Your empirical research project calls for a research proposal, which will include specific methodology of how you would gather data.
How would you know what to use to test your hypothesis?
Using tests and measures already created can give you a place to get started. Many can be reused for educational and research purposes.
Use these databases to find information about a test or measure, such as reliability, validity, how it has been used, and occasionally the instrument itself.
Watch the tutorial below for an example of searching for tests and measures in PsycINFO (4:06)