To learn about the interests and concerns of certain groups of people who may be your target market is called focus groups. The group of people can be between 9-15 in number and they will be the subject of targeted questioning to reveal information that may provide useful insights to inform product development or provide further direction for research efforts.
For example…
To gauge interest and gather key pain points of Diane’s Meditate by the Beach program, she sets up a focus group of ten people who range in age between thirty-five and fifty. She prepares several questions she will ask them to understand their stressors and favourite means of relaxation. Her intention is to use these answers to design her program targeted specifically at this age group.