The main contribution of this work is the conceptual framework. The accompanying pilot suite is included not as a validated instrument, but as an initial operational prototype showing that the framework can be translated into testable behavioural tasks and subjected to future empirical challenge.

The IDD_SUITE_v1 is a browser-based testing instrument that implements the D_I = I_m / I_h ratio and the seven tests described in the companion IDD paper 10.5281/zenodo.19350445. It measures how information density (I_m) relative to human integration capacity (I_h) affects decision-making across e-commerce, trading, social media, checkout, short-form video, friction intervention, and motor inhibition tasks.

The suite runs entirely in the browser, offline, with no server-side processing. Zero PII is collected. Participants are identified only by randomly generated session IDs. All data is anonymised by design. The suite is released under CC BY-NC 4.0 — non-commercial, open for use, adaptation, and contribution.

This document describes the instrument design, the seven tests, the I_h calibration procedure, the D_I computation method, NASA-TLX implementation, and the CSV output format.

Zero PII Commitment

The IDD_SUITE_v1 adheres to a zero PII principle: no names, emails, or identifiers are collected; no IP addresses are logged; no demographic data is requested or stored; participant IDs are randomly generated per session and not retained; all data is anonymised by design. This is non-negotiable. The purpose is to study structural patterns, not individuals.