A double-blind experiment would be used for all of the following EXCEPT to
a. minimize researcher bias.
b. minimize changes in subjects' behavior caused by the unintended influence of an experimenter's actions
c. control for research participant bias.
d. eliminate the need for randomly assigning participants to experimental and control groups.
D
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Michelle and Deana are arguing about the relative benefits of breastfeeding and bottle feeding. Which of their arguments is most valid?
a. Michelle's claim that breastfed babies are ill less often because breast milk has the mother's antibodies in it. b. Deana's assertion that bottlefed babies are less likely to have diarrhea and constipation. c. Michelle's argument that breastfed babies' psychological development is enhanced. d. Deana's belief that bottlefed babies make the transition to solid foods more easily.
In the last weeks of pregnancy,
A) the fetus usually loses a pound or two. B) most fetuses assume an upside-down position. C) fetal growth increases dramatically. D) the fetus begins relying on its own well-developed immune system.