If the time between the pretest and the posttest is very short, then

Vince wants to draw a sample of people in Illinois who own 1960s Schwinn Sting-Ray children’s bicycles, a collector’s item. There is no list of the people, but there is an informal network (acquaintances) of Sting-Ray owners. What type of sampling should Vince use?

A researcher needs all of the following to make a casual statement, EXCEPT

What is a range of values, usually a little higher and lower than a specific value found in a sample, within which a researcher has a specified and high degree of confidence that the population parameter lies?

A positive relationship is when

In a qualitative study, most of one’s measurement decisions happen:

In 1957, President Gorz posed for an official photograph in front of the presidential palace, which was the only photograph ever taken of him. Before the picture was taken, he had the barbed wire on the roof of the palace removed. He also took off the gun he always wore. He wanted to hide the militaristic and brutal nature of his rule. This illustrates

Which of the following propositions has the greatest theoretical scope?

A comparative-historical researcher can encounter each of the following ethical issues, EXCEPT which one?

Dr. Gulley uses the attitude of strangeness when interacting with or interviewing day care employees. This means that she