Dr. Smith is designing a study in which 50 people will be administered an experimental drug and 50 people will be administered a placebo. He will make sure that all potential respondents are equally likely to end up in either the experimental or control group. What is this practice called?
A. selective assignment
B. random assignment
C. determined assignment
D. confounding assignment
Answer: B
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What will be an ideal response?
In research described by your authors, participants were asked to complete a specific task. In some cases, they were told that they would complete this task again after some sleep. In other cases they were not told, but allowed to sleep
In still a third group, they were not warned about taking the test again and were not given a chance to sleep. What was the task that these research participants completed? a. the Stroop color test b. learning word pairs c. remembering lists of numbers d. identifying pictures of movie stars and other famous persons
As suggested by the facial feedback hypothesis, our emotions are most likely to be affected by
A) external stimuli. B) the facial blood vessels. C) our bodily movement. D) the face shape.
In mainstream America, the norm of reciprocity is common
Indicate whether the statement is true or false.