The Relationship Between Negative Affect, State Mindfulness, and the Role of Personality.

Objectives: Are affective states influencing state mindfulness and can this explain the link between personality and mindfulness? Mindfulness is commonly thought to decrease negative affect, but a number of studies have reported reductions in mindfulness in negative affect situations. This highlights a potential mechanism explaining previously observed negative relationships between individual differences such as Neuroticism and mindfulness, via their shared relationship with negative affect. Methods: In an experiment, 331 participants were exposed to a negative affect stimulus to investigate whether previously established relationships between Neuroticism, Behavioral Inhibition, and Mindfulness are due to differences in negative affect reactivity. It was expected that participants high on Neuroticism and Behavioral Inhibition to show greater negative affect reactivity which in turn would reduce their state Non-Judgmental Acceptance and Acting with Awareness. Results: While change in negative affect was related to lower Non-Judgmental Acceptance and Acting with Awareness, negative affect reactivity did not mediate the relationship between Neuroticism/BIS and these state mindfulness facets. Importantly, only Non-Judgmental Acceptance and Acting with Awareness facets of mindfulness were affected by negative affect change, but not Attention. This indicates that greater negative affect might require allocation of cognitive resources to stress-related processes such as threat monitoring, reducing mindful emotion processing but not attention. Conclusions: The current study found that situational mindfulness might be influenced by state affect highlighting the need to more strongly consider the environmental factors which can shape affect in mindfulness interventions. Trial Registration: Open Science Framework (https://osf.io/kmyh2).