Some research has found that several different species of fish—salmon, bluefin or albacore tuna, and swordfish—contain high levels of an omega-3 fatty acid called ________. This substance may help memory cells in the brain communicate with each other more effectively.
A. DHA
B. EDTA
C. ghrelin
D. leptin
Ans: A. DHA
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A very controversial topic in many countries is that of one's "right to die" and one's right to have a physician assist them in committing suicide. Proponents of physician-assisted suicide might say, "We each have the right to decide for ourselves when we want to die, and if a physician can make that process less painful then we should have that privilege.". This sort of thinking might best
reflect the ____ level of morality in Kohlberg's theory of moral reasoning. a. postconventional b. conventional c. postformal d. social contract
Depressed people tend to attribute their negative experiences to causes that are:
A) external. B) global. C) unstable. D) temporary.
When using the forced-choice procedure in measuring odor detection thresholds, the experimenter should _____
A) ?do two trials simultaneously B) ?separate trials by at least 500 msec C) ?separate trials by at least 5 seconds D) ?separate trials by at least 30 seconds
If you check your phone to see if you have text messages, you sometimes have one. You can't make text messages come faster by checking more frequently! Which of the following schedules of reinforcement fits this example?
a. fixed ratio b. fixed interval c. variable interval d. variable ratio