PROCESS operates on both Windows and Mac versions of SPSS and SAS. PROCESS for SPSS requires SPSS version 19 or later but works best on versions 22 and above. PROCESS for SAS requires PROC IML. PROCESS for R was written in R base 3.6.1 and requires no additional packages. Downloading this software implies you have familiarized yourself with and understand the copyright notice and disclaimer below and will comply. This notice is available in the zip archive.