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In the European Test of Olfactory Capabilities (ETOC), odorants were selected so as to reduce cultural differences in familiarity across countries [7, 22].

The importance of language in odor perception is well known [23], and a requisite of identification tests is to help identification by providing participants with several names in a forced-choice paradigm [16].

Smell is a key to our relationship to food, approach/avoidance behavior, and alarm response to dangerous chemicals [1].

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Thus, the different commercially available tests do not specifically measure the same olfactory competencies, but all are designed to detect hyposmia or anosmia.

With hyposmia being operationally described as an impairment of both sensitivity and quality perception [12], we wanted a clinical test that would measure both.

Closer examination of these semantic cues shows that the choice of appropriate labels is a decisive factor in successful identification [24].

Thus, a second prerequisite for our clinical test was the ecological validity of the odorants and of their names for a French population.

Each addresses different competencies: whereas sensitivity reflects perceptual processes that do not strongly depend on language abilities, identification relies on language and culture.

Cultural variation conditions odor identification, which is based on learning of odors that have become familiar and “ecologically valid” [16]; such familiarity varies from country to country [17–19], as does stimulus typicality for a given target odor [20]. [21], for example, to modify the American UPSIT test for use in Asia and Europe.Like everything framework related, the Validator tries to provide an API that will work in a number of validation scenarios.I recommend you bend it to your will and build something that makes it easy to use inside your specific design and architecture.In recent decades, several olfactory tests were designed in various countries (see [7]).Some measured identification only [8–10], some sensitivity only [11], others combined both [7, 12–15], and one added a discrimination measurement [14].Incidence of smell deficit was estimated at 5.6% in the healthy population of study 1, and at 16% in the elderly control group of study 2.

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