The brain floats in CSF so that
A. it is cushioned to protect it from impact or sudden changes in movement.
B. it can efficiently eliminate wastes from the brain into the CSF drainage.
C. it can receive oxygen and glucose from the CSF bathing it.
D. to both eliminate wastes and take in oxygen and glucose.
Answer: A
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Evidence for interindividual variability in intelligence is best demonstrated when a. a single test of intelligence is based on assessing many different abilities
b. the same individual shows improvement in language skills while showing declines in math skills. c. an individual's singing improves after taking singing lessons. d. one individual's reasoning skills improve with age while another's declines with age.
If a diagnosis of a psychological disorder is valid, then we should be able to predict the course of the disorder. This is called
a. predictive reliability. c. truth in diagnosis. b. predictive validity. d. none of these.
When Tyrone broke his leg and needed to use crutches to get around, his brother Tyrelle offered to carry his book bag for him in school. Tyrelle did not ask Tyrone for anything in return, especially since he knew that Tyrone was upset that he would miss the next few weeks of baseball. Tyrelle's behavior exemplifies
a. empathy. c. moralism. b. altruism. d. hedonism.
Answer the following statement(s) true (T) or false (F)
Researchers are suspicious of face validity because it is often based on only one person’s view.