I believe that a student’s mindset can be changed in both a positive and negative manner. A student with a fixed mindset within a subject may lack motivation and/or confidence. By promoting a positive learning environment and giving these students the opportunity to engage in active learning their mindset may be changed to a growth one. The link you provided demonstrated how a students with a growth mindset may “degrade” to a fixed mindset through reassuring praise. If we are you praise our students it should be because of their effort.
Changing a student’s mindset in a positive way is no easy task. But as instructors we have the tools to help aid this issue. Fischer (1999) suggests that self-directed learning can change a student’s mindset, specifically through authentic problems. He also mentions that people’s mindset can change through informal learning simply by being in the world. Here are some slides based on Fischer’s paper.
I believe that authentic problems that relate to a student’s career goals can improve their motivation to learn and their mindset. However, I am not convinced that appreciation can aid in changing a mindset from fixed to growth. Many adults do not need to be praised for their effort and although the intentions may be positive, it still may be interpreted as degrading.
Fischer, G: “Lifelong Learning: Changing Mindsets”, Proceedings of ICCE 99, 7th International Conference on Computers in Education on “New Human Abilities for the Networked Society”, November 4-7, 1999, Chiba, Japan. pp. 21 – 30.