Electronic Supplementary Material Readme file for Powell, L.E. Barton, R.A. & Street, S.E. (2019), “Maternal investment, life histories, and the evolution of brain structure in primates”, Proceedings of the Royal Society B: Biological Sciences, doi: 10.1098/rspb.2019.1608 

ESM file names and descriptions are provided below:

- anage_data.txt (life history data obtained from the AnAge database: http://genomics.senescence.info/species/)

- Barton_Venditti_2014.txt (brain volume data from Barton & Venditti 2014, including additional data for strepsirrhines not included in the paper’s SI tables)

- consensusTree_10kTrees_Primates_Version3.nex.txt (consensus primate phylogeny used in the analyses, obtained from https://10ktrees.nunn-lab.org/Primates/downloadTrees.php)

- ESM_Appendix.PDF (appendix containing results of additional analyses investigating potential artefactual causes of low lambda values)

- ESM_tables.docx (model comparison tables for brain, neocortex and cerebellum volume analyses)

- Pantheria_data.txt (comparative data obtained from the PanTHERIA database: http://esapubs.org/archive/ecol/E090/184/)

- Powell_etal_2019_data_analysis_script.txt (R code used for all analyses included in the paper)

- Powell_etal_2019_data_for_analysis.txt (data file used for all analyses included in the paper, containing the columns listed below). 
	- Species (binomial names)
	- Brain (whole brain volume in mm^3)
	- Neocortex (neocortex volume in mm^3)
	- Cerebellum (cerebellum volume in mm^3)
	- Body (body mass in grams)
	- Gestation (gestation period length in days)
	- Weaning (weaning age in days)
	- Age_first_birth (age of first reproduction in days)
	- Lifespan (maximum longevity in months)
	- Juvenile_period (juvenile period length estimated as age at first birth minus weaning age, in days)
	- Adult_lifespan (adult lifespan estimated as lifespan minus age at first birth, in days)
	- Ape (factor indicating membership of ape clade)

- Powell_etal_2019_data_preparation_script.txt (R code used to prepare the data for analyses)

- Resolved_species.txt (Text file containing a list of species with taxonomic mis-matches and details of their resolution)