Robert Yerkes

• What was Yerkes?

  President of APA in 1917
• What did Yerkes propose?

  Assessing the intelligence of army recruits

  • Existing intelligence tests were time intensive
• What did Yerkes develop?

  Group test of intelligence that could be administered by a single examiner

  • Army alpha test
  • Army beta test
• Test was given to over 1 million US soldiers during the war
• Increased public awareness of psychology but Yerkes tried to justify eugenics with his findings