In which of the following ways did Paul( 1966 ) separate the improvement due to
spontaneous remission, to the placebo effect, and to the therapy itself?
A) He used a single independent variable
B) He used a single type of therapy
C) He used two control groups
D) He used three control groups
C
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Professor Aguayo is recruiting subjects for a study. She is advised not to give potential subjects the exact title of the study, which is "The negative effects of mild anxiety on eye-hand coordination." Why not share the title with potential subjects?
A. Professor Aguayo may change the hypothesis after the data are collected and analyzed. B. The title may create specific expectations that could bias the subjects. C. It's really none of the subjects' business, since Professor Aguayo is the researcher. D. She's not really sure if mild anxiety will affect eye-hand coordination.
A z-score is a value that represents the distance of a score from the population mean in terms of what?
What will be an ideal response?
In a positive relationship, _________
a. b is negative c. a must be positive b. b is positive d. a must be negative
It is not possible to analyze the probability of the alternative hypothesis because the laws of probability are derived for chance events. This is why we test H0 instead of H1
Indicate whether the statement is true or false