Abstract / Summary
Abstract Background and Objective: Perseverative negative thinking (PNT), such as worry and rumination, serves as a core transdiagnostic driver for emotional disorders ( Wells & Matthews, 1994 ) . Grounded in the Self-Regulatory Executive Function (S-REF) model, this systematic review investigates the cognitive mechanisms through which initial intolerance of uncertainty or "suspicion" precipitates irrational fear, subsequently escalating into generalized anxiety and major depressive disorder ( Wells, 2009 ) . Specifically, we examine the paradox where individuals under emotional distress evaluate subjective, false threats as objective and highly valuable realities—leading to persistent threat monitoring and repetitive negative processing until a logical, reality-based resolution is achieved.
Methods: A systematic literature search was conducted across international databases including PubMed, Scopus, Web of Science, and PsycINFO in accordance with the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Studies evaluating the relationships between metacognitive beliefs, threat monitoring, anxiety/depression trajectories, and cognitive distortions related to false-threat validation were included.
Results: Synthesized data from empirical studies demonstrate a consistent developmental pathway: chronic suspicion or ambiguity triggers acute fear, which activates the Cognitive Attentional Syndrome (CAS) ( Wells & Matthews, 1994 ) . During heightened emotional states, individuals display profound attention bias, treating unvalidated negative thoughts as highly significant or "valuable" signals rather than temporary mental events. This phenomenon, driven by positive and negative metacognitive beliefs, locks the thinker in a loop of perseverative thinking due to the failure to retrieve data-driven, reality-focused feedback. Prolonged failure to find a logical resolution systematically depletes cognitive resources, driving the transition from chronic anxiety to learned helplessness and depression ( Sun et al., 2025).
Conclusion: The findings validate that individuals remain trapped in maladaptive thinking cycles not because of the thoughts themselves, but due to metacognitive overvaluation of false fears and persistent threat monitoring. Interventions utilizing Metacognitive Therapy (MCT) techniques, such as detached mindfulness and attention training, are critical to helping patients recognize the emptiness of false fears, dismantle threat monitoring, and achieve cognitive flexibility ( Nordahl et al., 2018).