How often should roles be switched in pair programming?

In pair programming, switching roles frequently is essential for maintaining effective collaboration and engagement between partners. One partner typically takes on the role of the "driver," who writes the code, while the other assumes the role of the "observer" or "navigator," who reviews the work, thinks ahead, and provides suggestions. By frequently alternating these roles, both partners can share the cognitive load and gain exposure to different aspects of the coding process.

This practice not only helps to keep both partners actively involved but also fosters a deeper understanding of the code and the problem being solved, as each partner gets to experience both perspectives. Regular role switching encourages communication, enhances problem-solving skills, and can lead to more innovative solutions as partners share their thoughts and ideas more openly. Thus, often changing roles promotes a dynamic pair programming environment and maximizes the benefits of collaboration.