Identifying Information-Rich Participants
Another part of planning is figuring out what types of people could give
you the information you want. Who are the target audiences? At this point,
we aren't thinking of names of individuals; we are thinking of what characteristics
the people should have. For example, suppose an educational institution
is interested in how customers perceive current programs. On the surface,
this appears straightforward; just talk to students. But it may be more
complex. Are decision makers interested in current students, students
who have tried the programs and left, potential students, or businesses
that hire their students? Are the perceptions of students .with certain
demographic characteristics more critical than others for this study?
A precise definition of the customers is essential to get the needed information.
It sometimes helps to think of this as identifying the "information-rich"
cases. Patton (1990) describes these information-rich cases as "those
from which one can learn a great deal about the issues of central importance
to the purpose of the research" (p. 169). The question the researcher
asks is, "Who has the greatest amount of insight on this topic?"
In the example above, potential customers-perhaps people who requested
information but never actually participated in the program-may not know
many specifics about the program. However, they would be rich with information
about their perceptions of the program, what keeps them from participating,
or what might get them to participate.
In some studies, several different types of people can give you information
from different perspectives. For example, a public health agency and a
school were working together to figure out what it would take to get elementary
schoolchildren to eat more fruits and vegetables while at school. They
conducted focus groups with parents, teachers, food service workers, and
second- and fourth-grade students. Each type of participant was able to
give a different view of the problem and potential solutions.
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