Random assignment is important in experimental research because ______.
a. it assures internal validity is maintained
b. it assures external validity is maintained
c. it is a snowball sampling technique
d. at root, it is the same as random selection
a. it assures internal validity is maintained
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Currently, economists estimate that the natural rate of unemployment in the United States is about
A) 10 percent. B) 5 percent. C) 0 percent. D) 2 percent.
Gottfredson and Hirschi claim that the principles of self-control theory ______.
A. predominantly explain violent crime B. predominantly explain property crime C. predominantly explain street crime D. can explain all varieties of criminal behavior
Which of the following is the standard of proof required to win a civil lawsuit?
A. Beyond a reasonable doubt B. A preponderance of the evidence C. A clear and convincing evidence D. All of these
Which is not an advantage of high-definition surveying?
A) ?Investigators can manipulate every piece of evidence. B) ?The perspective of the crime scene can be manipulated. C) ?Crime scene contamination is limited. D) ?It relies on photographic evidence and two-dimensional drawings. E) ?It eliminates the need for surveyors to access hazardous areas.