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The ratio of the second to fourth finger as a predictor of fine and gross motor skills girls 4 to 7 years
Poster Presentation
Paper ID : 1289-11THCONF
Authors
1Sport Organization of Tehran Municipality
2استاد
3Assistant Prof. in Motor Behaviour, Science & Research Branch, Islamic Azad University, Tehran, Iran
Abstract
Introduction: Second to fourth finger length ratio (2D:4D) has been hypothesized to be determined by prenatal sex steroids which has an influence on motor skill.
Methodology: The purpose of this study was to investigate the ratio of the second finger to the fourth one as a predictive element for gross and fine motor skills in 4 to 7 years old girls. Samples were selected by using availability method and 55 children participated in the study. The length of their hand fingers was measured by the scanner machine and Kinovea software. In order to be able to study the gross and fine skills of participants, short version of Bruininks-Oseretsky Test of Motor Proficiency (BOT2) was used. The descriptive-statistical and inferential (regression) tests were used to analyze the data.
Results: Findings showed that the ratio of second to the fourth finger (2D:4D) can be an appropriate predictor of gross and fine movement skills in children. The standardized beta coefficient showed that the second to fourth finger ratio predicted more than 35% and 42% of the variance in gross and fine motor skills, respectively.
Discussion: In short, It can be concluded that the finger ratio has a functional role in relation to the process of talent identification and talent-finding educators can use this new indicator to identify talented children. The advantages of this index are stability, ease of implementation, low cost of laboratory and high predictive power. Thus this study showed that prenatal testosterone may have a causal role in the development of motor skills which can be predicted by 2D:4D ratio as a proxy marker.
Methodology: The purpose of this study was to investigate the ratio of the second finger to the fourth one as a predictive element for gross and fine motor skills in 4 to 7 years old girls. Samples were selected by using availability method and 55 children participated in the study. The length of their hand fingers was measured by the scanner machine and Kinovea software. In order to be able to study the gross and fine skills of participants, short version of Bruininks-Oseretsky Test of Motor Proficiency (BOT2) was used. The descriptive-statistical and inferential (regression) tests were used to analyze the data.
Results: Findings showed that the ratio of second to the fourth finger (2D:4D) can be an appropriate predictor of gross and fine movement skills in children. The standardized beta coefficient showed that the second to fourth finger ratio predicted more than 35% and 42% of the variance in gross and fine motor skills, respectively.
Discussion: In short, It can be concluded that the finger ratio has a functional role in relation to the process of talent identification and talent-finding educators can use this new indicator to identify talented children. The advantages of this index are stability, ease of implementation, low cost of laboratory and high predictive power. Thus this study showed that prenatal testosterone may have a causal role in the development of motor skills which can be predicted by 2D:4D ratio as a proxy marker.
Keywords
Ratio of second to fourth finger; Gross and fine motor skills; Bruininks-Oseretsky test of motor proficiency
Subjects