Handedness distributions in nine professional groups

Area of Science:

• Neuroscience
• Psychology
• Human Biology

Background:

• Handedness, the preference for using one hand over the other, is a complex trait with potential links to cognitive functions.
• Previous research suggests variations in handedness across different populations and professions.
• Understanding these variations may offer insights into brain lateralization and function.

Purpose of the Study:

• To investigate the relationship between various professions and patterns of handedness.
• To determine if specific occupations are associated with a higher prevalence of left-handedness, right-handedness, or ambidexterity.
• To explore potential correlations between professional specialization and cerebral localization of visuospatial and language functions.

Main Methods:

• A study involving 1196 participants from diverse professions including accountants, architects, dentists, lawyers, librarians, mathematicians, orthodontists, orthopedic surgeons, and psychiatrists.
• Handedness was assessed using laterality scores from the Edinburgh Handedness Inventory and self-reported handedness preference.
• Statistical analysis was performed to compare handedness distributions across professions.

Main Results:

• Architects and lawyers exhibited the highest average scores for left-handedness.
• Orthopedic surgeons, mathematicians, and librarians demonstrated the most pronounced right-handedness.
• Psychiatrists and lawyers showed the highest prevalence of ambilateral tendencies, whereas mathematicians and librarians had the lowest.

Conclusions:

• The study indicates significant variations in handedness across different professions.
• Findings suggest a potential link between professional specialization and underlying patterns of brain lateralization.
• Further research is warranted to fully elucidate the complex interplay between profession, handedness, and cognitive functions.