ISO 8586 assessor types
Naive, Initiated, Selected, and Expert: what each level means and how it's earned.
What it is
The ISO 8586 standard classifies sensory tasters by their calibration level. AreaCacao implements four levels and recalculates each panelist's level automatically from their test history.
The level is computed over a rolling window of the last 6 months: what counts is what the panelist has demonstrated recently, not their entire history.
Naive
- Who they are: a person with no passed basic taste test. This is the default level when you register them.
- What it's for: affective (hedonic) tastings with real consumers. Not recommended for serious descriptive or discriminative tests.
- How to move up: pass a basic taste recognition test (see Basic taste recognition).
Initiated
- Who they are: a panelist with at least one passed basic taste recognition test.
- What it's for: first descriptive tastings and introduction to the panel's vocabulary.
- How to move up: complete at least 3 threshold detection tests measured in the last 6 months.
Selected
- Who they are: an Initiated panelist who has also completed 3 or more threshold tests in the last 6 months.
- What it's for: most professional tastings (descriptive, routine discriminative, fine-tuned hedonic).
- How to move up: revalidate basic taste recognition within the last 6 months.
Expert
- Who they are: a Selected panelist who also has a basic taste test revalidated in the last 6 months.
- What it's for: any tasting, including those that make up the technical dossier for a demanding B2B client or a regulatory audit.
- How to maintain it: keep both thresholds and basic taste recognition up to date. Because the calculation uses the 6-month rolling window, letting a revalidation lapse makes the panelist drop a level on its own (see Revalidation and demotion).
The passing threshold for the basic taste test (how many hits out of the total) is set by the lead when creating the training tasting; it's not a fixed percentage. The sensory literature recommends requiring 5 out of 6.
Where the level is shown
The calibration level is shown in the panelist detail, in the Panelist calibration section (the only visible heading, with the type badge beside it): it displays the type badge (Naive, Initiated, Selected, or Expert) along with its reasoning, and below it, with no heading of its own, the table of every test taken. Its columns are Date, Test (Basic tastes or Thresholds 3-AFC), Compound/Detail, and Result. The Result column shows the test value followed by the Passed / Not passed badge: for basic tastes, the hits out of the total and their percentage (for example, 5/6 (83%)); for thresholds, the BET (Best Estimate Threshold) in g/L (for example, BET 1.250 g/L).
Why it matters
- Compliance. Technical dossiers signed off with an Expert panel are defensible in a B2B audit.
- Statistical validity. Discriminative tests require a minimum number of Selected panelists.
- Internal confidence. Knowing who contributes high confidence to the result and who is more noise.