Why Some People Do Not Develop PTSD:  A Load Minimization Theory Analysis of Cognitive Processing Styles and the Expansion of the Controllable Domain

This paper explores why certain individuals exposed to significant trauma do not develop post-traumatic stress disorder (PTSD), using Load Minimization Theory (LMT) as the primary framework. Building upon the previous analyses of narcissistic patterns and protective strategies for their partners and family members, the present work focuses on individual differences in cognitive processing styles as a key factor in trauma response. Particularly, the author examines Aphantasia(or Aphantasia-like cognitive styles) — characterized by a limited ability to generate sensory mental imagery — as one protective factor. Individuals with this style tend to process experiences primarily through linguistic, conceptual, and structural means rather than vivid sensory replay. Within LMT, this cognitive orientation facilitates more effective respectful re-tagging (ℛ), maintains a wider Controllable Domain between automatic reactivity and intentional response, and reduces the likelihood of overwhelming sensory-based flashbacks and boundary friction (F). To support self-understanding, the paper introduces the Seaside Test(海辺テスト), a simple screening tool for identifying one’s dominant cognitive processing style (sensory-visual dominant, auditory, or abstract-structural). This tool helps readers recognize their own patterns and select more suitable strategies for expanding their Controllable Domain. The analysis suggests that PTSD vulnerability is not uniform but is significantly influenced by how individuals naturally handle uncertainty (U), boundary friction (F), and energy cost (E) after traumatic events. By understanding these cognitive differences, it becomes possible to develop more personalized approaches to trauma prevention and recovery. The paper concludes by laying the theoretical foundation for a future clinical protocol (CDEP-P) tailored to diverse cognitive processing styles.