Field tests are practical experiments conducted in real-world settings to evaluate the performance of a product, service, or method. These tests help researchers and developers gather data on how well something works outside of controlled environments, providing insights into its effectiveness and usability. During a field test, participants use the item or service in their everyday lives, allowing for the collection of feedback and observations. This process can involve various subjects, such as new technology, educational programs, or agricultural practices, and is essential for making improvements before a full-scale launch.