The following resource provides the instructions and code for directly harmonizing various neuropsychological test batteries. The statistical code is provided for the harmonization. It is important to note that many of the specific statistical tests utilized are proprietary, and must be purchased directly from the licensors, such as PAR, Inc. While we provide the harmonization methodology and code without charge, the user is responsible for observing all copyright and licensing requirements for the cognitive tests themselves.
Link to the harmonization code: https://github.com/dougtommet/gcp-harmonization