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Lecture

PSY313H5 Lecture Notes - Flynn Effect, Air Traffic Controller, Fluid And Crystallized Intelligence


Department
Psychology
Course Code
PSY313H5
Professor
Giampaolo Moraglia

Page:
of 11
Thursday February 14, 2013
LEC 5: INTELLIGENCE AND AGING
Cannot be answered with empirical evidence alone because there are various ways
to collect data, such as longitudinal or cross-sectional which lead to diff estimates in
age related results of intelligence
-Disagreements arise when it comes to explaining the data
-Scholars have questions of the validity of these tests
Do they provide the proper instruments to measure intelligence in the older
cohorts?
It relies on objective standardized procedures
-First appeared in 1959 in America, first standardized in NYC
-Under went several revisions and upgrades
-Newest version is called WAIS 4, introduced in 2008
-Somewhat different from all the previous ones
Data that concerns us were gathered with previous versions
Data with new version is quite limited
Bulk of data pertains to data gathered in previous versions
-The WAIS remains one of the most extensively used tests for general intellectual
assessment of older adults
2
Has provided many of the data based on the current debate
Consists of 2 parts: verbal and performance
-Each of these are divided into subtests
-Each subtests range from easy to increasingly difficult to very difficult
-Verbal scale is typically given first
Meant to measure our store of world knowledge
And our ability to apply and make use of it
-Performance tests mainly measure:
Our knowledge that is sensible and rational behavior of every day situations
-Verbal subtests have a fairly different orientation
Manipulate blocks and assemble puzzles
Measure on the spot analytical and problem solving abilities
How they can approach and solve an unfamiliar problem, which should be helped
by our knowledge of the world (our store of knowledge)
Independent of what we know so our pure ability of knowledge is assessed
(Diagram below)
-Timed to reproduce the symbol task and the picture task
Speed is critically important in the performance tests
3
IQ equivalents of raw scores at different ages
WAIS Performance scaleOriginal 1955 data
The IQ that a person receives is not simply derived
Derived by comparing how a person has scored relative to their age group
Each of the verbal scores has a score, adding up to the overall verbal test score
As well as the performance scale, then adding verbal and performance score
together
Performance is determined not by the raw score, but referring it to the
performance of your peers
Compare the average raw score, for people different ranges this average raw
score is then given an IQ of 100
---Translated into an IQ of 100
---If average raw score is 40 for age a certain age group is translated is translated
into an IQ of 100
---Different average raw scored produce different IQ values depending on the
statistical deviations
---A persons final score is based on not only on the absolute performance, but also
compared to others in a particular reference group with similar age
-This table shows the IQ equivalence of raw scores
-Identical raw scores translate into increasingly higher iq scores
-Difference is huge when you compare young and old
A raw score of 30 (falls into the mentally retarded category in a younger age
group) in considered average intelligence for older adults