Posts Tagged ‘Research’

When you’re doing things like needs assessments and other types of trianing research, the question is how many should you do?  Or is there a number that makes the research valid?

There are really two key considerations.  First, you want to include enough people to make sure you involve the key stakeholders.  You don’t want to leave anyone out who has the ability to sabotage your work.  In this case, more is better.

Second, you will find that after you’ve done a number of interviews that you start to get the same answers over and over again.  At that point, you have enough to make the study valid.  You’ve basically covered the range of responses.

Remember that interviews are different than surveys.  You’re looking for more indepth answers and a complete range of responses.  Usually at around 25 to 30 interviews, you should have what you need.

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