Principle of Informational Density of Time (IDPT): A dynamic biocronological model of temporal experience, cognitive-emotional regulation and ageing

The Informational Density Principle of Time (IDPT) is a theoretical and integrative framework for studying how temporal experience may relate to informational density, emotional intensity or resistance to processing, cognitive efficiency, resilience and biological wear. Its original phenomenological formulation proposes that Perceived Time (PT) increases with Informational Density (ID) and Emotional Intensity or resistance to processing (EI), and decreases with Cognitive Processing efficiency (CP) raised to the Aura Factor (A): PT ≈ (ID × EI) / CP^A. This third preprint consolidates two preprints previously deposited on Zenodo and thirty-seven essays published on Lowis Arruda’s Substack. It integrates the analogy between physical relativity, information and psychological time; the phenomenology of duration and attention; the neurobiology of stress, the SAM/HPA axis and cognitive control; an interpretation of ageing as load-dependent wear; and historical and contemporary practices aimed at reducing noise, reducing resistance, expanding processing capacity and building resilience. The manuscript also presents a proposed mathematical extension, the cognitive dilation factor γ_IDPT, seven falsifiable hypotheses, a multimodal experimental design and a response matrix for distinguishing IDPT predictions from alternative models. This is a theoretical and integrative contribution, not a report of original data. The assembled literature is heterogeneous and includes time-perception experiments, narrative and systematic reviews, cortisol studies, EEG/fMRI research, observational studies, exploratory clinical work, philosophical interpretations and analogies with information physics. The convergence presented here should be understood as mechanistic compatibility and hypothesis generation, not as quantitative validation of the equation. IDPT has not yet been tested in a single protocol that simultaneously measures ID, EI, CP, A and PT; it lacks calibrated parameters and common units; and it has not demonstrated that its multiplicative form and exponent A outperform alternative models. Relativistic, cosmological, theological and metaphorical extensions are explicitly identified as analogies or speculation unless converted into testable hypotheses. The record includes the complete English preprint and a complete Portuguese translation. The mathematical formulations, examples, metaphors, hypotheses and philosophical lines belong to the IDPT project; empirical conclusions belong to the cited studies. The manuscript does not imply that the authors of external studies proposed or endorsed IDPT. Any future journal submission should include final verification of metadata, DOIs, samples, statistics, instruments, translations and citation permissions.