animal models Flashcards
uses of animal models
form hypotheses about cognitive function
makes inferences about cognitive function
study brain systems
why can animals not produce same speech sounds?
vocal tracts not evolved for human language
sign language used as an analogue
teaching baboons language
learned letter like pattern recognition
learned within 6 weeks to distinguish words from non-words in artificial language
Washoe
chimp taught to use and communicate in sign language
produced new combinations and learnt new sign by watching carers
learnt 350 signs
Nim Chimpsky
Washoe raised like a human child
Tim raised in sterile lab conditions
only learnt 125 signs
criticise Washoe as shows cant learn as much if not treated like a human
but environment negatively affected Nims intellectual abilities
criticised for not providing a nurturing or motivating environment
songbirds language
genes linked to syntax and hierarchical processing of linear signals
different dialects of the same species
- indicates learning instead of innateness
use of animal models in language studies
some mammals use complex and varied vocalisations that share some characteristics with human speech
useful to study language ability, evolutionary basis of language and disordered language
FOXP2 gene
identified as a candidate gene for language function
shows mutations in several speech and language disorders
gene mutations correlated with brain abnormalities in several areas where FOXP2 regulates neuron maturation, connectivity and plasticity