PSY1020 - CHAP 9 Intelligence Flashcards
Intelligence
the application of cognitive skills and knowledge to learn, solve problems and obtain ends that a revalued by an individual or culture.
Psychometric Instruments
“ests that quantify psychological attributes such as personality traits or intellectual abilities — to see how people differ from and com- pare with each other on psychological ‘scales’. Although scientists usually design measures to fit the construct they are trying to quantify (e.g. scales to measure weight or mass), almost the opposite has occurred with the Western concept of intelligence, in which the measures came first and the construct largely evolved to fit the measures. “
Intelligenct Tests
“are measures designed to assess an individual’s level of cognitive capabilities compared to other people in a population”
Binet:
Mental Age
Chronological Age
Mental Age: The average age at which children achieve a particular score.
Chronological Age: Actual Age
Intelligent Quotant (IQ)
“IQ = (MA/CA) × 100.”
Wechsler-Bellevue tests
Page 347
Created to minimise bias towards native-born english speakers.
“Wechsler Adult Intelligence Scale, Fourth Edition, or WAIS-IV (2008),”
“Wechsler Intelligence Scale for Children, Fourth Edition, or WISC-IV (2003)”
IQ is derived from a number of subtests, which largely attempt to measure four index scales: verbal comprehension, perceptual reasoning, working memory and processing speed. The subtests within a scale are used to derive the corresponding index score (see figure 9.2). Verbal IQ (VIQ) and Performance IQ (PIQ) from the WAIS-III have been replaced with a Verbal Comprehension Index (VCI) and Perceptual Reasoning Index (PRI), respectively. In addition to a single, Full Scale IQ score, the WAIS-IV yields the General Ability Index (GAI) as an optional composite score. The GAI is derived from the sum of scaled scores for the three verbal comprehension and three perceptual reasoning subtests, providing a summary score that minimises the influence of working memory and processing speed.
Intellectual Disability
“refers to significantly below average general intellectual functioning (IQ less than 70), with deficits in adaptive functioning that are first evident in childhood and appear in more than one realm, such as communicating with others, living autonomously, interacting socially, functioning in school or work, and maintaining safety and health. Although low IQ is a component of the definition, IQ is not enough to diagnose intellectual disability”
Gifted (Exceptionally talented)
“Like definitions of intelligence, definitions of giftedness depend on whatever skills or talents a society labels as gifts”
Creativity
Divergent Thinking
Creativity: “the ability to produce valued outcomes in a novel way”
Divergent Thinkning: the ability to generate multiple possibilities in a given situation, such as describing all the possible uses of a paper clip.
Savant Syndrome
Savant Syndrome: “have low overall intelligence but an extraordinary talent in one particular realm of abil- ity”
IQ Tests
Lack of Theoretical Basis: Critics argue that intelligence tests provide little insight into the kind of practical intelligence involved in achieving goals in everyday life
Culturally Biased:
Approaches to Intelligence
Psychometric approach
Information-Processing approach
Centremporal theories of practical and multiple intelligences
Psychometric Approach to Intelligence
“tries to identify groups of items in a test that correlate highly with one another in order to discover underlying skills or abilities”
Factor Analysis: a statistical procedure for identifying common elements, or factors, that underlie performance across a set of tasks.
Psychometric Approach to Intelligence:
Spearman’s Two Factor Theory
Distinguishes two types of factors — general and specific.
G-Factor - General Intelligence
S- Factor : Specific Factor. Reveals specific abilities unique to certain tests or shared only by a subset of tests.
“Individuals vary in overall intellectual ability (the g-factor), but some people are better at mathematical tasks and others are better at verbal tasks (s-factors).”
Psychometric Approach to Intelligence:
Gf-Gc Theory
Gf–Gc theory distinguishes two general intelligence factors — fluid intelligence and crystallised intelligence — and seven more specific factors.
At a lower hierarchical level are seven more specific factors: short-term memory, long-term memory, visual processing, auditory processing, processing speed on simple tasks, decision speed (processing speed on more difficult tasks, such as solving problems) and quantitative knowledge (mathematical reasoning).