Decision making and its associations to neurocognitive functions, psychopathology, and the home environment in seven-year-old children at familial high risk of schizophrenia or bipolar disorder: The Danish High Risk and Resilience Study VIA 7

Personality traits, mindfulness, and perceived stress in Chinese adults: a sequential explanatory mixed-methods approach

Background

This study explores how personality traits and mindfulness facets interact to influence perceived stress, focusing on a Chinese adult sample. It aims to address gaps in understanding the combined effects of dispositional and mindfulness factors on stress.

Methods

A sequential explanatory mixed-methods design was employed. In the quantitative phase, 637 Chinese adults completed surveys measuring personality traits, mindfulness (attention, acceptance), and perceived stress. Hierarchical multiple regression, moderation, and mediation analyses were conducted. In the qualitative phase, semi-structured interviews with selected participants provided deeper insights into the quantitative findings.

Results

Neuroticism (β = 0.29, p < 0.001) and conscientiousness (β = 0.15, p < 0.01) were positively associated with perceived stress, while mindfulness-acceptance (β = -0.25, p < 0.001) was a significant negative predictor. Neuroticism and mindfulness-acceptance uniquely explained 8 and 6% of the variance in stress, respectively. Mindfulness-attention moderated the relationship between agreeableness and stress, amplifying agreeableness' stress-buffering effect in individuals with low mindfulness-attention. Mediation analysis revealed mindfulness-acceptance partially mediated the agreeableness-stress link. Qualitative interviews underscored the role of personality and mindfulness in shaping stress responses and coping mechanisms.

Conclusion

The findings highlight mindfulness-acceptance as a critical factor in reducing stress, particularly in individuals with agreeable personalities. These results support the development of mindfulness-based interventions targeting acceptance to enhance stress resilience across diverse personality profiles.

Global reward processing deficits predict negative symptoms transdiagnostically and transphasically in a severe mental illness-spectrum sample

Reward processing impairments are a key factor associated with negative symptoms in those with severe mental illnesses. However, past findings are inconsistent regarding which reward processing components are impaired and most strongly linked to negative symptoms. The current study examined the hypothesis that these mixed findings may be the result of multiple reward processing pathways (i.e., equifinality) to negative symptoms that cut across diagnostic boundaries and phases of illness. Participants included healthy controls (n = 100) who served as a reference sample and a severe mental illness-spectrum sample (n = 92) that included psychotic-like experiences, clinical high-risk for psychosis, bipolar disorder, and schizophrenia participants. All participants completed tasks measuring four RDoC Positive Valence System constructs: value representation, reinforcement learning, effort-cost computation, and hedonic reactivity. A k-means cluster analysis of the severe mental illness-spectrum samples identified three clusters with differential reward processing profiles that were characterized by: (1) global reward processing deficits (22.8%), (2) selective impairments in hedonic reactivity alone (40.2%), and (3) preserved reward processing (37%). Elevated negative symptoms were only observed in the global reward processing cluster. All clusters contained participants from each clinical group, and the distribution of these groups did not significantly differ among the clusters. Findings identified one pathway contributing to negative symptoms that was transdiagnostic and transphasic. Future work further characterizing divergent pathways to negative symptoms may help to improve symptom trajectories and personalized treatments.

A review of risky decision-making in psychosis-spectrum disorders

The investigation of risky decision-making has a prominent place in clinical science, with sundry behavioral tasks aimed at empirically quantifying the psychological construct of risk-taking. However, use of differing behavioral tasks has resulted in lack of agreement on risky decision-making within psychosis-spectrum disorders, as findings fail to converge upon the typical, binary conceptualization of increased risk-seeking or risk-aversion. The current review synthesizes the behavioral, risky decision-making literature to elucidate how specific task parameters may contribute to differences in task performance, and their associations with psychosis symptomatology and cognitive functioning. A paring of the literature suggests that: 1) Explicit risk-taking may be characterized by risk imperception, evidenced by less discrimination between choices of varying degrees of risk, potentially secondary to cognitive deficits. 2) Ambiguous risk-taking findings are inconclusive with few published studies. 3) Uncertain risk-taking findings, consistently interpreted as more risk-averse, have not parsed risk attitudes from confounding processes that may impact decision-making (e.g. risk imperception, reward processing, motivation). Thus, overgeneralized interpretations of task-specific risk-seeking/aversion should be curtailed, as they may fail to appropriately characterize decision-making phenomena. Future research in psychosis-spectrum disorders would benefit from empirically isolating contributions of specific processes during risky decision-making, including the newly hypothesized risk imperception.