Supplementing Interaction: When no Follow-up is Needed
(2 of 2)
Next section: Simple effects
No additional statistical tests would be needed to justify this conclusion.
Some researchers feel that the finding of a significant interaction requires
one to do supplemental analyses. No supplemental analyses are required if
the researcher wishes simply to conclude that the effect of one variable
differs depending on the level of another variable since that is exactly
what the interaction is testing.
Next section: Simple effects