If a fixed mindset is partly built on the belief that intelligence is a static trait, then directly teaching students the actual neuroscience of how the brain physically changes and strengthens through effort and practice should, in principle, shift that belief — and controlled research on exactly this intervention found it does, with measurable downstream effects on real academic behavior, not just self-reported attitude.
The intervention's real value is that it targets the belief itself rather than just the behavior — teaching a specific study technique helps with that technique, but changing the underlying belief about whether effort can actually build ability tends to generalize across many different situations a student encounters afterward.