Balancing the Design With the Resources Available
We talk about what is doable with the time and resources available for
the study. Often, planning is a balancing act between what would be nice
to do and what is doable with the resources at hand. Resources include
the time available for the project, the financial resources available,
and the talent and creativity of people on the study team. If resources
are limited, fewer groups can be conducted. Usually, we are working with
not-for-profit groups in which financial resources are limited. In contrast,
just because resources are plentiful doesn't mean one should conduct more
groups. We have heard of organizations that have conducted sixty, seventy,
or eighty focus groups on one topic using the same questions. In our opinion,
that's a waste of time and money.
Seldom do we conduct more than thirty groups on a topic, even for national
studies.
Think about what is an appropriate amount of resources to spend on a project.
Try to fit the resources to the decision to be made. One can usually conduct
fewer groups when there is little risk to making the decision (i.e., the
decision is easily reversible, people won't be seriously affected by the
change, it doesn't involve big expenditures). If the decision involves
a great deal of risk, one would increase the number of focus groups and
consider enhancing the study with quantitative data.
Often, we decide how many groups can be conducted with the resources available
and then decide how we should configure the groups. If we have the resources
to conduct ten groups, how many different types of participants (or target
audiences) should we listen to? How many groups should we conduct with
each type of participant? What configuration will give us the most useful
information?
Here is an example. In the study designed to find out how to get kids
to eat more fruits and vegetables while at school, there were enough resources
to conduct twelve groups at the pilot elementary school. The planners
decided it was most important to listen to the kids because they had the
most information about what it would take to get them to eat more fruits
and vegetables. They decided to conduct three groups with second graders
and three groups with fourth graders. They also knew that input from food
service workers was crucial to making changes. There was only a handful
of food service workers in the school, so they could all participate in
one group. The planners also wanted to hear from teachers and parents.
They decided to conduct two groups with teachers and three groups with
parents.
Expect to struggle with the design a bit. It takes time to figure out
how to configure the groups.
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