gould et al

• what was the aim of goulds study ?

  it aimed to examine early history of intelligence testing as conducted by yerkes on army recruits in the USA during WW1
• what was the sample ?

  1.75 million army recruits
• what type of study is it ?

  review article of yerkes
• what was the main procedure?

  there were three types of tests

  • alpha for literate recruits
  • beta for illiterate ( or if they failed apha )
  • spoken exam if they failed both
• evaluation of procedure ?

  • questions were heavily based on American culture while some recruits did not live there long enough
• sample evaluation?

  • all male
  • around same age
• identify two results?

  • average white american had mental age of 13 just above a 'moron'
  • black american mental age of 10
• how was reliability shown?

  • all took the same tests with same questions therefore standardised
  • same mark scheme to mark their question
• ethical issues ?

  introduction of the immigration restriction act 1924 banning jews from entering america