I.
There are two types of solution strategies-algorithms
and heuristics.
A.
An algorithm may lead to a correct answer if step-by-step
problem-solving procedure is executed accurately even though in some cases, we
may not know the algorithm or that the problem may not exist.
B.
Heuristic is another form of problem-solving strategy
which seems reasonable given past experiences and does not make a guarantee.
C.
An anagram, like the letters LOSOGCYHYP, when put
together in the correct fashion, produces the word PSYCHOLOGY-a practice that
can be solved by use of the heuristic problem-solving strategy.
II. There are three types of
heuristics-anchoring and adjustment heuristic, working backward heuristic, and means-end
analysis heuristic.
A. Anchoring and adjustment heuristic are the
use of one’s initial estimate as an anchor like our first impression of a
person.
B. Working backwards as in solving a math
problem or equation, psychologists define it as working
backward heuristic.
C. The process of breaking down a problem into
sub-goals while working toward decreasing the distance
is called means-end analysis as in the Tower of Hanoi problem.
III.
The history of intelligence tests started with Sir Francis Galton, in 19th
century England.
A.
Initially, Sir Francis Galton, for the purpose of
eugenics, was involved in developing a test for intelligence.
B.
Sir Francis Galton is credited for developing
correlational statistics which did not exist before him.
C.
It was Karl Pearson, a disciple of Galton, who
formulated the correlational coefficient of Galton.
IV.
Intelligence Quotient is a formula of dividing mental
age by chronological age and then multiplying by 100.
A.
Frenchman Alfred Binet and his assistant Theophile
Simon, while working on the problem of mental retardation, got the backing of
the French government to develop a test that could be used to determine
intellectual development in children which finally led to the acceptance of the
first test on intelligence in 1905.
B.
It was Lewis Terman, an American working at Stanford University, who came up with what became
known as Stanford-Binet scores in 1916.
C.
David Wechsler, Chief Psychologist for Bellevue
hospital in New York,
developed the Wechsler Adult Intelligence Scale (WAIS) in 1955.
D.
H e also developed the Wechsler Intelligence Scale for
Children (WISC).
V.
Wechsler also devised a more advanced way of reporting
intelligence leading to a process known as standardization.
A.
Standardization is a way of interpreting test scores by
providing test models.
B.
When test scores are consistent, it is known as
reliability because the coefficient is strongly positive.
C.
When a test predicts or measures what it is supposed to
predict, it is known as validity.
D.
Despite agreeing on what intelligence should predict,
psychologists do not agree on how to define intelligence.
VI.
For over a hundred years, there has been long-running
argument over whether intelligence is a single general ability or a collection
of specific abilities.
A.
On intelligence test performance, it was Charles
Spearman who argued that it is a function of two factors: general intelligence
and specific intellectual abilities such as reasoning.
B.
L. L. Thurstone, based on his research, argued that
there were seven primary mental abilities-verbal comprehension, number
facility, spatial relations, perceptual speed, word fluency, associative
memory, and reasoning.
C.
Thurstone used factor analysis, a statistical technique
that identifies clusters of test items that measure the same ability (factor).
D.
Raymond Cattell
(a student of Spearman) and John Horn came up with two types of slightly
different mental ability theory that influenced researchers in aging:
1.
Fluid intelligence, abilities independent of acquired
knowledge, include abstract learning, logical problem solving, and the speed of
information processing.
2.
Crystallized intelligence refers to accumulated
knowledge and verbal and numerical skills.
VII.
Modern psychologists believe that both heredity
(nature) and environmental experiences (nurture) best define intelligence.
A.
Heritability is an index of the degree that variation
of a trait within a given population is due to heredity.
B.
Reaction range is the genetically determined limits for
an individual’s intelligence.
C.
The Flynn effect refers to the fact that in the United States
and other Western industrialized nations, average intelligence scores have
improved steadily over the last century.