<abstract xmlns="http://www.w3.org/1999/xhtml">

<sec><h3>Objective</h3>
<p>To investigate the reliability (internal consistency) of a Combined Foot and Eye Dominance Scale in healthy subjects.</p>
</sec>
<sec><h3>Materials and methods</h3>
<p>A total of 82 mentally healthy subjects were assessed with a Combined Foot and Eye Dominance Scale. The Foot Dominance Subscale included a modified Chapman &amp; Chapman Foot Dominance scale and a new Complex Tasks scale with four foot tests reflecting more complex tasks. The Eye Dominance Subscale included three eye tests. Scale reliability statistics (item-scale statistics, summary statistics for the items, Cronbach’s alpha), nonparametric Mann-Whitney test and Spearman’s rank correlation coefficient were used.</p>
</sec>
<sec><h3>Results</h3>
<p>Considerable differences were found in the contribution of the single items to the Combined Scale. The means of some items were 37.83 times greater than those of other items (from 0.15 to 5.61), which suggested greater phenogenetic component and consequently greater contribution of these items to the total scale mean. The mean correlation between the items of the Combined Foot and Eye Dominance Scale was strongly positive (0.39), indicating good internal consistency of the scale.</p>
</sec>
<sec><h3>Conclusions</h3>
<p>Eye and foot dominance appear to be a much subtler indicator of altered hemispheric lateralization than hand dominance. The Combined Dominance Scale provides a more adequate tool for objective measuring of leftedness, as a way to assess laterality, since this scale is to a great degree unaffected by socio-cultural impact. The scale would provide comparability of leftedness as an indirect clue of abnormal lateralization in studies of mentally healthy subjects and subjects with neurodevelopmental disorders with presumed abnormal cerebral asymmetry across cultures.</p>
</sec>
</abstract>

Objective
To investigate the reliability (internal consistency) of a Combined Foot and Eye Dominance Scale in healthy subjects.

Materials and methods
A total of 82 mentally healthy subjects were assessed with a Combined Foot and Eye Dominance Scale. The Foot Dominance Subscale included a modified Chapman & Chapman Foot Dominance scale and a new Complex Tasks scale with four foot tests reflecting more complex tasks. The Eye Dominance Subscale included three eye tests. Scale reliability statistics (item-scale statistics, summary statistics for the items, Cronbach’s alpha), nonparametric Mann-Whitney test and Spearman’s rank correlation coefficient were used.

Results
Considerable differences were found in the contribution of the single items to the Combined Scale. The means of some items were 37.83 times greater than those of other items (from 0.15 to 5.61), which suggested greater phenogenetic component and consequently greater contribution of these items to the total scale mean. The mean correlation between the items of the Combined Foot and Eye Dominance Scale was strongly positive (0.39), indicating good internal consistency of the scale.

Conclusions
Eye and foot dominance appear to be a much subtler indicator of altered hemispheric lateralization than hand dominance. The Combined Dominance Scale provides a more adequate tool for objective measuring of leftedness, as a way to assess laterality, since this scale is to a great degree unaffected by socio-cultural impact. The scale would provide comparability of leftedness as an indirect clue of abnormal lateralization in studies of mentally healthy subjects and subjects with neurodevelopmental disorders with presumed abnormal cerebral asymmetry across cultures.

A Better Approach of Assessing Lalerality by Using Combined Foot and Eye Dominance Scale in Mentally Healthy Subjects

Department of Psychiatry and Medical Psychology, Faculty of Medicine

Acta Medica Bulgarica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Objective
To investigate the reliability (internal consistency) of a Combined Foot and Eye Dominance Scale in healthy subjects.

Materials and methods
A total...

A Better Approach of Assessing Lalerality by Using Combined Foot and Eye Dominance Scale in Mentally Healthy Subjects

Published Online: May 14, 2023

Page range: 33 - 41

Received: Dec 23, 2022

Accepted: Mar 09, 2023

DOI: https://doi.org/10.2478/amb-2023-0017

Keywords
dysmorphogenesis, laterality, eye dominance, foot dominance, Foot and Eye Dominance Scale

© 2023 K. Akabalieva et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A Better Approach of Assessing Lalerality by Using Combined Foot and Eye Dominance Scale in Mentally Healthy Subjects

Published Online: May 14, 2023

Page range: 33 - 41

Received: Dec 23, 2022

Accepted: Mar 09, 2023

DOI: https://doi.org/10.2478/amb-2023-0017

Keywordsdysmorphogenesis, laterality, eye dominance, foot dominance, Foot and Eye Dominance Scale

© 2023 K. Akabalieva et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
dysmorphogenesis, laterality, eye dominance, foot dominance, Foot and Eye Dominance Scale