## Purpose of this repository This is a record of analyses to test for gender differences in test scores from the [2015 Programme for International Student Assessment](http://www.oecd.org/pisa/). For details of methods please see the Supplementary Information (SI) of our manuscript "[Gender differences in individual variation in academic grades fail to fit expected patterns for STEM](http://dx.doi.org/10.1038/s41467-018-06292-0)". ## Guide to files in OSF storage ### R Files - "1. PISA Data Extract and Clean.Rmd" - takes raw data from the file path ./Data/Raw/, and extracts sample sizes, means, and standard deviations for test scores across jurisdictions, split by gender. Effect sizes are then calculated, and the processed data is saved. - "2. PISA Analysis.Rmd" - takes processed data from the file path ./Data/Processed/, and runs meta-analytic models. All models are saved in the folder "Models" - "3. PISA Results Table.Rmd" - extracts model estimates and saves them in the format of the supplementary results table, imported from the excel file "Supplementary Table 15.xlsx" - "4. PISA Figure.Rmd" - creates figure panels A, B, and C from model estimates, and saves these figures as PDFs in the "Figure" folder. - "5. PISA Methods and Results.Rmd" - knits the word document of methods and results text that appears in the SI - "functions.R" - functions for calculating the effect sizes and covariance matrices that are required for running models ### Sub-folders #### Data - Contains raw data (excel files downloaded directly from PISA), and processed data exported from "1. PISA Data Extract and Clean.Rmd" #### Figure - Files to produce Supplementary Figure 12. Contains PDFs of individual panels (A, B, and C), as well as .pptx files for labeling and combining these panels #### Models - Saved .Rdata files of the meta-analytic models which are used to create the results table, text, and figures