What does the main study claim?
Nearly every confident assertion that media presence moves B2B purchasing traces back to one annual piece of research: the B2B Thought Leadership Impact Report produced by Edelman with LinkedIn, reported as being in its seventh edition and drawing on a survey of close to two thousand professionals worldwide.
Its recent findings centre on what it calls hidden buyers — stakeholders who influence a purchase without being the obvious user or the named decision maker. It is reported that 79% of these buyers say they are more likely to advocate for a proposal during an RFP process where the vendor consistently produces high-quality thought leadership.
Two further figures are widely quoted. That 53% say strong content can outweigh brand recognition alone, and that 91% of hidden buyers regard uncovering challenges a company had not recognised as a hallmark of quality thought leadership, against 81% of more visible decision makers. Alongside these sits a process finding: more than 40% of B2B deals stall because of internal misalignment within the buying group.
Taken at face value, this is a coherent and plausible account. Purchases in organisations are decided by groups, people who never speak to a salesperson shape the outcome, and material that reaches them before procurement starts is doing real work.
The hidden-buyer framing is the study's genuine contribution, and it is worth separating from the sales use made of it. Purchases in organisations really are decided by more people than the ones who take the meetings, and marketing aimed only at the named contact really does miss them.
Who produced it, and what do they sell?
A public relations firm and a professional social network, jointly. Edelman is among the largest communications agencies in the world and sells content and reputation programmes. LinkedIn is the platform on which a great deal of business thought leadership is published and promoted, and sells advertising against it.
This does not make the research dishonest, and the study is more carefully constructed than most vendor material in this field. But the conflict is direct rather than incidental: the finding that thought leadership influences buying is a finding that both sponsors' core products are valuable.
This series applies the same treatment consistently. Podcast advertising revenue figures produced by the trade body for podcast advertising, and podcast ad effectiveness research produced by a measurement company selling to advertisers, are reported with the same caveat attached. Interested research is not worthless; it is evidence whose direction of error is predictable.
What would settle the question is independent replication — academic or genuinely disinterested work reaching similar conclusions with published methods. We located none, which is the more serious gap and the reason this report cannot do better than describe the state of the evidence.
None of this is an argument for ignoring interested research. It is an argument for reading it as advocacy with data attached, and for weighting it accordingly against evidence with no stake in the answer.
% of respondents, as reported in trade coverage of the Edelman–LinkedIn study
Source: Edelman and LinkedIn, B2B Thought Leadership Impact Report, as reported in trade coverage.
Figures are reported secondhand: four attempts to retrieve the primary report and its publisher pages returned HTTP 403. Question wording and fielding dates could not be verified, and the research is sponsored by parties selling the activity it endorses.
What do the figures actually measure?
Stated attitudes, gathered by survey, about a category of content the respondent is asked to consider. That is a weaker instrument than the percentages suggest, and the weakness is worth spelling out because it applies to nearly all research of this kind.
People are poor witnesses to what influenced them. A buyer who says they are more likely to advocate for a vendor producing good content is reporting a belief about their own reasoning, not a record of a decision. Attitudinal surveys reliably overstate the influence of things respondents regard as legitimate and understate the influence of things they do not.
The phrasing also invites agreement. Asking whether high-quality thought leadership makes advocacy more likely poses a question few would answer no to, because the quality is built into the premise. Nobody is asked whether mediocre content helps.
None of this means the effect is absent. It means the figures describe what buyers say they value, and the distance between that and what moved a purchase is unmeasured. Reported as a finding about attitudes, the research is sound. Reported as a measurement of commercial effect, it is carrying more weight than its method supports.
Is thought leadership the same as media coverage?
No, and this is the most consequential problem with how the study is used.
Thought leadership, as the research uses the term, means content a company produces and publishes: articles, reports, research, posts. The buyer encounters the company's own thinking, presented as such. The study measures the effect of a company saying something substantial.
Media placement is a different product. A press release is self-description distributed for a fee; a contributed post is self-authored under a masthead; earned coverage is a journalist's independent account. Only the middle case resembles thought leadership at all, and it is the one most often sold at the price of the third.
So a vendor citing this research to justify buying placements is transferring a finding across a boundary it does not cross. If the study is right, what it supports is investing in having something worth saying and publishing it — which a company can do on its own site, at no placement cost. The finding most favourable to the placement industry is, read carefully, an argument for the thing placement is often bought instead of.
What would better evidence look like?
Something closer to a measurement and further from a survey.
