term1 Definition1term2 Definition2term3 Definition3
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advantages of the method
appropriate language learning environment could be provided
studied for a long period of time
rich detailed data
complex interaction
disadvantages of method
findings may not be typical of all chimps
other studies may draw different conclusions and therefore study lacks external reliability
strengths of validity
established clear criteria to ensure expectation bias did not affect validity of results
weaknesses of validity
researches lack objectivity
expectations may bias recordings
observer bias
strengths of reliability
strict criteria followed 15 days by 3 observers
inter observer reliability increased
observers trained in use of the coding system
ethical issues
morrally questionable as it is not to alleviate human suffering
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