Though the recent research has its problems, it has suggested which of the following trends about intelligence changes as we age?
a. Generally, intelligence is very stable, and may even increase into later adulthood.
b. Intelligence is a very static phenomenon – there are no significant changes that occur over the course of the lifespan.
c. It is very clear that intelligence is an inverted-U shaped curve – it starts low, increases through childhood into adulthood, and then shows a significant decline as we get over the age of 70 years.
d. Intelligence is a linear phenomenon – it slowly increases as we age from childhood to adulthood, getting higher the older we get.
Answer: A
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Vinay uses data from his study to estimate that the heritability of athletic ability is .60. This implies that about 60 percent of _________
a. variation in athletic ability is due to genetics. b. variation in athletic ability is due to environment. c. people are athletic. d. people are not athletic.
An intelligence quotient is a ________
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 computed by comparing how an individual has performed on a standardized test compared with to others of the same age.