An intelligence quotient is a(n):
a. midpoint in a set of intelligence test scores that is computed after the scores are ordered from the highest to the lowest.
b. measure of the variability of intelligence test scores that is computed by taking every score in the distribution and determining how much it differs from the mean.
c. statistical estimate of the proportion of the total variance in intelligence that is attributable to genetic differences among individuals within a group.
d. measure of intelligence originally computed by dividing a person's mental age by his or her chronological age and multiplying the result by 100.
Answer: d
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An example of the instrumentation threat to internal validity is
a) Questions in the survey are periodically reworded. b) Standardized tests are used. c) The experimenter leaves the room during the test. d) Assessments use both multiple choice and true/false questions.
Working memory is knowledge of words and concepts, usually visualized as a network with notes and links between nodes
Indicate whether this statement is true or false.