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Class notes Chys 2p10
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CHYS 2P10Child Development
Lecture 6 – Intelligence
Dr. Tony Volk
tvolk@brocku.ca
Course Business
Debates continue this week, no seminars during Reading Week
Reminder about APA sessions
What is Intelligence?
Psychometric Views
Psychometric approach
Intelligence is a trait or set of traits on which individuals differ
Early Binet-Simon test
Mental age
Mental Age
To determine intelligence, they sought to examine items that were correlated with high teacher
ratings
From this they developed the Binet-Simon test of intelligence, which gave a score in terms of the
child’s mental level (also referred to as mental age)
, I.Q.
These tests were eventually modified in the U.S.A. to become the Stanford-Binet test
This test reported test scores in terms of intelligent quotient (IQ), which was a function of the
mental age of the child divided by their actual physical age
Adult version is the WAIS-III, child version is the WISC-III
How is Intelligence Measured?
Stanford-Binet Intelligence Scale
Intelligence Quotient calculated as
IQ = Mental Age/Chronological Age *100, but all modern tests now use Deviation IQs
The Wechsler Scales
WPPSI – III
WISC – IV
Tests include both verbal and nonverbal (performance) measures
IQ as a relative percentile
General Intelligence
Sir Francis Gelton believed that intelligence was based on biological differences in the speed of
neural conduction
He attempted to determine if there was a link between intelligence and the speed of sensory
processes (using basic instruments!), but he did not find any significant correlation
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