Provide two lines of evidence that we are especially sensitive to biological motion?

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Provide two lines of evidence that we are especially sensitive to biological motion?



Answer:


  • Cutting and Koslowski (1978) 
  • given only point-light walkers to watch (a moving image with lights on representing major joints on the body), people have a high accuracy for detecting the sex and age of the walkers, but when the images are static and do not move, this accuracy drops significantly. Shoulder and hip differences make a big difference in determining the gender.
  • Pinto and Bertanthal (1994)
  • Infants at four months can differentiate biological versus non-biological movement (Pinto and Bertanthal, 1994)


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