Answer the following statement(s) true (T) or false (F)
For qualitative interviewing, respondents are typically selected using random selection.
Ans: F
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The Model Rules have replaced the Model Code as a guide for ethics.
Answer the following statement true (T) or false (F)
After doing a large-scale cross-sectional study, a researcher finds that each successively older group does slightly less well on a test of memory for 10-digit telephone numbers. Which of the following is the best interpretation of this result?
a. A basic biological change underlies the observed steady reduction of memory skill. b. The differences can be explained by gender of the participants. c. The difference has nothing to do with practice of memory skills. d. No interpretation can be made using this result.
Early in their lives, four out of five American infants have frequent episodes of crying that last for 15 or more minutes ____
a. because of separation anxiety b. for no apparent cause. c. as a function of frustration for lack of parental attention. d. because their environment is not warm enough.
Billy is a four-year-old boy. He has trouble walking and running like other children his age, and he sleeps through most of the day. He is diagnosed with multiple sclerosis. Billy's condition is the result of _____
A) the abnormal lengths of the axons B) a disruption in his myelin sheaths C) the presence of an extra copy of chromosome 21 D) a disruption in his rapid eye movement sleep