Paranoia Through an Evolutionary Lens: A Protective Mechanism under Exposure to Threats
Abstract
Paranoia is commonly linked to psychiatric disorders, yet evolutionary psychology views suggest it may be an adaptive trait for survival in high-threat environments. This study divided 200 participants into high and low groups and used fMRI to test their neural responses to prehistoric threat or neutral stimuli. The results show that when the high-paranoia group was faced with threats, their amygdala and anterior cingulate cortex were much more active. These findings support the evolutionary role of paranoia, demonstrating it is not merely a pathological construct, and highlight its adaptive significance in uncertain contexts. Nonetheless, this detection mechanism seems maladaptive in the current low-threat society. Ultimately, this study may reframe paranoia as an evolutionary protective mechanism.
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