Chapter 7: Assessment (Intellectual and Cognitive Measures) Flashcards
g Factor
the general factor shared by all intellectural activities
Fluid Intelligence
the ability to solve novel problems
innate intellectual potential
Crystallized Intelligence
what we have learned in life, both from formal education and general life experiences
Premorbid IQ
intellectual functioning prior to an accident or the onset of a neurological decline
Full Scale IQ
the total score for an intelligence scale obtained by summing scores on verbal and non-verbal scales
usually referred to simply as the IQ
Representativeness
extent to which a sample reflects the characteristics of the population from which it is drawn
Flynn Effect
the observed trend that IQ scores in developed countries have increased over the past few decades
Semantic Memory
memory of general knowledge of words, concepts, and events
Episodic Memory
memory of a person’s direct experiences
Is intelligence a caste system?
our society places tremendous importance on intelligence
belief that higher levels are associated with higher standard of living, better emotional adjustment, more favorable employment, and a host of other social advantages
ethics and utility of formal measurement has been hotly debated
intelligence test results are essential to establishing eligibility for special funding, either for giftedness, or for individuals in need of special ed/income support
What are the correlates of intelligence?
40-80% of variability in intelligence scores is due to genetic factors
environmental affects the extent to which individuals achieve their full potential
280 genes associated with intellectual disability identified; no single gene associated with normal variation
breast-feeding seems to be associated with higher IQ among babies born prematurely
What are protective factors for intelligence?
breast-feeding seems to be associated with higher IQ among babies born prematurely
higher SES in children adopted form low SES homes
aerobic exercise in older adults
What is the clinical context of intelligence?
to identify possible impairments/weaknesses/strengths
to identify appropriate learning environments
to make recommendations for modifying work/home environments
How is IQ calculated?
calculating IQ, or intelligence quotient stems from a desire to compare peoples mental functioning to their chronological age
IQ = mental age divided by chronological age multiplied by 100
problem: IQ distribution differs as a function of age
solution: standardized raw scores according to a fixed mean and standard deviation
puts everyone on a common scale (deviation IQ)
Who was David Wechsler?
there are several different definitions of intelligence
Wechsler said that global capacity to purposefully act, think rationally, and interact effectively with the environment
Wechsler is probably the principal figure in the development of modern intellectual assessment tools
his definition has pervaded modern scientific understandings of intelligence
What are the features that all definitions of intelligence have in common?
abstract thinking
learning from experience
solving (novel) problems through insight
adjusting adaptively to new situations/demands
focusing and sustaining cognitive resources toward the realization of a goal
What are the three categories of theories of intelligence?
factor models
hierarchical models
information processing models
What are factor models of intelligence?
central assumption: a core set of underlying intellectual domains combines to determine one’s level of performance on any given task
the best known of those was proposed by Spearman (1927); it is a two-factor model
What is the Spearman two-factor model of intelligence?
there is a primary factor known as g (general), and a number of specific factors known as s (specific)
specific factors combine with general intelligence to determine performance on given tasks; higher or lower levels of either will affect task performance
significant empirical support exists for this model; the idea is by no means out-dated
What is the Thurston (1938) factor model of intelligence?
embodies similar reasoning, but downplays the role of g, and instead assigns higher importance to a group of factors known as primary mental abilities
these underlie a variety of broad domains necessary for successful task performance
minimal overlap between them, but that overlap is acknowledged to correspond to Spearman’s g
What is the problem with factor models of intelligence?
a theoretician could posit as few as two, or a great many factors
when are those really reflective of distinct abilities, and when are they merely combinations?
What is fluid intelligence?
reflects ability to solve novel problems
What are hierarchical models of intelligence?
Horne & Cattell (1966) distinguish between fluid intelligence and crystallized intelligence
both are considered to be general factors
there is nothing in this model that requires that crystallized intelligence units are the same from one person to the next
think of them as established abilities
What is crystallized intelligence?
develops on the basis of formal experience and education