ArticleNeurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology2025
A new instrument for the assessment of laterality: evidence from confirmatory analysis.
Article in Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Despite its importance, the assessment of laterality in scientific and clinical contexts remains inconsistent. Many studies rely on self-reports or outdated questionnaires (in terms of daily-related actions), often neglecting lateralization of the lower limbs, eyes, and ears without considering the four effectors at the same time. To address these limitations, we developed the Florence Laterality Inventory (FLI), a 16-item scale designed to provide a comprehensive assessment of hand, foot/leg, eye, and ear preference through more contemporary and relevant questions. Our study, conducted with 225 participants, confirmed a four-factor structure through confirmatory factor analysis (CFA), demonstrating good reliability for the hand, eye, and ear subscales and, to a lesser extent, also for foot/leg. Correlations with established measures of laterality and handedness supported the concurrent validity of the scale. The FLI scale offers an updated multidimensional instrument to measure lateralization, addressing the shortcomings of previous questionnaires and adapting to modern contexts.
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