Why have many psychologists begun to worry that some of the published results may not be replicable?
What will be an ideal response?
Throughout the world, many psychological researchers are conducting studies. Overall, a huge number are conducted. Random fluctuations in the data will occasionally produce an unlikely event, with p < 0.05 . Researchers attempt to publish any result that appears to be statistically significant, and therefore some of the published results (including some that seem very interesting) may be accidents, or may represent a finding that occurs only under limited circumstances.
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Infants who cry easily are likely to grow up to have much anxiety in adulthood. That statement must be based on which kind of study?
a. Longitudinal b. Cross-sectional c. Single-blind d. Double-blind
In the hypothesis, "People feel more depressed in the winter," ____ is the independent variable and ____ is the dependent variable
a. season of the year; depression b. depression; season of the year c. depression; winter d. people; depression
To select a random sample, what could a researcher do?
a. Take every nth person from a list of everyone in the population. b. Use cluster sampling to ensure the sample is representative. c. Use a table of random numbers. d. Ask respondents who wish to be in the sample to volunteer.
When a depressed person has feelings or thoughts of worthlessness, he or she should
a. ignore them and go back to studying. b. write them down and then write a rational answer to each one. c. repeat the thoughts over and over until they lose their meaning. d. try to get more sleep by taking an afternoon nap.