Gould (classic study) Flashcards
Psychometric testing
Tools that seek to provide numerical measures of human personality traits, attitudes and abilities
Background of Yerkes study
In early 1900s, intelligence tests developed in France by Binet-Simon to help school children who needed extra help in special schoold
These tests were designed to be done 1 at a time and not multiple at once
What type of study is this
A review done by Gould of Yerkes’s research on IQ in America
Why did Yerkes develop the IQ test?
To be done en masse by army recruits in America to determine which rank they should be given
To measure differences between races + immigrants of different ethnic backgrounds
What is Hereditarianism?
belief human behaviour is inherited by genetics thus determined from birth
which is more important than environmental factors in determining intelligence and behaviour
What were Yerkes’s aims with his distribution of IQ tests
Produce a reliable and valid way of measuring intelligence
Prove intelligence is quantifiable and objective compared to other scientific disciplines
What were Gould’s overall aims with the review?
Illustrate how these tests were flawed
Show how research can have disastrous consequences if socially sensitive and dealt carelessly
What type of experiment was Yerkes?
A Quasi experiment
Because independent variable was naturally occurring (race)
Sample of Yerkes study
1.75 million men of army recruits
Sample method of Yerkes
Opportunity sample of all those who happened to sign up
What IQ tests did Yerkes develop?
3 stages:
Army alpha test
Army beta test
Individual examination
What was in the army alpha test?
A written exam for literate participants
8 parts
included ordering sequences of numebrs, unscrambling sentences, analogies
Who was the army alpha test for?
Army recruits who were deemed literate
What was in the army beta test?
Paper made running with a pencil, cube counting, drawing what is missing from an image
Who was the army beta test for?
Illiterate test recruits
And those who failed army alpha test
Who was individual examination for?
Those who failed army beta test
What happened after recruits took the test?
They were assigned a grade from E to A which would determine their position in army
Guy called Boring did analysis of this to assign mental age scores and calculate mean mental age per race/ethnicity
What was the problem about administration of each test in terms of who took what test?
Logistical difficulties meant most people did not take correct test:
More men taking beta test
So what was considered literate lowered = more ppl take alpha
Mostly no individual examination occurred
What was the problem about testing conditions?
Taken in frantic and chaotic conditions of colonels barking orders which scared recruits so not in right state of mind to be tested
What was the problem about the design of the tests?
Did not measure actual intelligence: questions related to American culture, understanding of English, pencil work, even some literacy required for beta
Who was the tests biased against?
European immigrants not familiar with American culture/ English language, poorer Americans including segregated black Americans who didn’t have adequate schooling
Mental age of white Americans found by Yerkes
13
Mental age of black Americans found by Yerkes
10.41
Problems of the analysis of findings
Yerkes and Boring took reductionist approach: only believing hereditarias explanations: the results showed their native intelligence
Didn’t consider external factors