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<p>This study introduces the En-ADT model, a novel psychological framework for quantifying existential sustainability through structural predictors. The model combines the Equation of Enough (En), composed of five dimensions, Effective Stress, Effective Success, Temporal Distribution, Contextual Relevance, and Narrative Simulation, with the Actualization Death Threshold (ADT), a scale capturing the lower and upper bound of mental sustainability. In Phase 1 (<i>N</i> = 44, males- 45.5% and females = 54.5%, 18–22 = 56.8%, Greeks = 68.2%), the ADT scale was validated as a separate construct. In Phase 2 (<i>N</i> = 250, males = 57.2% and females = 42%) through a diverse sample of ages (18–22 = 27.2%, 23–29 = 18.8%, 30–44 = 27.6%, 45 + 26.4%) and nationalities (Greek = 36%, American =26.4%, Russian = 7.2%, other = 30.4%) the Equation of Enough (α = 0.959) (Se = α = 0.863, Ss <i>α</i> = 0.795, Td <i>α</i> = 0.873, Cr <i>α</i> = 0.874, Ns <i>α</i> = 0.899) significantly predicted ADT (<i>α</i> = 0.907) scores. The five-factor confirmatory factor analysis indicated: χ²(692) = 1560.833, <i>p</i> &lt; 0.001; CFI = 0.933; TLI = 0.929; RMSEA = 0.071, 90% CI [0.066, 0.076]; SRMR = 0.072. All standardized loadings significant, <i>p</i> &lt; 0.001, range = 0.66–0.96, with generally strong item explained variance (R²); convergent validity supported via AVE for Se = 0.515, Td = 0.544, Cr = 0.516, Ns = 0.616, with Ss AVE = 0.439; factor covariances = 0.253–0.466, all <i>p</i> &lt; 0.001, indicating substantial but non-redundant inter-factor associations. The model explained 79 percent of the variance (<i>R</i>² = 0.790, f² = 3.76), while the composite score showed similar predictive power (<i>R</i>² = 0.770, f² = 3.35). Both models showed large effects, with post hoc power analyses indicating power &gt;0.999 (f² &gt; 3.3; G*Power 3.1). These findings position the En-ADT model as a novel structurally grounded, high-precision method for predictive existential modeling.</p>

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The equation of enough and the actualization death threshold: preliminary validation of a structural model of existential sustainability and collapse

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  • 发表日期：

    2026年6月17日

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  • Antonis Chatzipanagiotou

摘要

This study introduces the En-ADT model, a novel psychological framework for quantifying existential sustainability through structural predictors. The model combines the Equation of Enough (En), composed of five dimensions, Effective Stress, Effective Success, Temporal Distribution, Contextual Relevance, and Narrative Simulation, with the Actualization Death Threshold (ADT), a scale capturing the lower and upper bound of mental sustainability. In Phase 1 (N = 44, males- 45.5% and females = 54.5%, 18–22 = 56.8%, Greeks = 68.2%), the ADT scale was validated as a separate construct. In Phase 2 (N = 250, males = 57.2% and females = 42%) through a diverse sample of ages (18–22 = 27.2%, 23–29 = 18.8%, 30–44 = 27.6%, 45 + 26.4%) and nationalities (Greek = 36%, American =26.4%, Russian = 7.2%, other = 30.4%) the Equation of Enough (α = 0.959) (Se = α = 0.863, Ss α = 0.795, Td α = 0.873, Cr α = 0.874, Ns α = 0.899) significantly predicted ADT (α = 0.907) scores. The five-factor confirmatory factor analysis indicated: χ²(692) = 1560.833, p < 0.001; CFI = 0.933; TLI = 0.929; RMSEA = 0.071, 90% CI [0.066, 0.076]; SRMR = 0.072. All standardized loadings significant, p < 0.001, range = 0.66–0.96, with generally strong item explained variance (R²); convergent validity supported via AVE for Se = 0.515, Td = 0.544, Cr = 0.516, Ns = 0.616, with Ss AVE = 0.439; factor covariances = 0.253–0.466, all p < 0.001, indicating substantial but non-redundant inter-factor associations. The model explained 79 percent of the variance (R² = 0.790, f² = 3.76), while the composite score showed similar predictive power (R² = 0.770, f² = 3.35). Both models showed large effects, with post hoc power analyses indicating power >0.999 (f² > 3.3; G*Power 3.1). These findings position the En-ADT model as a novel structurally grounded, high-precision method for predictive existential modeling.