10.1 Links

Samples of primate vocalizations, both audio and video, can be found on the web. Go to The animal communication project for information on the calls of vervet monkeys and chimpanzees; an example of a chimpanzee vocalization is available at this site. Some examples of vervet monkey alarm calls can be found here.

Karl von Frisch’s 1973 Nobel lecture

AAAS News Archives hold a news item on Rico (see p. 000). 

For more information on the Clever Hans effect see Clever Hans on Wikipedia and Clever Hans in the Encyclopaedia Britannica.