Online ISSN: 2515-8260

Human brain laterality markers and IQ:A comparative analysis

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Human brain laterality markers and IQ:A comparative analysis

Abstract

Introduction: Laterality is the preferences of individuals for use of symmetrical body parts. The intelligence of a person is associated with brain lateralization. All the markers for brain lateralization may have a correlation to the IQ level of an individual. Thus, the present study is an effort to define the correlation between IQ and hand-foot-eye preference of an individual, also included with study is the pattern of hair whorl. Materials and methods: With total of 600 participants, Edinburg Handedness Inventory, Chapman foot inventory and Miles test were used to assess handedness, footedness and eyedness respectively. Intelligence was assessed by Raven's Colored Matrices test for age group 3-11 years and Raven's Standard Progressive Matrices test for age group 12-20 years. Results: The Raven's Matrices score was significantly high in case of left handed, left footed and left eyed individuals compared to their right handed counterparts. Conclusion: In this study left handed, left footed and left eyed individuals were found to have higher IQ levels.

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