A recent study has found a correlation between identifying as left-handed and holding left-leaning political views. On a 10-point scale measuring political ideology, left-handed individuals rated themselves, on average, nearly half a point further left than their right-handed counterparts. Researchers noted that this difference is more pronounced than the gender gap in political views, where women were only 0.4 points more left-wing than men.
However, this association diminished significantly when the study measured actual hand preference for various tasks, rather than relying on self-identification. This suggests that the link is not rooted in biological factors like brain lateralization but may stem from psychological or social influences.
Professor Jérémie Bertrand of the IÉSEG School of Management, the lead author of the study, proposed that the psychological impact of identity, rather than a biological predisposition, plays a key role. "What appears to matter is whether someone files themselves under the word. It is the identity, not the hand," Bertrand stated.
While traditional factors such as income, age, job, and education are commonly used to explain political alignment, this research explored more subtle influences. The study surveyed 1,404 individuals across 18 Western countries, including the United States, France, Germany, Italy, Spain, and the United Kingdom.
One theory suggests that individuals who identify as left-handed may feel a stronger affinity with the political left due to their experiences as members of a minority group. Left-handed people constitute about 10 percent of the population and have historically faced social stigma. In some regions, particularly in Europe until the 1970s, left-handed children were even forced to write with their right hand.
Another proposed explanation centers on the linguistic connection between "left" as a direction and "left" as a political leaning. Researchers hypothesize that this shared terminology might trigger a subconscious psychological phenomenon known as implicit egotism, where individuals are drawn to things that share similarities with themselves. Studies on implicit egotism have shown tendencies such as people named Lawrence being more likely to become lawyers.
This linguistic theory is supported by findings that the association between self-identified left-handedness and left-wing politics was stronger in countries like France, Spain, Italy, and Portugal, where political discourse is explicitly organized along a left-right axis. In contrast, the link was less pronounced in the United Kingdom, where political divisions are often framed by party names like Labour and Conservative.
The study's authors caution that their findings do not imply that all left-handed people vote left, nor that changing handedness would alter political identity. Instead, the research highlights how political views can be influenced by factors operating outside conscious awareness, suggesting that political choices may be less purely rational than commonly believed.