International Left-handers Day

About 10 percent of the population is left handed and today is International Left-handers Day. The annual event started in 1992, and hen left-handers are asked to celebrate their sinistrality and increase public awareness of the advantages and disadvantages of being left-hand .

We talk to Dr Katrina Phillips of the University of Auckland, an expert in applied behaviour analysis, who tells us why left and right handedness comes about and why you can be left handed but not left footed!

International Left-handers Day
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