MRC and IAB Release Attention Measurement Guidelines — Adelaide Seeks First Accreditation

The attention metrics space just got its most significant dose of legitimacy. In November 2025, the Media Rating Council and the Interactive Advertising Bureau jointly released comprehensive attention measurement guidelines — the first industry-wide framework for how attention should be defined, measured, and validated.

Who Built the Guidelines

The guidelines were developed by a task force operating under IAB's Measurement, Addressability & Data Center. The participant list reads like a who's who of the industry: Amazon Ads, Google, Meta, Nielsen, The Trade Desk, The Walt Disney Company, and Procter & Gamble all had seats at the table, alongside attention technology providers including Adelaide, Lumen Research, and InsurAds.

What the Guidelines Cover

The framework establishes standardized definitions for attention measurement, validation requirements for vendors, and recommended methodologies for incorporating attention signals into media buying.

A key element is the distinction between different tiers of attention — from passive exposure (the ad was in view but no active engagement detected) to active and focused attention, where behavioral or eye-tracking signals confirm genuine viewer engagement.

Adelaide's MRC Review

Perhaps the most consequential development is that Adelaide is now the first attention vendor to undergo MRC accreditation review. If successful, Adelaide's AU (Attention Unit) metric could become the first MRC-accredited attention metric — a credential that would significantly accelerate buyer adoption.

Adelaide's AU metric synthesizes viewability, time-in-view, interaction patterns, and contextual signals into a single normalized score. The metric is built on eye-tracking data from Amplified Intelligence, Lumen, Tobii, and TVision, combined with placement-level signals like ad clutter, position, page speed, and pod position.

The Business Case Is Getting Clearer

Adelaide's 2025 Outcomes Guide, based on a collection of case studies, found that campaigns leveraging AU achieved an average of 41% higher brand lift and 55% stronger lower-funnel impact compared to campaigns optimized on traditional metrics.

Meanwhile, Nielsen and Adelaide announced a partnership to provide the industry's first unified view of reach and media attention — combining Nielsen's audience measurement with Adelaide's attention scores. This integration could make it significantly easier for buyers to incorporate attention into their planning workflows without requiring a separate platform.

What Comes Next

Standardized attention metrics have the potential to fundamentally change how media is bought and sold. As AdExchanger notes, if MRC accredits Adelaide's AU metric, expect to see DSPs and publishers begin offering attention-based buying options more aggressively.

The transition won't be instant — the industry took years to adopt viewability standards after the MRC defined them — but the infrastructure is now in place.