What you can and cannot attribute to an event
After the event, a member joined, a partner signed a memorandum, and enquiries rose, and the board asks whether the event did that.
The short answer
Attribution is the claim that the event caused an outcome. Most of the time you can honestly say only that the outcome followed the event, or that the event may have contributed, because other things were happening too. Grade each claim as observed, contributed to, coincided with, or unknown, and write it in matching words.
Attendance and satisfaction show the event was delivered and received. They are not evidence that any later outcome was caused by it.
Four grades for any outcome claim
| Grade | What you can say | Evidence needed |
|---|---|---|
| Observed result | This happened at or directly because of the event. | A record created by the event, such as a signed agreement at the venue. |
| Contributed to | The event was one of several influences. | The person or party says so, in their words. |
| Coincided with | It happened afterwards, with no link shown. | Timing only. |
| Unknown | You cannot tell. | None. Say so. |
Why attribution is hard to prove
- Other activities, such as a campaign, a policy change or a season, happened at the same time.
- People who already planned to join are more likely to attend, so attendance may follow intent.
- Self-reported reasons are useful but can be shaped by what is socially welcome.
- The comparison you need, what would have happened without the event, is usually missing.
A sequence for grading claims
- List every outcome the committee wants to claim, in plain words.
- For each, ask what else was happening and who else could have caused it.
- Look for evidence that links the outcome to the event, such as the person's own account or a record made at the event.
- Grade the claim and choose matching words, using the table above.
- Record the grade in the benefit evidence tracker and carry the wording into the executive summary.
Wording that matches the grade
| Grade | Honest wording | Wording to avoid |
|---|---|---|
| Observed result | The memorandum was signed at the closing session. | The event delivered a new partnership. |
| Contributed to | Three new members said the forum was one reason they joined. | The forum grew membership. |
| Coincided with | Enquiries rose in the month after the forum. | The forum increased enquiries. |
| Unknown | We did not measure whether practice changed. | Delegates improved their practice. |
What you can do better next time
- Ask new members, partners and enquirers how they heard of you, at the point of joining or enquiring.
- Record a baseline before the event for any outcome you intend to claim. See objectives-to-evidence map.
- Where comparison is possible, such as members who did and did not attend, state the limits of that comparison.
- Ask the people who matter, for example stakeholders, what they would credit.
Worked example · Fictional example
Claims after a trade association's annual forum
Fictional organisation and figures, written to show how claims are graded.
Persatuan Fiktif Pembekal Perkhidmatan Industri lists four things the committee wants to claim after its forum: a memorandum signed at the event, six new members in the following month, a rise in enquiries, and better member awareness of a new rule.
The memorandum has a signed record, so it is an observed result. For the six new members, the secretariat asks them, and four say the forum was one of their reasons, so it writes contributed to, with the number. The rise in enquiries has timing only, and awareness was never measured. The report claims what the evidence supports and lists the rest as limits.
| Claim | Evidence | Grade | Wording used |
|---|---|---|---|
| Memorandum signed | Signed document dated at the forum | Observed result | Signed at the closing session |
| Six new members | Four of six cite the forum | Contributed to | Four of six new members named the forum as one reason |
| Rise in enquiries | Timing only | Coincided with | Enquiries rose in the following month |
| Awareness of new rule | Not measured | Unknown | Not measured |
Use this yourself
Outcome claim grading worksheet
Copy into a spreadsheet and add one row for each outcome the committee wants to claim.
- Claims dropped because evidence was missing:
- Evidence to collect next time, and who will collect it:
- Where the grades are stored for the next edition:
| Outcome claimed | Other things happening | Evidence linking it to the event | Grade | Wording for the report | Owner |
|---|---|---|---|---|---|
Handle it in-house, or bring in help?
Your team can usually handle this when
- The outcomes are few, and you have records or accounts that link them to the event.
- The report is for committee learning and wording can stay cautious.
- You can ask the people involved directly.
Outside planning help earns its fee when
- The board, a funder or a sponsor expects the event to be credited with results.
- Several parties claim the same outcome and the evidence is split between them.
- The event is repeated and a consistent method of grading claims is needed.
Want a consistent way to report results?
If the committee keeps being asked what the event achieved, recurring programme management can set the claim grades, evidence owners and report wording once and apply them across editions. A conference project lead can do the same for a single event. What is claimed, and the conclusions drawn, stay with your organisation.
Questions organisers ask
Can we say the event led to new members?
Only if you have evidence, such as members saying so. Even then, say contributed to, with the number of people who said it, rather than led to.
Is a satisfaction score evidence of impact?
No. It shows how people felt about the event. Impact needs evidence about what changed afterwards, and the link to the event.
Should we drop a claim it cannot prove?
Report what you observed, say what you could not measure, and avoid implying a link. An honest not measured is more credible than a stretched claim.
Related resources
Content record: Draft. Written from the cited sources and checked by automated rules; not yet independently reviewed.