Today it is Lefthanders day The club website has some fun facts
Here are some facts for social scientists
How many left handed people are there?
Estimates vary. According to Vuoksimaa E., Koskenvuoa M., Rosea R.J., Kaprio J. 2009. “Origins of Handedness: A Nationwide Study of 30,161 Adults.” Neuropsychologia 1294–1301.
Roughly 12 % of humans are left-handed, with somewhat higher rates among males than females
however according to Medland, Sarah E., Ira Perelle, Veronica De Monte, and Lee Ehrman. 2004. “Effects of Culture,Sex, and Age on the Distribution of Handedness:An Evaluation of the Sensitivity of Three Measures of Handedness.” Laterality: Asymmetries of Body, Brain and Cognition 9(3): 287–97. There can be social reasons why people are not recognised as left handed including whether a formal system of writing is in place. . In some countries stigma remains against left handed people. indeed 16% Nigerians reported attempts to switch their handedness earlier in life
likewise a 2006 study found cultural and environmental pressure against left-hand preference in urban and semi-urban Malawi.
According to Ntolka E , Papadatou-Pastou M . 2018
Right-handers have negligibly higher IQ scores than left-handers: Systematic review and meta-analyses.
search for more examples of links between handedness and health/ creativity and intelligence
APA Psychnet (Psychology free version note many universities provide free access to full text subscription versions)
Is it linked with lower wages?
In The Wages of Sinistrality: Handedness,Brain Structure, and Human Capital Accumulation. Joshua Goodman in 2014 considers thew evidence
also useful is a working paper
The economic consequences of being left-handed: some sinister results
Kevin Denny and Vincent O'Sullivan IFS Working Paper W06/07 which reveals that female left handed people are paid less.
Also on this topic. Christopher S. Ruebeck & Joseph E. Harrington, Jr & Robert Moffitt, 1997. "Handedness and Earnings," Economics Working Paper Archive 533, The Johns Hopkins University,Department of Economics, revised Jun 2004.
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