Researchers have found it difficult to decipher the effects of individual drugs on prenatal
development. Women may use more than one drug, have poor nutritional habits and lack good
prenatal care.
In additional, there are ethical constraints on the types of research that can be
conducted. Therefore, information on the effects of drugs on prenatal development is
a. experimental.
b. critical.
c. hypothetical.
d. correlational.
d. correlational.
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The female growth spurt during adolescence is stopped by
a. testosterone. b. estrogen. c. the onset of menstruation. d. completion of breast development.
Dr. Lau is doing an experiment in which he wishes to determine the lowest concentration of salt that customers will be able to taste in a new soup product. In this experiment, Dr. Lau is interested in measuring the customer’s ____
a. ?top-down perceptual processing b. ?difference threshold c. ?absolute threshold for taste d. ?just noticeable difference for salt