Experimenting in Psychology

Thursday, May 14, 2009
Posted by: Ms. Shea in In Class


A little exercise can help older people sleep better, according to a pair of studies. 

One study, led by researchers at Stanford University, involved 43 sedentary healthy adults age 50-76 years old with mild sleep problems, such as taking longer than 25 minutes on average to fall asleep and sleeping an average of only 6 hours a night. 

Half of the participants underwent 16 weeks of aerobics, each week consisting of 2 hour-long low impact classes at the YMCA and 2 forty-minute session of brisk walking or stationary cycling at home. The other half did nothing. 

At the end of the study, the subjects who exercised reported that they fell asleep about 15 minutes faster and slept about 45 minutes longer than before. Those who did not exercise showed little or no improvement. 

  1. What do the researchers expect to prove? (HYPOTHESIS)
  2. In this experiment, which group gets to exercise (EXPERIMENTAL GROUP)
  3. What did the other group involved in the study do? (CONTROL GROUP)
  4. What was the difference between the two groups? (INDEPENDENT VARIABLE)
  5. As a result of exercise, what did the researchers hope would happen? (DEPENDENT VARIABLE)
  6. What did the researchers find out? (CONCLUSION)

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