The commercial case for manufacturer CPD rests on one assumption: that a session, once delivered, moves toward a specification. Almost every manufacturer measures the only part of that chain that’s easy to count — attendance — and treats it as a proxy for the part that actually matters commercially. The two are not the same thing, and the gap between them is where most CPD spend quietly stops producing value without anyone noticing.
What a CPD session actually creates.
A well-delivered CPD session doesn’t produce a specification decision. It produces familiarity and, if the content is good, a preference — the attending professional now knows the product exists, understands roughly where it fits, and has some reason to think well of it relative to alternatives. That’s a real and useful outcome. It is also several steps removed from a product appearing in a specification schedule.
The steps between attendance and specification.
For a CPD-generated preference to become a specification, four things need to happen, in sequence, none of which the CPD session controls. First, a relevant project has to arise — one where this product category is actually needed, which may be months after the session or may never happen at all for a given attendee. Second, the specification decision for that category has to sit within the attending professional’s authority — plenty of CPD attendees influence specification without holding final sign-off, and plenty attend sessions for categories outside their usual scope entirely. Third, the preference has to survive contact with the other inputs into a real specification decision: cost, client preference, an incumbent relationship the practice already has with a different supplier, or a structural engineer’s requirement that overrides an architect’s product preference. Fourth — and this is the part that’s easy to forget — the professional has to remember the CPD-generated preference at the point the decision actually gets made, which might be a year after the session, when the memory of who presented what has faded into a vague sense of “there’s a product for this, I think.”
Why this makes attendance the wrong measurement.
None of these four steps are visible in an attendance record. A manufacturer who tracks sign-in sheets knows exactly how many people sat through the session and nothing about how many of them later had a relevant project, held the authority to act on it, retained the preference against competing pressures, or actually specified the product. Two sessions with identical attendance figures can have completely different downstream specification outcomes, and attendance data will never show the difference — because the difference happens entirely in the months after the session, in a part of the process attendance was never designed to capture.
What would actually predict specification influence.
The variable that matters is not whether someone attended, but what they intended to do differently as a result. A professional who leaves a session with a specific intention — “I’ll consider this for the next relevant brief,” “I need to check compatibility with our standard detail,” “I’m changing my default spec on this” — has crossed the threshold from passive attendance into active preference formation. That intention is the leading indicator that sits between the session and the eventual specification decision. It’s measurable at the point the session ends, months before the specification decision itself, and it’s the closest available signal to what a manufacturer actually wants to know: not “did they show up,” but “did this change what they’re likely to do.”
What this means for how CPD is evaluated.
None of this is an argument that manufacturer CPD doesn’t work. It’s an argument that the measurement most manufacturers currently rely on can’t distinguish CPD that works from CPD that doesn’t, because it stops at the one step in the process that was never the commercial objective. A session that produces genuine specification-change intent in a meaningful proportion of attendees is doing its job, even if the eventual specification decisions land months later and are shaped by factors well outside the session’s control. A session that produces polite attendance and nothing else is not doing its job, no matter how good the sign-in sheet looks. The distinction only becomes visible once something other than attendance is being measured.
FAQs
Not directly, and not predictably from attendance data alone. Between attending a session and a product being specified, several things have to happen: a relevant project has to arise, the specification decision has to sit within the attendee’s authority, the CPD-generated preference has to survive competing factors like cost and client preference, and the professional has to still remember the preference when the decision is actually made. None of these steps are visible in an attendance record.
Attendance is the easiest part of the process to count, and until recently there was no practical way to measure the parts that actually matter — what attendees intended to do differently after the session. Attendance became the default proxy not because it was the right measurement, but because it was the only one available.
Whether attendees leave a session with a specific intention to change their specification practice — considering the product for a future brief, checking compatibility with a standard detail, or changing a default spec. That intention is measurable immediately after the session, long before any eventual specification decision, and it’s a closer proxy for commercial impact than a sign-in sheet.
“The signal that predicts specification influence. See what it shows for CPD in your category.”
