---
title: Self-Reported Data in Win/Loss
canonical: "https://winlossresearch.com/glossary/self-reported-data/"
description: "Self-reported data is any account of a deal's outcome given by a participant describing their own actions or experience."
---

# Self-Reported Data

Self-reported data is information about a deal's outcome that comes directly from a participant describing their own actions, observations, or experience. A rep logging a CRM loss reason is producing self-reported data. So is a buyer answering a survey question or speaking with an interviewer. The term doesn't distinguish good data from bad data. It distinguishes data shaped by a single person's perspective from data verified independently of that perspective.

Every method used in win/loss work, internal and independent alike, ultimately runs on self-reported data of some kind. There is no objective sensor recording why a buyer chose a competitor. What exists instead is an account, filtered through that person's memory, incentives, and willingness to share. The question that matters isn't whether the data is self-reported. It's whose self-report is being collected, and under what conditions.

This is where internal and independent win/loss methods diverge sharply. CRM loss reasons and rep debriefs are self-reported by the rep, someone with a direct stake in how the loss gets explained and a limited view of what happened on the buyer's side. The buyer's own self-report, gathered in a structured win/loss interview, comes from the person who actually made the decision, but it's still shaped by what that buyer is willing to disclose and to whom.

A buyer talking to the vendor's account team self-reports differently than the same buyer talking to a neutral third-party researcher. The relationship being managed changes what gets said, even though both conversations produce self-reported data about the identical decision.

Treating "self-reported" as a single category obscures this distinction. The practical question for any win/loss program is not whether the data is self-reported, but which self-report is closest to the source of the decision and least distorted by the relationship between the person speaking and the person listening.

## Related Terms

- [CRM loss reason](/glossary/crm-loss-reason/)
- [Rep debrief](/glossary/rep-debrief/)
- [Buyer truth](/glossary/buyer-truth/)

## See Also

- [Why Internal Win/Loss Data Fails](/topics/why-internal-win-loss-data-fails/)
- [Why don't buyers tell vendors the real reason they lost?](/faq/why-dont-buyers-give-honest-feedback-to-vendors/)
- [Why do buyers go quiet instead of giving honest feedback?](/faq/why-buyers-go-quiet/)