Interaction of the Causal Relationship with Units
An effect found with certain kinds of units might not hold if other kinds of units had been studied.
Interaction of the Causal Relationship Over Treatment Variations
An effect found with one treatment variation might not hold with other variations of that treatment, or when that treatment is combined with other treatments, or when only part of that treatment is used.
Interaction of the Causal Relationship with Outcomes
An effect found on one kind of outcome observation may not hold if other outcome observations were used.
Interactions of the Causal Relationship with Settings
An effect found in one kind of setting may not hold if other kinds of settings were used.
An explanatory mediator of a causal relationship in CONTEXT may not mediate in another context.