If a researcher finds a negative correlation between the number of hours that students play computer games and grades, this means that
a. computer game playing causes a decrease in grades.
b. computer game playing causes an increase in grades.
c. lower grades cause a student to be disinterested in studying and more interested in playing computer games.
d. an experiment would have to be performed to establish a cause-and-effect relationship between video game playing and grades.
d
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Which of the following is NOT true about leisure time?
a. One should choose leisure activities that refresh and renew. b. Watching TV is a good use of leisure time because you can turn off your mind. c. Leisure time should not be packed with so many activities that it becomes stressful. d. Leisure time should be used for more than completing necessary chores such as cleaning and doing laundry.
If there are any risks to the safety and welfare of participants that the research does not justify, then preferences is always given to the
A) investigator. B) research committee. C) research participants. D) institutional review board.