What must happen after a study in which the participants were misled about the nature of the research?
a. Subjects must be assigned to experimental groups.
b. A debriefing must take place.
c. A placebo must be used.
d. An assessment of risk/gain must be made.
e. The confounds must be discussed with the participants.
b. A debriefing must take place.
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Several students want to determine if relaxation exercises reduce levels of test anxiety. To answer their question, they ask a group of students if they relax before taking a test. They find many students who relax say they have low levels of anxiety
What conclusion is justified from the results of their survey? a) Relaxation should be used by students before they take exams. b) The absence of a control group makes the findings difficult to interpret. c) There seems to be a positive correlation between relaxing and grade point average. d) Students who report being relaxed were probably just saying that because they were afraid.
Which of the following describes the term decibels?
a) The sound pressure of a source according to its amplitude. b) The frequencies of sound waves to which animals can perceive. c) Corresponding to the amplitude of the wound wave. d) The sound pressure of a source when compared to a standard intensity of watts.