Independent research, not funded by parties selling the activity, would be the first improvement. Published methodology — sample frame, question wording, response rates, confidence intervals — would be the second, and we could not obtain those details here even after repeated attempts at the primary source.
Better still would be behavioural evidence rather than stated attitudes: matched comparisons of deals where buying groups encountered a vendor's material against those where they did not, with the obvious confounders controlled. That is difficult and expensive research, which is why nobody has done it, and its absence should temper everyone's confidence rather than only the sceptics'.
Until such work exists, the defensible position is modest. Business buyers plainly read things, and being credible in a field plainly helps a company sell in it. How much, through which channel, and whether purchased coverage contributes at all, remain unmeasured.
A smaller improvement would help immediately: publishing the instrument. Releasing the questionnaire alongside the findings would let readers see how each figure was elicited, and its absence is why percentages this precise cannot be assessed.
What this means for anyone buying placement
Ask what any quoted B2B statistic is a statistic about. Most trace to this one sponsored study, and most are being applied to a product it did not examine.
Distinguish the two purchases clearly. Publishing substantive material of your own is what the research supports, and it is largely free of placement costs. Buying coverage on somebody else's domain is a different transaction with different uses — reach, a citable record, a specific audience — none of which this study measured.
Be sceptical of certainty in this area generally. The evidence base is thin, interested, and attitudinal, and any seller quoting a precise figure for coverage's effect on your pipeline is quoting a number that was not measured on the thing they are selling.
Media Morpheus sells placement. We think business buyers are influenced by encountering credible material about a company, which is a reasonable belief and not a demonstrated one. What we will not do is cite a study about self-published thought leadership as evidence that buying press coverage moves purchasing decisions, because it is not evidence of that.
Methodology and limitations
This report describes the Edelman–LinkedIn B2B Thought Leadership Impact Report as reported in trade coverage. Six limits apply, and they are unusually significant. First, we could not retrieve the primary report: four attempts at the published PDF, the publisher's landing page and two trade articles returned HTTP 403. All figures here are therefore secondhand, and question wording, fielding dates, sample frame and margin of error could not be verified. Second, the research is sponsored by a public relations firm and a social platform, both of which sell the activity the findings endorse. Third, the figures are self-reported attitudes gathered by survey, not observed purchasing behaviour, and attitudinal research of this kind systematically overstates influences respondents regard as legitimate. Fourth, the study concerns thought leadership — content companies publish themselves — and is not evidence about purchased media placement. Fifth, no independent replication was located. Sixth, nothing here should be read as disputing the study's own conclusions within its stated scope; the caution concerns how it is used.
Conclusion
The honest answer is that nobody has measured this well. The single study the industry leans on is sponsored by a PR firm and a platform, reports stated attitudes rather than observed behaviour, could not be retrieved in primary form despite repeated attempts, and — most importantly — examines content companies publish about themselves rather than coverage other people write about them. Its findings are plausible and may well be broadly right. They simply do not establish what they are routinely cited to establish. A company deciding whether coverage moves its buyers should treat the question as open, invest first in having something worth saying, and discount any vendor quoting a percentage as though this were settled.
Frequently Asked Questions
Does media coverage influence B2B purchases?
Plausibly, but it is not well measured. The main cited study examines self-published thought leadership rather than press coverage, reports stated attitudes, and is sponsored by firms selling the activity.
What does the Edelman–LinkedIn study actually find?
As reported, that 79% of hidden buyers are more likely to advocate for vendors producing quality thought leadership, and that 53% say strong content can outweigh brand recognition alone.
Who are 'hidden buyers'?
Stakeholders who influence a purchase without being the obvious end user or named decision maker. The study reports more than 40% of B2B deals stall through internal misalignment in buying groups.
Is thought leadership the same as press coverage?
No. Thought leadership is content a company publishes itself. Press coverage is written by someone else. The study measures the first and is frequently cited to justify buying the second.
Why should I discount the findings?
Not discount — contextualise. The research is sponsored by a PR firm and a platform, measures attitudes rather than behaviour, and has no independent replication we could locate.
What should I invest in instead?
What the research actually supports: having something substantive to say and publishing it. That can be done on your own site without placement costs.
Sources
- vendor research Edelman and LinkedIn. B2B Thought Leadership Impact Report, reported as the seventh annual edition surveying nearly 2,000 global professionals. Figures reported secondhand; primary not retrievable.
- trade press Trade coverage of the Edelman–LinkedIn report, from which the figures in this report are drawn.