Individual Differences: Gould Flashcards
Background
> many definitions of intelligence
different approaches to understand/categorise intelligence- fluid/crystalised, spearman’s ‘g’ factor
measuring intelligence- IQ= intelligence quotient
1905 test created to identify children in France who needed education support
yerkes- aimed to prove scientific status of psychology
aim
> problematic nature of psychometric testing and measurement of intelligence
bias in psychology and societies prejudice influence objectivity of intelligence testing
political and ethical implication of psychological research
method
> edited section of Gould’s book ‘the mismeasure of man
book summarised history of intelligence
current study reviews methods used by Yerke’s to make psychology more scientific
sample
1.75 million recruits in USA WW1, white American’s, European immigrants and negroes
procedure Alpha
> literate recruits
8 parts
intended to measure ‘native intellectual ability’
culturally biased- relied on American culture exposure
procedure Beta
> literary recruits
7 parts
culturally specific pictures
3/7 parts needed written answers
procedure individually spoken
> fail alpha and beta
graded A-E +/-
not everyone who should have taken test had opportunity to
queues fro beta so long minimum entry for alpha dropped
findings
> boring- Yerkes lieutenant- analysed results to ‘discover’ these ‘facts’
average mental age of white American males 13. ‘interbreeding with negroes and the feeble-minded’ lowered IQ of the USA
European immigrants could be ‘graded’ by country of origin with darker skinned Europeans less intelligent that ‘fair people’
black males have average age of 10.41, lighter skin colour higher the IQ
impact on officer screening
> 2/3 of those promoted had achieved good scores on tests
requests from other institutions use testing methods
discrimination
> implications suggest there is a measurable difference between races
books published supporting these findings were used as racist propaganda
yerkes later acknowledged that the tests were difficult for those with less experience with the English language
immigration restriction act
> influenced by Yerkes’ findings
US placed a quota on the number if immigrants who would be permitted entry
allowed 2% of census figures from 1890
estimated that as many as 6 million people were denied entry from southerns and eastern European between the passing of this act and the start of ww2
conclusions
> IQ tests are culturally and historically biased
IQ tests do not measure innate intelligence
IQ testing is unreliable and may produce invalid data
inappropriate, poor administered psychometric tests can lead to tragedy