The high _____ of a myelin sheath insulates a neuron from electrically charged atoms in the fluids that encase the nervous system.
A. fat content
B. protein content
C. carbohydrate content
D. fiber content
Answer: A
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Suppose that some adults with ADHD and some adults without ADHD are asked to judge their performance on a memory test, on an item-by-item basis. How accurate would these judgments be if everyone provided those judgments after several intervening items?
a. Both groups would be highly accurate. b. For the most difficult items, the adults without ADHD would be much more accurate than the adults with ADHD. c. For the easiest items, the adults without ADHD would be much more accurate than the adults with ADHD. d. Both groups would be highly inaccurate.
A loose screw on the visor causes it to drop down while Ben
drives; however, he keeps forgetting to take a screwdriver out to the car to fix it. When he notices the visor drop again, he reaches into his pocket for a dime, which he uses to tighten the screw holding the visor. What problem-solving difficulty did Ben overcome? A) Relative comparison B) Functional fixedness C) Poor problem representation D) The representative heuristic
A child can nod its head before it can snap its fingers due to the influence of ________.
A. genetics B. cortisol C. androgens D. myelin
Since 1915 the maternal mortality rate has dropped from nearly 608 deaths per 100,000 live births to approximately ________ deaths per 100,000 live births in 2003.
A. 42 B. 28 C. 6 D. 12