Selected aspects of eye dominance and its relation to motor laterality manifestation at children population
Abstract
The aim of this study is to shed light on the relationship between upper limb preference and two different factors assessing ocular dominance in the population of children aged 8 to 10 years. It focuses on the sighting factor, which is manifested in the ocular preference in monocular activity, and on the binocular rivalry factor, which determines the dominant eye in spatial orientation.
The upper limb preference of 204 children was determined using five motor tasks whose diagnostic quality and compliance with the "Upper Limb Preference" dimension was verified by the structural equation modelling method. Results of tetrachoric and polychoric correlation matrices showed at p < 0.001 a significant relationship between upper limb preference and ocular dominance, determined by the spatial orientation indicator (binocular rivalry factor).
Subsequently, at p < 0.05, statistically significant differences in the correlation coefficients between the motor tasks assessing upper limb preference and each of the two factors determining ocular dominance were confirmed. These facts suggest that the correct positioning of the object in the given space when handling the object by the upper limb is more important than focusing on the object.