If you are a product manager in this day and age, you are likely to consider guerrilla usability testing as a powerful technique for testing your concept effectively and within a short time frame. It is a quick and inexpensive way of testing a prototype or website with real users.
Then you can tell them about the testing purpose, using your prepared introduction and product description. You have to be concise — your time is strictly limited.
During the testing be armed with questions you will be asking your potential or actual users.
Always start with open-ended, non-leading questions, e.g.:
What do you make of this? What would you do on this screen? How would you do that?
These kinds of questions will encourage participants to tell a loose story about their product perception.
Be consistent with your questions, but remember, that guerrilla usability testing is very much about adapting to the situation. A detailed plan will guide you, but it will not fully protect you from any unpredictable situations. The lack of a controlled environment is one of the most significant differences between a guerrilla testing and a regular user testing.
Therefore, keep in mind some tips below — they will make you feel safer:
Have a backup internet in case of a weak internet connection. Besides, take additional charger cables and additional power packs with you.
Be ready to throw out some questions, if a participant decides to leave the testing session earlier.
If it is too loud, focus on the tasks that require less verbal communication.
Minimize note-taking using video or audio recording devices (of course, only with the interviewee’s permission).
In the end, don’t forget to thank users for their time.
After the testing
After the testing session, process the gathered data and feedback — convert them into improvements or/and requirements for your product. Keep in mind that this technique should be considered only a part of your overall usability testing strategy, but it might significantly help in future product development and bug fixing. To achieve great results, combine the results of a guerrilla testing with other research techniques. Make testing a habit!