Which of the following is true of correlational studies?
A. They express the degree of relationship between two variables.
B. They use a measure called a correlation coefficient that can vary from 0% to 100%.
C. They should never be used in studies that investigate heredity.
D. They are the best way to determine causes of behavior.
Answer: A
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A psychologist who is asking abstract and hypothetical questions might be trying to determine whether a child is in which stage of cognitive development?
a. Preoperational b. Concrete operations c. Sensorimotor d. Formal operations
What happens to bones with age?
They become more porous. They gain strength. They gain calcium. They become less porous.
After participating in an experiment on the effects of alcohol on sociability, Megan could not wait to return to her sorority house to tell all of her sisters about it. In this situation, the researcher should be concerned with the confound of:
a. mortality. b. regression to the mean. c. testing. d. diffusion of treatment.
Which of the following is not a constructivist method of teaching?
a. discovery learning b. cooperative learning c. direct teaching d. active participation