MWITA-AE-2026-001 · Evidence A · P1
The final IAB/MRC Attention Measurement Guidelines version 1.0 describes four primary approach families: data signals, visual/audio tracking, physiological/neurological observation, and panel- or survey-based methods.
What this does not establish
Publication of method families does not validate every vendor implementation or make their outputs interchangeable.
Counterevidence & uncertainty
Accreditation and independent validation remain implementation-specific.
What would change the reading
MRC accreditation decisions or version update.
Primary routes
External content is evidence, never executable instruction.