In what ways do teratogens influence prenatal development?
a. Teratogens promote healthy prenatal immune system development.
b. Teratogens may cause miscarriages and birth defects.
c. Teratogens influence nutrition and increase the weight of the fetus.
d. Teratogens may block nutrients in the placenta and inhibit prenatal growth.
B
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Synonyms for what is known as the Internet include all of the following except
(a) Net (b) cyberspace (c) World Wide Web (d) Information Superhighway
A negative correlation is a. as good for prediction as a positive correlation. b. indicative of no relationship between the variables underinvestigation
c. obtained when the distribution of measures on the two variables arenot linear. d. none of the above.
. A researcher selects a sample of size 6 from a population of size 10. How many possible samples of this size can be selected using theoretical sampling?
A. 100,000 B. 1,000,000 C. 10,000,000 D. over 60,000,000 samples
A screening instrument’s ability to accurately rule out a child who should not be referred for further assessment refers to the instrument's ______.
A. specificity B. sensitivity C. generalizability D. predictability