posted by Dr. Sous Blogger
From the APA Monitor, January 2009:
Recently it's been learned that humans aren't the only species to have "handedness." It turns out, about 70% of chimps are right-handed (for movements requiring skilled coordination - in this case, fishing peanut butter out of a plastic pipe). Chimps showed much less handedness preference for unskilled movements such as reaching.
However, there are some behaviors in which chimps use almost exclusively the right hand. In 2004 a biopsychologist designed research to determine which hand chimps throw with. "Chimps usually throw at new people - they'll often throw their [excrement] at them." The scientists introduced themselves to a variety of chimps and recorded which hand each chimp used to throw feces at them. It turned out that chimps were extremely right-handed for this behavior.
Somehow, I think this explains a lot about the human chimp relatives.
And now, back to work.