Schultheiss_et_al_2D_4D.zip contains the original source data files, the SYSTAT 13 processing & analysis script, and the combined SYSTAT and SPSS data files on which all analyses were based (if you want to skip the processing and file aggregation steps). The names of the analysis files are Schultheiss_et_al.syz (SYSTAT) and Schultheiss_et_al.sav (SPSS). Within the ZIP file, they are in the \data f...