A longitudinal study discussed in your textbook used MRI scans to study the development of the cerebral cortex as children aged. Which of the following is one of the findings from this study?
a. In the brightest children, the cerebral cortex is always thicker than it is in other children.
b. The cortex in very bright children develops more rapidly and for a longer time than it does in other children.
c. The cortex in average children reaches its maximum thickness several years later than it does in bright children.
d. In children with average IQs, the cortex reaches maximum thickness at age 11 or 12.
B
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The research method in which the investigator manipulates a variable under carefully controlled conditions and observes whether any changes occur in a second variable as a result is the
a. scientific method. b. correlational method. c. descriptive method. d. experimental method.
Regarding learning/memory strategies, PRODUCTION is to UTILIZATION as ____ is to ____
a. MOVEMENT :: IDEA b. GENERATE :: APPLY c. DESTINY :: CHOICE d. CUED RECALL :: FREE RECALL
Cigarettes release both nicotine and
a. acetylcholine. b. carcinogens. c. tryptophan. d. noradrenaline.
The difference between creating a Z score from a single score and creating one from a sample mean is that
A) you use the mean and standard deviation from the distribution of means. B) the estimated population variance is used directly. C) the difference score is divided by the sample's standard deviation. D) only the population's mean is used in the computation.