@ARTICLE{Premack1983,
  author = {Premack, D.},
  title = {{The codes of man and beasts}},
  journal = {Behav Brain Sci},
  year = {1983},
  volume = {6},
  pages = {125--167},
  number = {1},
  abstract = {Previous findings indicate that exposing the chimpanzee to language
	training appears to enhance the animal's ability to perform some
	kinds of tasks but not others. The present author characterizes the
	language training and reviews some of the evidence for the effects
	of this training on the chimpanzee. The abilities that are enhanced
	involve abstract judgment, as in analogical reasoning; matching proportions
	of physically unlike exemplars; and completing incomplete (external)
	representations of action. The abilities that do not improve concern
	the location of items in space and the inferences one might make
	in attempting to obtain them. Representing items in space and making
	inferences about them can be done with an imaginal code, but representing
	relations and judging the relations between them, as in analogies,
	require a more abstract code. Language training cannot instill such
	an abstract code, but for species that have the code to start with,
	it may enhance the animal's ability to use it. Commentaries on the
	article and the author's response to them are included.}
}

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