Why the question matters commercially
Disclosure is required in the markets most advertisers care about. But the belief that it destroys performance is doing real work in the industry — it is the unstated reason a lot of labelling is minimal, buried, or absent.
So the empirical question is worth settling properly, not because the answer changes the obligation, but because a bad guess is currently driving people into non-compliance.
What a clean test requires
Identical creative differing only in the presence and treatment of the disclosure. Sufficient spend per arm for the platform to deliver a readable result. The same audience and placement. Consistent measurement windows. Pre-registered expectations so the reading is not retrofitted.
Most circulating claims fail several of these, which is why the same question keeps being asked.
The variable nobody isolates
Disclosure is not one treatment. A grudging line of minimum-size grey text and a designed, legible label integrated into the piece are different stimuli, and plausibly produce different responses.
Our expectation — stated as a hypothesis, not a finding — is that treatment matters more than presence: that a well-designed disclosure costs little and a furtive one costs more than being absent would, because it reads as evasion. That is exactly the kind of belief that should be tested rather than asserted.
What we are running
Quantivo's creative benchmark includes disclosure treatment as a measured variable on our own products, where we control the spend, the creative and the reporting.
We will publish the method, the sample, the limitations and the result — including if the result is unwelcome. A benchmark that can only produce a convenient answer is advertising.