During the Sprint Retrospective, the newest developer says that his perspective and ideas have been...

The Scrum values of courage, openness, and respect are touched in this situation. Courage means that the Scrum Team members have the courage to do the right thing and work on tough problems, and also to speak up when they have concerns or disagreements. Openness means that the Scrum Team members and stakeholders agree to be open about all the work and the challenges with performing the work. Respect means that the Scrum Team members respect each other to be capable, independent people, and also respect the opinions and ideas of others.

In this case, the newest developer showed courage by expressing his feelings during the Sprint Retrospective, which is an opportunity for the Scrum Team to inspect itself and create a plan for improvements. The rest of the Developers should have been more open to listening to his perspective and ideas throughout the Sprint, as they might have valuable insights or suggestions for improving the product or the process. The Developers should also have respected the newest developer as a member of the team, and given him a fair chance to contribute and collaborate with them.

References:

The Scrum Guide, November 2020, p. 13-14

What are the 5 Scrum Values?, Visual Paradigm, accessed on September 30, 2023

Scrum Values Poster, Scrum.org, accessed on September 30, 2023