This repository contains the data and analysis code for the study: Song, Z., Griesser, M., & van Schaik, C. P. (2025). Parental investment and body temperature explain encephalization in vertebrates. Proceedings of the National Academy of Sciences, 122(45), e2506145122.
Overview Code and data for Parental investment and body temperature explain encephalization in vertebrates. Using 2600 species across all major vertebrate classes, we test how newborn size and body temperature shape brain-size evolution. Results show synergistic effects, enabling large brains in warm, highly investing lineages.
Contents README.md Dataset: ParProv_Song_etal2025_Data_submit.xlsx R code for all analyses: ParProv_Song_etal2025_Code_submit.R R code for plot figures: ParProv_Song_etal2025_Plot_Code_submit.R Phylogenetic tree utilized in analyses: Vertebrate_Phylogenetic_Trees.zip