What should usability testing be conducted under?

Usability testing should be conducted under controlled conditions to ensure that the results are reliable and can be accurately analyzed. Controlled conditions allow for the standardization of the testing environment, meaning that variables can be manipulated deliberately while others are kept constant. This level of control helps researchers to identify specific issues within the product or material being tested without the interference of external factors, thus yielding clear insights into user interactions.

Conducting usability tests in controlled conditions enables testers to create scenarios that simulate real-world use while managing the environment and context in which the testing takes place. This structure allows for the collection of meaningful data regarding user behavior, satisfaction, and ease of use, which are essential for evaluating the effectiveness of the product or service.

Other settings like spontaneous settings, open environments, or market conditions introduce uncontrolled variables that can lead to inconsistent results. These less regulated environments can complicate data analysis and undermine the conclusions drawn from user feedback, making controlled conditions the preferred approach for usability testing.