[By the way, the cover image is of the proportion of children in different countries who have a growth mindset (darker red is more). The data was taken from PISA 2019 and I constructed the image using Python. Grey countries are those for which I didn't have data.] I was initially a huge supporter and admirer of Carol Dweck's work on fixed vs. growth mindset. The very first episode of the podcast was about her book, and I mentioned it many times afterwards, talking about how amazing it was. Then a couple of years ago I lost confidence. Angry about being misled by advocates of constructivist, project-based, or discovery learning, and pessimistic about psychology as a whole with my recent discovery of the degree to which studies would have completely different results depending on cultural sample, I heard that Dweck's work was having trouble replicating. In episode 100, I spoke about my concerns with mindset, which was particularly bitter since I'd once been such a strong advocate of it.
