Related Experiment Video
Updated: May 13, 2026

Block Building Task Identifies Distinct Groups of Left/Right-hand Choice Patterns After Unilateral Peripheral Nerve Injury
Published on: March 21, 2025
Investigation of the link between higher order cognitive functions and handedness
Ion N Beratis1, Andreas D Rabavilas, Miltiadis Kyprianou
1First Department of Psychiatry, Eginition Hospital, National University of Athens, Athens, Greece. ionas96@hotmail.com
Abstract:
The study aimed to investigate the hypothesis that in high-functioning individuals the left-handedness phenotype facilitates the performance of executive-related tasks that engage the right hemisphere. The Trail-Making Test and Letter-Number Sequencing, previously indicated to engage the right hemisphere, were applied on 47 right-handers and 50 left-handers. There was a significant effect of handedness on both measures and an interaction effect of gender and handedness on the Trail-Making Test. The findings are considered to support the view that greater engagement of right-hemispheric resources facilitates the performance of higher order functions that orchestrate cognition, such as mental flexibility, inhibitory control, and working memory operations.
More Related Videos
09:01A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance
Published on: May 7, 2014
05:58Digital Handwriting Analysis of Characters in Chinese Patients with Mild Cognitive Impairment
Published on: March 11, 2021
Related Concept Videos
Lateralization
Cerebral Hemispheres
Language and Cognition
Cognitivism
Previously dominated by behaviorism, which prioritized observable behaviors and largely ignored mental processes, psychology transformed in the 1950s. Cognitive psychologists argue that understanding how we think and process information is...
Higher Mental Functions of the Brain: Language
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...