1. 1. Overview of the questions about human language
    1. 1.1.issues and questions
      1. 1.1.1.What is language?
        1. 1.1.1.1.structure
        2. 1.1.1.2.biological foundations
      2. 1.1.2.How is it acquired?
      3. 1.1.3.How did it evolve?
      4. 1.1.4.What are its functions?
  2. 2.animal communication
    1. 2.1.vervets
    2. 2.2.ape studies
      1. 2.2.1.field observation
      2. 2.2.2.home-raised
        1. 2.2.2.1.Vicki the chimp
      3. 2.2.3.laboratory
        1. 2.2.3.1.David Premack and "Sarah"
        2. 2.2.3.2.Francine Patterson and "Koko" the gorilla
        3. 2.2.3.3 (The Gardners are not presented)
        4. 2.2.3.4 (Kanzi the bonobo is not presented.)
  3. 3.origins of language
    1. 3.1.vocal tract
    2. 3.2.brain
  4. 4.sign language
  5. 5.acquisition
    1. 5.1.precursors
    2. 5.2.speech discrimination
    3. 5.3.syntax and vocabulary
      1. 5.3.1.Creoles and Pidgin languages
  6. 6.brain functions
    1. 6.1.localization
    2. 6.2.aphasia (Wernicke's case)
  7. 7.language and thought