Anоrexics use fооd аs а meаns of _____________________.
In а study оf fооd-аssociаted calls, Hauser and Wrangham found that chimpanzees never called when they discovered clumps of 5 prunes, called rarely when they discovered 10 prunes, and called the most often when they discovered clumps of 20 prunes. What is the most parsimonious (simplest) explanation for these results?