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CLEP Intro to Educational Psychology Exam Prep

Category - CLEP Intro Educational Psychology

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Dr. Ripley is testing a new drug to treat depression. She predicts “Drug X will not improve depressive symptoms in adults who take it for 12 weeks, compared to adults who do not take drug X.” What is Dr. Ripley’s prediction called?
  1. Null hypothesis
  2. Random selection
  3. Population hypothesis
  4. Research hypothesis
Explanation
Answer: A - The null hypothesis predicts that there will be no difference between populations during the course of a research study. The null hypothesis is the opposite of the research hypothesis, which predicts change. The results of a study can only support the null hypothesis or the research hypothesis. Both hypotheses cannot be correct. Once a study has been completed, Dr. Ripley will know whether or not the null hypothesis is correct.
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