Making the case for hypothesis-driven theory testing in the study of Internet Gaming Disorder

- Atheoretical and confirmatory research practices threaten construct validity of tests for IGD.
- We do not know which criteria that capture substance use disorder are relevant in the context of IGD.
- Tests need to be validated through an iterative process of hypothesis-driven theory testing.
- Test items need to be derived from a broader pool of items that include multiple theories of IGD.