Järvinen, K., Laukkanen, A., Kähkönen, A., Nieminen, P., Mäntylä, T. (2025). Investigating the moments of “aha” and “hmm” through acoustic analysis of voice and speech in pre-service physics teacher education–A novel method for identifying significant learning moments. PLoS ONE. https://doi.org/10.1371/journal.pone.0314344