Longitudinal epidemiological studies that begin with people who are disease-free and are then followed for a period of years are called:

A) retrospective studies.
B) prospective studies.
C) correlational studies.
D) cross-sectional studies

Ans: B) prospective studies.

Psychology

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Which of the following best defines reaction range?

a. Genetically determined range of potential b. Environmentally determined range of potential c. Difference between nature and nurture d. Variation in the rate of pubertal development

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Languages that are comprised of both logographs and phonetic symbols, such as

Mandarin, affect the literacy patterns of native speakers in the following way: a. Chinese first graders are able to easily figure out vocabulary words they had not yet been taught. b. Chinese first graders learn to break down words into sounds. c. Chinese first graders are ableto read almost all the words they are taught, but very few of the words not yet taught. d. Literacy patterns of Chinese first graders are much like those of English-speaking first graders.

Psychology