Are paranoid ideation and hallucination spectrum experiences differently associated with affect dynamics? A...

Area of Science:

• Psychology
• Psychiatry
• Computational Neuroscience

Background:

• Psychotic experiences are linked to emotional functioning disruptions, specifically in affect dynamics.
• The distinct roles of paranoid ideation and hallucination experiences in affect dynamics remain unclear, especially when controlling for depression.

Purpose of the Study:

• To investigate differential associations between paranoid ideation and hallucination experiences with affect dynamics.
• To examine if these associations persist after statistically controlling for depressive symptoms.

Main Methods:

• Utilized a novel hierarchical Ornstein-Uhlenbeck (OU) process model, a continuous-time stochastic differential equations model within a Bayesian framework.
• Assessed affective valence and arousal 10 times daily for 7 days in a community sample (n=116) using the experience-sampling method.
• Modeled affect dynamics using three parameters: attractor point, variability, and attractor strength.

Main Results:

• Found credible associations between paranoid ideation and negative valence/high arousal attractor points, controlling for depression.
• Identified a credible positive association between hallucination experiences and arousal variability.
• Observed limited evidence for associations between paranoid ideation and valence variability/attractor strength, and hallucination experiences and arousal attractor points.

Conclusions:

• The OU model reveals distinct affective profiles for paranoid ideation and hallucination experiences.
• These different affect dynamics suggest unique mechanisms underlying the formation and maintenance of these psychosis symptom dimensions.