our findings will encourage health care workers to assess CCs more systematically. Future studies may need to target CCs to develop interventions for SWB and SIB.
Depressive symptoms (DepS) associated with major depressive disorder (MDD) are influenced by affective temperaments (ATs), behavioral inhibition system (BIS), and behavioral activation system (BAS). However, the effect of interactions between ATs and BIS/BAS on DepS in MDD remains poorly understood. Herein, we aimed to investigate the effects of these interactions. The Temperament Evaluation of Memphis, Pisa, Paris, and San Diego Auto-questionnaire (TEMPS-A), BIS/BAS questionnaire, and Patient H
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