[The Spanish version of two olfactory scales: reliability and validity]

Area of Science:

• Psychology
• Neuroscience
• Sensory Science

Context:

• Smell significantly influences behavior, cognition, and emotions.
• Accurate measurement tools are crucial for understanding olfactory perception.
• Existing scales required validation for the Spanish-speaking population.

Purpose:

• Translate and validate the Spanish versions of the Affective Impact of Odors scale (AIO) and the Odor Awareness Scale (OAS).
• Assess the psychometric properties of the translated scales, including reliability and validity.

Summary:

• The study involved 100 participants from the general population.
• Internal consistency was evaluated using Cronbach's alpha, and test-retest reliability was assessed via the intraclass correlation coefficient (ICC).
• Convergent validity was confirmed through correlations with external olfactory measures and the relationship between AIO and OAS.

Impact:

• The Spanish AIO and OAS demonstrated good internal consistency (Cronbach's alpha: 0.727 and 0.906, respectively) and high test-retest reliability (ICC: 0.780 and 0.895).
• Convergent validity was satisfactory, and factor analysis supported a one-factor structure for both scales.
• The validated Spanish AIO and OAS are suitable instruments for assessing olfactory function in Spanish general populations.