Psych Chapter 10 set 4
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14 Terms
Galton’s lab was used for?
People paid a small fee to have physical characteristics and sensory abilities measured.
What Galton contributed to the statistics
He plotted results and observed many abilities followed a normal distribution.
Why France needed Binet and Simon’s int test
Public education was expanding, and schools needed to determine children’s educational needs.
How did Bient and Simons test become more difficult?
They progress from simple tasks, such as responding to an examiner, to harder tasks, such as defining words and repeating digit sequences.
What was the problem with the Stanford-Binet test?
Mental age appeared to level off around age 16, causing IQ scores to decrease as chronological age increased.
Why could an older adult receive a lower IQ score on the Stanford-Binet test?
Their mental age might stay constant while their chronological age continued to increase.
Wechsler’s Intelligence Tests: Deviation IQ. What is deviation IQ?
An IQ score that compares a person’s performance with the average performance of people the same age.
How is deviation IQ calculated?
People take the test, and their scores are compared with the average score for their age group.
What is the average IQ score for every age group?
100
Q7: What is the standard deviation used for IQ scores?
15 points
What does it mean to score one standard deviation above the mean?
Having an IQ of 115
Why doesn't deviation IQ automatically decrease with age?
Because people are compared with others in their own age group.
What would the average IQ be for a 16-year-old and a 30-year-old?
100 for both age groups.
Lewis Terman
Built on Bienets work - adapted the intelligence test for American children, using English and American cultural examples.
Intelligence quotient IQ - Used William Sterns idea of dividing mental age by chronicle logical age and multiplying it by 100.
The formula for IQ is mental age divided by chronic age times 100
Validity - The test scores match teachers assessments of students intelligence, suggesting the test measured what it was supposed to measure.
Impact - the Stanford - Binet test became the standard for intelligence testing and still has updated additions today.