One important advantage of using effect sizes is that
A) they indicate all the relevant parameters of a group of scores.
B) they directly indicate the statistical significance of the research hypothesis.
C) they provide the same information as statistical significance, but they permit meta-studies.
D) they are standardized scores that make comparisons of different studies easier.
D
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Widowed women usually experience a decline in their economic well-being after the death of their husband.
Answer the following statement true (T) or false (F)
A baby born between the seventh and eighth months of pregnancy __________
A) is just as healthy as a full-term baby B) usually needs oxygen assistance to breathe C) only has about a 10 percent survival rate D) is considered small-for-date
Wilhelm scores above average on extraversion and agreeableness. His identical twin Matteus, who was raised by a different family, has about a __________ chance of also scoring high on those same two traits.
A. 5% B. 20% C. 50% D. 67%
What is an advantage of the experimental method?
A. Researchers can measure the effect of the experimental manipulation. B. There are no confounding variables. C. Participants will always tell the truth. D. Experimental research will always be funded.