In a hybrid design, either cross-sectional or longitudinal data is collected from two different samples of children obtained at different times. Among other things, this type of design enables researchers to test for _________________
a. cohort effects
b. age effects
c. intervention effects
d. whether cross-sectional designs are better than longitudinal designs
Answer: A
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a) Because hypertension is a risk factor for suicide. b) Because it can kill people despite their awareness of being hypertensive. c) Because people may go for years without knowing they have hypertension. d) Because people often cannot scream when they are having a fatal hypertensive attack
A researcher selects a sample and administers a treatment to the individuals in the sample. If the sample is used for a hypothesis test, what does the alternative hypothesis (H1) say about the treatment?
a. The treatment causes a change in the scores. b. The treatment adds a constant to each score. c. The treatment multiplies each score by a constant. d. The treatment has no effect on the scores.