← Every exhibit
What are the construct, domain, indicator, and observation?
| Object | What it is | Example question | Failure when it is merged |
|---|---|---|---|
| Construct or target quantity | The concept or quantity a decision is about | What do we mean by customer value, productivity, or forecast confidence? | A familiar label is treated as a definition |
| Construct domain | The attributes or facets the definition includes and excludes | Does customer value include use, completed work, outcome, or all three? | The indicator covers one convenient facet and is called complete |
| Indicator | The observable variable, event, response, or record used as a measure | Which logged action or field stands in for the target? | A proxy is treated as the underlying construct |
| Observation | The value actually recorded at a unit, time, and version | What did the system record, when, and under which rule? | Recording noise, stale state, and missingness disappear |
| Validation evidence | An independent check of the interpretation or error mechanism | What second measure, repeated observation, or criterion can challenge the indicator? | One column is asked to prove its own accuracy |
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Reference & Evidence
Source: Table from this essay. Sources and interpretation are given in the article.
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