Now showing items 1-3 of 3

  • Acoustic models of orangutan hand-assisted alarm calls 

    De Boer, Bart; Wich, Serge A.; Hardus, Madeleine E.; Lameira, Adriano R. (2015-03-18) - Journal article
    Orangutans produce alarm calls called kiss-squeaks, which they sometimes modify by putting a hand in front of their mouth. Through theoretical models and observational evidence, we show that using the hand when making a ...
  • Culture extends the scope of evolutionary biology in the great apes 

    Whiten, Andrew (2017-07-25) - Journal article
    Discoveries about the cultures and cultural capacities of the great apes have played a leading role in the recognition emerging in recent decades that cultural inheritance can be a significant factor in the lives not only ...
  • Gestural communication in orangutans (Pongo pygmaeus and Pongo abelii) : a cognitive approach 

    Cartmill, Erica A. (University of St Andrews, 2009-06) - Thesis
    While most human language is expressed verbally, the gestures produced concurrent to speech provide additional information, help listeners interpret meaning, and provide insight into the cognitive processes of the speaker. ...