Given that the mean is 500 and the standard deviation is 100 on one section of the SAT, what is the approximate probability of a student scoring 400 or higher on the test?
a. .84
b. .50
c. .16
d. .34
a
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Which of the following individuals has the greatest risk of developing Alzheimer's disease dementia?
a. Paul, who is wealthy and well educated b. Rena, who completed college, though she has an average IQ c. Jason, who is extremely bright but never finished college d. Carrie, who dropped out of school when she was very young
Behavior that is reinforced every time it occurs is said to be on a(n) ________ reinforcement schedule.
A. positive B. intermittent C. continuous D. secondary
Increasing the number of _______ in a study is one of the best ways to increase the chances of detecting a real effect
A) participants B) dependent variables C) controls D) manipulations
What are the most reliable and universally recognized indicators that observers use to determine which emotion an individual is experiencing?
a) words b) body postures c) voice inflections d) facial expressions