Credence Good

Why the credence good problem matters for coaching

Coaching and mentoring are textbook credence goods. A client pays for advice, then their business changes for many reasons at once, so they cannot cleanly tell how much the coaching contributed. This uncertainty has a direct commercial cost: it is a leading reason clients quit around month two and a reason mentors struggle to defend their fee at renewal. When value cannot be verified, doubt fills the gap, and doubt does not renew.

The way out is to move the service from credence towards evidence. If you can show a baseline, a tracked change, and a plausible link to the work you did, the client no longer has to take the value on faith. That shift is the whole reason coaching ROI reporting exists.

How to turn a credence good into an evidence good

The practical move is to attach observable numbers to invisible work. Take a baseline of the metric the client cares about, agree it up front, then report the change on a regular cadence rather than only at renewal. For a marketing mentor, that means tracking leads, cost per lead, or revenue against the plan agreed in each session. MentPass was built around this single idea: it connects to the client's real marketing data and reports the delta so the value is visible rather than assumed.

Common mistakes with credence goods

• Relying on rapport alone: a good relationship feels like value but does not prove it, and rapport fades faster than a spreadsheet.
• Waiting until renewal to make the case: evidence gathered in a panic reads as a sales pitch, not a record.
• Overclaiming: taking full credit for every gain destroys the credibility that makes the evidence work.
• Measuring the wrong thing: tracking activity, like sessions held, instead of the outcome the client is buying.