Correct

Correct, although it may seem wrong at first glance.
Correlation research seeks the strength and direction
of relationships among variables within a single group
of participants. Differential research seeks to determine
if two or more groups differ. But this question is not about
the goals of the research but, rather, it is about the issues in
interpretation of the findings. When we find a significant
difference between groups in an experimental study, given
proper controls, we can infer the presence of a causal relationship.
But when we find a significant difference among groups in a
differential study, we cannot conclude causality. We can conclude
only that the groups differ and that some unknown factor or factors
associated with one or more of the groups may have some effect on
the dependent variable. But we do not know what the factors are. In
essence the interpretation is somewhat like that of a correlation; there
is a relationship but we do not know if it is causal.. Do you understand
why this limitation exists in differential research?