This paper studies a metacognitive intervention to develop both critical thinking and metacognition skills. Their data “have shown that this relation is bidirectional, so that metacognition improves thinking skills and vice versa.” (P 10)

Rivas, S., Saiz, C., & Ossa, C. (2022). Metacognitive Strategies and Development of Critical Thinking in Higher Education. Frontiers in Psychology. Vol 13 (article 913219). https://doi.org/10.3389/fpsyg.2022.913219